Search Results

Search found 4882 results on 196 pages for 'odd behaviour'.

Page 186/196 | < Previous Page | 182 183 184 185 186 187 188 189 190 191 192 193  | Next Page >

• Sporadic disk clicking sound

  - by Abdó

  Hi, I'm having some unusual and sporadic hard disk clicking issues. Here is a cronological description of the facts. I'm using an ASUS P6T-SE with Intel Core i7, 6Gb RAM 600W Power supply and ATI4670 graphics, running Ubuntu 10.10. About one month ago my hard disk (SATA II Seagate Barracuda 1Tb 7200 rpm) started making a clicking sound: a sort of loud tic-tac, every second or so, when involved in disk activity. The system was clearly slower than before at disk access, but it was functional and I could not find any signal of trouble on the linux logs. I disconnected the disk and tried an older SATA drive I had around: no problem with it. Then I reconnected the Seagate disk, and the problem was mysteriously gone. Ubuntu booted normally, usual speed, no clicking. A couple of weeks later, the problem reappeared. I tried disconnecting reconnecting (as it somehow solved the problem before) without luck. So, despite it was a rather new drive, I assumed it was a hardware issue, made backups and bought a new drive. The new drive is a SATA II Seagate Barracuda 1.5 Tb 7200 rpm. I installed both drives at the same time, with the intention of transferring my files from on to the other. To my surprise, when I booted the computer with both drives, both started making the clicking sound !! Even worse, I removed the old drive, leaving the unformated new drive connected, and booted from a LiveCD. It kept clicking ! Puzzled by this, I tried both drives on my laptop with a SATA to USB cable. At the moment I connected any of them, they made one or two unusual clicks and immediately stopped doing that and worked normally. The old drive I thought almost dead, was working like a charm as if nothing happened. Then I thought: "ok, it must be the motherboard. Let's try again". So, I reconnected the old drive to the ASUS P6T motherboard (the same cables and SATA port as before), and it worked as if nothing happened ! The problem was gone again. The new 1.5 Tb drive was also working ok: No clicking nor slowdown. So I left the old 1Tb disk connected and kept using the computer daily during 3 weeks, until today it happened again. Now I don't really know what to do or check. I'm not even sure if it is a hardware issue any more ! This is rather annoying as it seems it happens with a period of 2 or 3 weeks and I have no means of forcing it to happen. Does anyone have a clue of what can causes this behaviour or have any suggestions of things I should check when it happens again ? What I did today is checking some SMART parameters Error log: smartctl -l error /dev/sda. No errors Short selftest: smartctl -t short /dev/sda. No errors Disk Health check: smartctl -H /dev/sda. passed And here are the vendor specific parameters (smartctl -A /dev/sda) Which I'm not quite sure how to interpret. === START OF READ SMART DATA SECTION === SMART Attributes Data Structure revision number: 10 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 120 099 006 Pre-fail Always - 235962588 3 Spin_Up_Time 0x0003 095 095 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 187 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 072 060 030 Pre-fail Always - 16348045 9 Power_On_Hours 0x0032 096 096 000 Old_age Always - 3590 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 94 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 097 000 Old_age Always - 4295164029 189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0022 070 057 045 Old_age Always - 30 (Lifetime Min/Max 19/31) 194 Temperature_Celsius 0x0022 030 043 000 Old_age Always - 30 (0 18 0 0) 195 Hardware_ECC_Recovered 0x001a 037 026 000 Old_age Always - 235962588 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 73950746906346 241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 1832967731 242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 3294986902 Any clue to this mystery will be really welcome. Thank you very much !!

  Read the article

• How can a single disk in a hardware SATA RAID-10 array bring the entire array to a screeching halt?

  - by Stu Thompson

  Prelude: I'm a code-monkey that's increasingly taken on SysAdmin duties for my small company. My code is our product, and increasingly we provide the same app as SaaS. About 18 months ago I moved our servers from a premium hosting centric vendor to a barebones rack pusher in a tier IV data center. (Literally across the street.) This ment doing much more ourselves--things like networking, storage and monitoring. As part the big move, to replace our leased direct attached storage from the hosting company, I built a 9TB two-node NAS based on SuperMicro chassises, 3ware RAID cards, Ubuntu 10.04, two dozen SATA disks, DRBD and . It's all lovingly documented in three blog posts: Building up & testing a new 9TB SATA RAID10 NFSv4 NAS: Part I, Part II and Part III. We also setup a Cacit monitoring system. Recently we've been adding more and more data points, like SMART values. I could not have done all this without the awesome boffins at ServerFault. It's been a fun and educational experience. My boss is happy (we saved bucket loads of $$$), our customers are happy (storage costs are down), I'm happy (fun, fun, fun). Until yesterday. Outage & Recovery: Some time after lunch we started getting reports of sluggish performance from our application, an on-demand streaming media CMS. About the same time our Cacti monitoring system sent a blizzard of emails. One of the more telling alerts was a graph of iostat await. Performance became so degraded that Pingdom began sending "server down" notifications. The overall load was moderate, there was not traffic spike. After logging onto the application servers, NFS clients of the NAS, I confirmed that just about everything was experiencing highly intermittent and insanely long IO wait times. And once I hopped onto the primary NAS node itself, the same delays were evident when trying to navigate the problem array's file system. Time to fail over, that went well. Within 20 minuts everything was confirmed to be back up and running perfectly. Post-Mortem: After any and all system failures I perform a post-mortem to determine the cause of the failure. First thing I did was ssh back into the box and start reviewing logs. It was offline, completely. Time for a trip to the data center. Hardware reset, backup an and running. In /var/syslog I found this scary looking entry: Nov 15 06:49:44 umbilo smartd[2827]: Device: /dev/twa0 [3ware_disk_00], 6 Currently unreadable (pending) sectors Nov 15 06:49:44 umbilo smartd[2827]: Device: /dev/twa0 [3ware_disk_07], SMART Prefailure Attribute: 1 Raw_Read_Error_Rate changed from 171 to 170 Nov 15 06:49:45 umbilo smartd[2827]: Device: /dev/twa0 [3ware_disk_10], 16 Currently unreadable (pending) sectors Nov 15 06:49:45 umbilo smartd[2827]: Device: /dev/twa0 [3ware_disk_10], 4 Offline uncorrectable sectors Nov 15 06:49:45 umbilo smartd[2827]: Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error Nov 15 06:49:45 umbilo smartd[2827]: # 1 Short offline Completed: read failure 90% 6576 3421766910 Nov 15 06:49:45 umbilo smartd[2827]: # 2 Short offline Completed: read failure 90% 6087 3421766910 Nov 15 06:49:45 umbilo smartd[2827]: # 3 Short offline Completed: read failure 10% 5901 656821791 Nov 15 06:49:45 umbilo smartd[2827]: # 4 Short offline Completed: read failure 90% 5818 651637856 Nov 15 06:49:45 umbilo smartd[2827]: So I went to check the Cacti graphs for the disks in the array. Here we see that, yes, disk 7 is slipping away just like syslog says it is. But we also see that disk 8's SMART Read Erros are fluctuating. There are no messages about disk 8 in syslog. More interesting is that the fluctuating values for disk 8 directly correlate to the high IO wait times! My interpretation is that: Disk 8 is experiencing an odd hardware fault that results in intermittent long operation times. Somehow this fault condition on the disk is locking up the entire array Maybe there is a more accurate or correct description, but the net result has been that the one disk is impacting the performance of the whole array. The Question(s) How can a single disk in a hardware SATA RAID-10 array bring the entire array to a screeching halt? Am I being naïve to think that the RAID card should have dealt with this? How can I prevent a single misbehaving disk from impacting the entire array? Am I missing something?

  Read the article

• T60 Screen/LCD gets black after some minutes with a highpitched sound rising and fading

  - by edelwater

  Just now my T60 screen got "black" (so no display). On my second monitor: no problems so the VGA output works. Symptom: Screen blanks / no display, but it works on the second monitor Steps to reproduce: - boot - wait (it does not matter what you do you do not have to login or anything) - (now the monitor of the laptop slowly begins to make a ssssssssHHHHHHHHHHHHHHHHHWOEOEssssssss noise of about 10 seconds) - right after the sounds ends, the monitor gets black. Sometimes it seems to be the same each time. Software: Installed no new software before/after, running ZoneAlarm and antivirus. Other: It does not feel hot in any place, there don't seem to be running processes with strange behaviour. Warranty: Out of warranty What was I doing: Typing text on a website and doing some PHP coding in a text editor. What can I do here other than buy a new laptop? Does it sound familiar to known cases? Update 1: Exactly the same problem: http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/T60-Screen-Blackout/m-p/288772 and the second poster (garyj), http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/Black-Screen-on-T60/m-p/235053#M48627 And here: "I have that same problem. I replaced the CCRL on mine and it works fine when the screen is not screwed in. Once the frame of the LCD screen (metal portion) touches the metal on the laptop which holds the screen the screen goes black. If the metal is touching the screen when you boot up it boots up with it being very dimmly lit. " from http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/T60-screen-problems/m-p/205047#M44995 (it seems replacing the LCD display is no use, he tried it three times). Same problem: http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/T60-black-screen/m-p/80604#M25914 Hmmm... not handy 3 or 4 months ago I ordered and installed a new fan. Now the LCD. Which does not seem the core issue but some electric issue so it seems replacing the LCD is not the thing to do here. If it is not the LCD that needs to be replaced (see other threads), which parts can I order to fix this? Is there any information which could lead me to identify the issue? I have read replacing the "inverter" AND the "backlightning" would that make sense? Update 2: I replaced the inverter with another inverter, but IO have the same problem. I DID notice that the inverter is the component that makes the sssssssssssssHHHHHHHHHH sound AND it becomes very hot in a few seconds. (So both the old and the test one) The problem is hmmm wat is then the thing that makes the inverter hot by (assumption) after which it shuts itself down. Is it either the input or the output? The output seems to me not, because the screen seems to function so it must be the electricity coming in. But what causes it to become so hot would it be the VGA card outputting some unusual high voltage seems unlikely? I am looking for the component to order / replace update 3: Great news. Ewendish gave me the hint to look in the BIOS. While I was in the BIOS I noticed that the screen did not switch off and there was not a high pitched sound. So I lowered some settings in the BIOS. I then noticed that with brightness turned to 0 (via FN End), it does not make a high pitched sound and does not turn off, with brightness turned up just three "stripes" it starts making the sound. So I could from now on work under lowest brightness modus or... see where the problem lies. So as stated below with either power management or display drivers / ATI Catalyst settings / Windows display settings. I'm trying to see where it lies, but I will google some first. Update 4: I wiped clean the Windows XP installation and installed Windows 7 on it. Unfortunately the problem remains: as soon as the brightness goes up the screen starts hissing. This means... back to original thought: it probably IS a hardware problem. Although ... again... if it is NOT the inverter, what is it? Could it be the backlightning component? I could try to switch that with a another T60... but this is quite tricky.

  Read the article

• Android RatingBar weirdness: Whenever I add a RatingBar to my layout, a bunch of the generated tags,

  - by Rben

  Whenever I use a RatingBar view in my layout, I suddenly get all kinds of compile errors. I'm using Android 2.0, but I've also tried 2.0.1, and 2.1, without joy. I also get a message: Shader 'android.graphics.BitmapShader' is not supported in Layout Editor, and an odd warning which may or maynot be related: warning: Ignoring InnerClasses attribute for an anonymous inner class that doesn't come with an associated EnclosingMethod attribute. I've tried using the RatingBar both within a tablelayout and outside it, but it behaves the same way. This is very puzzling and frustrating. Please help if you can. Sincerely, Ray Here's the XML: <!-- Created By --> <TableRow android:layout_height="wrap_content" android:layout_width="fill_parent" > <TextView android:text="Created by: " android:id="@+id/gi_created_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="right" /> <TextView android:text="Slartibartfast" android:id="@+id/gi_created" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </TableRow> <!-- Verification --> <TableRow android:layout_height="wrap_content" android:layout_width="fill_parent" > <TextView android:id="@+id/gi_verification_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="right" android:text="@string/GameInfoVerificationLabelText" /> <TextView android:id="@+id/gi_verification" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="HonorSystem" /> </TableRow> <!-- Player Rating Label --> <TableRow android:layout_height="wrap_content" android:layout_width="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="right" android:text="@string/GameInfoPlayerRatingLabel" /> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text=" " /> </TableRow> -- <!-- Times played --> <TableRow android:layout_height="wrap_content" android:layout_width="fill_parent" > <TextView android:id="@+id/gi_times_played_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="right" android:text="@string/GameInfoTimesPlayedLabel" /> <TextView android:id="@+id/gi_times_played" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="999" /> </TableRow> <!-- Total Players --> <TableRow android:layout_height="wrap_content" android:layout_width="fill_parent" > <TextView android:id="@+id/gi_total_players_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="right" android:text="@string/GameInfoTotalPlayerCountLabel" /> <TextView android:id="@+id/gi_total_players" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="999" /> </TableRow> <!-- Total Cancelations --> <TableRow android:layout_height="wrap_content" android:layout_width="fill_parent" > <TextView android:id="@+id/gi_total_cancelations_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="right" android:text="@string/GameInfoTotalCancelsLabel" /> <TextView android:id="@+id/gi_total_cancels" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="999" /> </TableRow> <RatingBar android:id="@+/gi_player_rating" style="?android:attr/ratingBarStyleSmall" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_span="2" android:isIndicator="true" android:numStars="5" android:rating="3" android:stepSize="1" android:layout_gravity="center_vertical" /> </TableRow>

  Read the article

• WPF Templates error - "Provide value on 'System.Windows.Baml2006.TypeConverterMarkupExtension' threw

  - by jasonk

  I've just started experimenting with WPF templates vs. styles and I'm not sure what I'm doing wrong. The goal below is to alternate the colors of the options in the menu. The code works fine with just the , but when I copy and paste/rename it for the second segment of "MenuChoiceOdd" I get the following error: Provide value on 'System.Windows.Baml2006.TypeConverterMarkupExtension' threw an exception. Sample of the code: <Window x:Class="WpfApplication1.Template_Testing" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Template_Testing" Height="300" Width="300"> <Grid> <Grid.Resources> <ControlTemplate x:Key="MenuChoiceEven"> <Border BorderThickness="1" BorderBrush="#FF4A5D80"> <TextBlock Height="Auto" HorizontalAlignment="Stretch" Margin="0" Width="Auto" FontSize="14" Foreground="SlateGray" TextAlignment="Left" AllowDrop="True" Text="{Binding Path=Content, RelativeSource={RelativeSource TemplatedParent}}"> <TextBlock.Background> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> <GradientStop Color="White" Offset="0" /> <GradientStop Color="#FFC2CCDB" Offset="1" /> </LinearGradientBrush> </TextBlock.Background> </TextBlock> </Border> </ControlTemplate> <ControlTemplate x:Key="MenuChoiceOdd"> <Border BorderThickness="1" BorderBrush="#FF4A5D80"> <TextBlock Height="Auto" HorizontalAlignment="Stretch" Margin="0" Width="Auto" FontSize="14" Foreground="SlateGray" TextAlignment="Left" AllowDrop="True" Text="{Binding Path=Content, RelativeSource={RelativeSource TemplatedParent}}"> <TextBlock.Background> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> <GradientStop Color="White" Offset="0" /> <GradientStop Color="##FFCBCBCB" Offset="1" /> </LinearGradientBrush> </TextBlock.Background> </TextBlock> </Border> </ControlTemplate> </Grid.Resources> <Border BorderBrush="SlateGray" BorderThickness="2" Margin="10" CornerRadius="10" Background="LightSteelBlue" Width="200"> <StackPanel Margin="4"> <TextBlock Height="Auto" HorizontalAlignment="Stretch" Margin="2,2,2,0" Name="MenuHeaderTextBlock" Text="TextBlock" Width="Auto" FontSize="16" Foreground="PaleGoldenrod" TextAlignment="Left" Padding="10" FontWeight="Bold"><TextBlock.Background><LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"><GradientStop Color="LightSlateGray" Offset="0" /><GradientStop Color="DarkSlateGray" Offset="1" /></LinearGradientBrush></TextBlock.Background></TextBlock> <StackPanel Height="Auto" HorizontalAlignment="Stretch" Margin="2,0,2,0" Name="MenuChoicesStackPanel" VerticalAlignment="Top" Width="Auto"> <Button Template="{StaticResource MenuChoiceEven}" Content="Test Even menu element" /> <Button Template="{StaticResource MenuChoiceOdd}" Content="Test odd menu element" /> </StackPanel> </StackPanel> </Border> </Grid> </Window> What am I doing wrong?

  Read the article

• WPF TabControl - how to preserve control state within tab items (MVVM pattern)

  - by Tim Coulter

  I am a newcomer to WPF, attempting to build a project that follows the recommendations of Josh Smith's excellent article describing The Model-View-ViewModel Design Pattern. Using Josh's sample code as a base, I have created a simple application that contains a number of "workspaces", each represented by a tab in a TabControl. In my application, a workspace is a document editor that allows a hierarchical document to be manipulated via a TreeView control. Although I have succeeded in opening multiple workspaces and viewing their document content in the bound TreeView control, I find that the TreeView "forgets" its state when switching between tabs. For example, if the TreeView in Tab1 is partially expanded, it will be shown as fully collapsed after switching to Tab2 and returning to Tab1. This behaviour appears to apply to all aspects of control state for all controls. After some experimentation, I have realized that I can preserve state within a TabItem by explicitly binding each control state property to a dedicated property on the underlying ViewModel. However, this seems like a lot of additional work, when I simply want all my controls to remember their state when switching between workspaces. I assume I am missing something simple, but I am not sure where to look for the answer. Any guidance would be much appreciated. Thanks, Tim Update: As requested, I will attempt to post some code that demonstrates this problem. However, since the data that underlies the TreeView is complex, I will post a simplified example that exhibits the same symtoms. Here is the XAML from the main window: <TabControl IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Path=Docs}"> <TabControl.ItemTemplate> <DataTemplate> <ContentPresenter Content="{Binding Path=Name}" /> </DataTemplate> </TabControl.ItemTemplate> <TabControl.ContentTemplate> <DataTemplate> <view:DocumentView /> </DataTemplate> </TabControl.ContentTemplate> </TabControl> The above XAML correctly binds to an ObservableCollection of DocumentViewModel, whereby each member is presented via a DocumentView. For the simplicity of this example, I have removed the TreeView (mentioned above) from the DocumentView and replaced it with a TabControl containing 3 fixed tabs: <TabControl> <TabItem Header="A" /> <TabItem Header="B" /> <TabItem Header="C" /> </TabControl> In this scenario, there is no binding between the DocumentView and the DocumentViewModel. When the code is run, the inner TabControl is unable to remember its selection when the outer TabControl is switched. However, if I explicitly bind the inner TabControl's SelectedIndex property ... <TabControl SelectedIndex="{Binding Path=SelectedDocumentIndex}"> <TabItem Header="A" /> <TabItem Header="B" /> <TabItem Header="C" /> </TabControl> ... to a corresponding dummy property on the DocumentViewModel ... public int SelecteDocumentIndex { get; set; } ... the inner tab is able to remember its selection. I understand that I can effectively solve my problem by applying this technique to every visual property of every control, but I am hoping there is a more elegant solution.

  Read the article

• Implements EAN13 and UPC-A barcode in PDF using fpdf in classic ASP

  - by Jeremy N

  /* FPDF library for ASP can be downloaded from: http://www.aspxnet.it/public/default.asp INFORMATIONS: Translated by: Jeremy Author: Olivier License: Freeware DESCRIPTION: This script implements EAN13 and UPC-A barcodes (the second being a particular case of the first one). Bars are drawn directly in the PDF (no image is generated) function EAN13(x,y,barcode,h,w) -x = x coordinate to start drawing the barcode -y = y coordinate to start drawing the barcode -barcode = code to write (must be all numeric) -h = height of the bar -w = the minimum width of individual bar function UPC_A(x,y,barcode,h,w) Same parameters An EAN13 barcode is made up of 13 digits, UPC-A of 12 (leading zeroes are added if necessary). The last digit is a check digit; if it's not supplied or if it is incorrect, it will be automatically computed. USAGE: Copy all of this text and save it in a file called barcode.ext file under fpdf/extends folder EXAMPLE: Set pdf=CreateJsObject("FPDF") pdf.CreatePDF "P","mm","letter" pdf.SetPath("fpdf/") pdf.LoadExtension("barcode") pdf.Open() pdf.AddPage() 'set the fill color to black pdf.setfillcolor 0,0,0 pdf.UPC_A 80,40,"123456789012",16,0.35 pdf.Close() pdf.NewOutput "" , true, "test.pdf" */ this.EAN13=function (x,y,barcode,h,w) { return this.Barcode(x,y,barcode,h,w,13); }; this.UPC_A=function (x,y,barcode,h,w) { return this.Barcode(x,y,barcode,h,w,12); }; function GetCheckDigit(barCode) { bc = barCode.replace(/[^0-9]+/g,''); total = 0; //Get Odd Numbers for (i=bc.length-1; i=0; i=i-2) { total = total + parseInt(bc.substr(i,1)); } //Get Even Numbers for (i=bc.length-2; i=0; i=i-2) { temp = parseInt(bc.substr(i,1)) * 2; if (temp 9) { tens = Math.floor(temp/10); ones = temp - (tens*10); temp = tens + ones; } total = total + temp; } //Determine the checksum modDigit = (10 - total % 10) % 10; return modDigit.toString(); } //Test validity of check digit function TestCheckDigit(barcode) { var cd=GetCheckDigit(barcode.substring(0,barcode.length-1)); return cd==parseInt(barcode.substring(barcode.length-1,1)); } this.Barcode=function Barcode(x,y,barcode,h,w,len) { //Padding while(barcode.length < len-1) { barcode = '0' + barcode; } if(len==12) {barcode='0' + barcode;} //Add or control the check digit if(barcode.length==12) { barcode += GetCheckDigit(barcode); } else { //if the check digit is incorrect, fix the check digit. if(!TestCheckDigit(barcode)) { barcode = barcode.substring(0,barcode.length-1) + GetCheckDigit(barcode.substring(0,barcode.length-1)); } } //Convert digits to bars var codes=[['0001101','0011001','0010011','0111101','0100011','0110001','0101111','0111011','0110111','0001011'], ['0100111','0110011','0011011','0100001','0011101','0111001','0000101','0010001','0001001','0010111'], ['1110010','1100110','1101100','1000010','1011100','1001110','1010000','1000100','1001000','1110100'] ]; var parities=[[0,0,0,0,0,0], [0,0,1,0,1,1], [0,0,1,1,0,1], [0,0,1,1,1,0], [0,1,0,0,1,1], [0,1,1,0,0,1], [0,1,1,1,0,0], [0,1,0,1,0,1], [0,1,0,1,1,0], [0,1,1,0,1,0] ]; var code='101'; var p=parities[parseInt(barcode.substr(0,1))]; var i; for(i=1;i<=6;i++) { code+= codes[p[i-1]][parseInt(barcode.substr(i,1))]; } code+='01010'; for(i=7;i<=12;i++) { code+= codes[2][parseInt(barcode.substr(i,1))]; } code+='101'; //Draw bars for(i=0;i<code.length;i++) { if(code.substr(i,1)=='1') { this.Rect(x+i*w,y,w,h,'F'); } } //Print text uder barcode. this.SetFont('Arial','',12); //Set the x so that the font is centered under the barcode this.Text(x+parseInt(0.5*barcode.length)*w,y+h+11/this.k,barcode.substr(barcode.length-len,len)); }

  Read the article

• TemplateBinding with Converter - what is wrong?

  - by MartyIX

  I'm creating a game desk. I wanted to specify field size (one field is a square) as a attached property and with this data set value of ViewPort which would draw 2x2 matrix (and tile mode would do the rest of game desk). I'm quite at loss what is wrong because the binding doesn't work. Testing line in XAML for the behaviour I would like to have: <DrawingBrush Viewport="0,0,100,100" ViewportUnits="Absolute" TileMode="None"> The game desk is based on this sample of DrawingPaint: http://msdn.microsoft.com/en-us/library/aa970904.aspx (an image is here) XAML: <Window x:Class="Sokoban.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:Sokoban" Title="Window1" Height="559" Width="419"> <Window.Resources> <local:FieldSizeToRectConverter x:Key="fieldSizeConverter" /> <Style x:Key="GameDesk" TargetType="{x:Type Rectangle}"> <Setter Property="local:GameDeskProperties.FieldSize" Value="50" /> <Setter Property="Fill"> <Setter.Value> <!--<DrawingBrush Viewport="0,0,100,100" ViewportUnits="Absolute" TileMode="None">--> <DrawingBrush Viewport="{TemplateBinding local:GameDeskProperties.FieldSize, Converter={StaticResource fieldSizeConverter}}" ViewportUnits="Absolute" TileMode="None"> <DrawingBrush.Drawing> <DrawingGroup> <GeometryDrawing Brush="CornflowerBlue"> <GeometryDrawing.Geometry> <RectangleGeometry Rect="0,0,100,100" /> </GeometryDrawing.Geometry> </GeometryDrawing> <GeometryDrawing Brush="Azure"> <GeometryDrawing.Geometry> <GeometryGroup> <RectangleGeometry Rect="0,0,50,50" /> <RectangleGeometry Rect="50,50,50,50" /> </GeometryGroup> </GeometryDrawing.Geometry> </GeometryDrawing> </DrawingGroup> </DrawingBrush.Drawing> </DrawingBrush> </Setter.Value> </Setter> </Style> </Window.Resources> <StackPanel> <Rectangle Style="{StaticResource GameDesk}" Width="300" Height="150" /> </StackPanel> </Window> Converter and property definition: using System; using System.Collections.Generic; using System.Text; using System.Windows.Controls; using System.Windows; using System.Diagnostics; using System.Windows.Data; namespace Sokoban { public class GameDeskProperties : Panel { public static readonly DependencyProperty FieldSizeProperty; static GameDeskProperties() { PropertyChangedCallback fieldSizeChanged = new PropertyChangedCallback(OnFieldSizeChanged); PropertyMetadata fieldSizeMetadata = new PropertyMetadata(50, fieldSizeChanged); FieldSizeProperty = DependencyProperty.RegisterAttached("FieldSize", typeof(int), typeof(GameDeskProperties), fieldSizeMetadata); } public static int GetFieldSize(DependencyObject target) { return (int)target.GetValue(FieldSizeProperty); } public static void SetFieldSize(DependencyObject target, int value) { target.SetValue(FieldSizeProperty, value); } static void OnFieldSizeChanged(DependencyObject target, DependencyPropertyChangedEventArgs e) { Debug.WriteLine("FieldSize just changed: " + e.NewValue); } } [ValueConversion(/* sourceType */ typeof(int), /* targetType */ typeof(Rect))] public class FieldSizeToRectConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { Debug.Assert(targetType == typeof(int)); int fieldSize = int.Parse(value.ToString()); return new Rect(0, 0, 2 * fieldSize, 2 * fieldSize); } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { // should not be called in our example throw new NotImplementedException(); } } }

  Read the article

• rails gem permissions problem (tabs on rails)

  - by aguynamedloren

  I'm having trouble running a gem, tabs on rails -v=1.3.2, in my rails 2.3.8 app. The gem is installed locally (Ubuntu 10.10) and I have config.gem "tabs_on_rails", :version="1.3.2" in environment.rb. This is the output I get when I run script/server: loren@ubuntu:~/apps/medmentum$ script/server => Booting WEBrick => Rails 2.3.8 application starting on http://0.0.0.0:3000 no such file to load -- tabs_on_rails /usr/lib/ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require' /usr/lib/ruby/1.8/rubygems/custom_require.rb:36:in `require' /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require' /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in' /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require' /var/lib/gems/1.8/gems/rails-2.3.8/lib/rails/gem_dependency.rb:215:in `load' /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:307:in `load_gems' /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:307:in `each' /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:307:in `load_gems' /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:164:in `process' /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:113:in `send' /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:113:in `run' /home/loren/apps/medmentum/config/environment.rb:11 /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require' /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require' /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in' /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require' /var/lib/gems/1.8/gems/rails-2.3.8/lib/commands/server.rb:84 /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require' script/server:3 /var/lib/gems/1.8/gems/rails-2.3.8/lib/rails/plugin.rb:158:in `read': Permission denied - /var/lib/gems/1.8/gems/tabs_on_rails-1.3.2/rails/init.rb (Errno::EACCES) from /var/lib/gems/1.8/gems/rails-2.3.8/lib/rails/plugin.rb:158:in `evaluate_init_rb' from /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/rails/plugin.rb:154:in `evaluate_init_rb' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/rails/plugin.rb:48:in `load' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/rails/plugin/loader.rb:38:in `load_plugins' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/rails/plugin/loader.rb:37:in `each' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/rails/plugin/loader.rb:37:in `load_plugins' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:369:in `load_plugins' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:165:in `process' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:113:in `send' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/initializer.rb:113:in `run' from /home/loren/apps/medmentum/config/environment.rb:11 from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require' from /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require' from /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:521:in `new_constants_in' from /var/lib/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependencies.rb:156:in `require' from /var/lib/gems/1.8/gems/rails-2.3.8/lib/commands/server.rb:84 from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' from /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require' from script/server:3 When I run rake gems:install, I get this: Permission denied - /var/lib/gems/1.8/gems/tabs_on_rails-1.3.2/rails/init.rb I navigated to the tabs_on_rails gem folder in the filesystem and all of the files are locked. According to the files' properties, I am not the owner and cannot change the permissions. All of my other local gems are accessible without permissions problems, so this is odd. Any help is very much appreciated!

  Read the article

• Combined SOAP/JSON/XML in WCF, using UriTemplate

  - by gregmac

  I'm trying to build a generic web service interface using WCF, to allow 3rd party developers to hook into our software. After much struggling and reading (this question helped a lot), I finally got SOAP, JSON and XML (POX) working together. To simplify, here's my code (to make this example simple, I'm not using interfaces -- I did try this both ways): <ServiceContract()> _ Public Class TestService Public Sub New() End Sub <OperationContract()> _ <WebGet()> _ Public Function GetDate() As DateTime Return Now End Function '<WebGet(UriTemplate:="getdateoffset/{numDays}")> _ <OperationContract()> _ Public Function GetDateOffset(ByVal numDays As Integer) As DateTime Return Now.AddDays(numDays) End Function End Class and the web.config code: <services> <service name="TestService" behaviorConfiguration="TestServiceBehavior"> <endpoint address="soap" binding="basicHttpBinding" contract="TestService"/> <endpoint address="json" binding="webHttpBinding" behaviorConfiguration="jsonBehavior" contract="TestService"/> <endpoint address="xml" binding="webHttpBinding" behaviorConfiguration="poxBehavior" contract="TestService"/> <endpoint address="mex" contract="IMetadataExchange" binding="mexHttpBinding" /> </service> </services> <behaviors> <endpointBehaviors> <behavior name="jsonBehavior"> <enableWebScript/> </behavior> <behavior name="poxBehavior"> <webHttp /> </behavior> </endpointBehaviors> <serviceBehaviors> <behavior name="TestServiceBehavior"> <serviceMetadata httpGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="false"/> </behavior> </serviceBehaviors> </behaviors> This actually works -- I'm able to go to TestService.svc/xml/GetDate for xml, TestService.svc/json/GetDate for json, and point a SOAP client at TestService.svc?wsdl and have the SOAP queries work. The part I'd like to fix is the queries. I have to use TestService.svc/xml/GetDateOffset?numDays=4 instead of TestService.svc/xml/GetDateOffset/4. If I specify the UriTemplate, I get the error: Endpoints using 'UriTemplate' cannot be used with 'System.ServiceModel.Description.WebScriptEnablingBehavior'. But of course without using <enableWebScript/>, JSON doesn't work. The only other thing I've seen that I think will work is making 3 different services (.svc files), that all implement an interface that specifies the contract, but in the classes specify different WebGet/WebInvoke attributes on each class. This seems like a lot of extra work, that frankly, I don't see why the framework doesn't handle for me. The implementation of the classes would all be the same, except for the attributes, which means over time it would be easy for bugs/changes to get fixed/done in one implementation but not the others, leading to inconsistent behaviour when using the JSON vs SOAP implementation for example. Am I doing something wrong here? Am I taking a totally wrong approach and misusing WCF? Is there a better way to do this? With my experience doing web stuff, I think it should be possible for some kind of framework to handle this ... I even have an idea in my head of how to build it. It just seems like WCF is supposed to be doing this, and I don't really want to reinvent the wheel.

  Read the article

• Android Title bar leaving space in when application is resumed

  - by user466607

  I am using a Tab Host in my Android App. I have the Titlebar hidden. When I leave the App and resume to it, I have some strange behaviour. If I resume to a tab using a list activity with listView.setAdapter, the title bar is hidden and the space it takes up is consumed by the App. However, if I resume to any tab without the listView.setAdapter, the Titlebar is hidden, but space which was used by it is left behind. This is pushes my tabs (which are positioned at the bottom of the screen) off the screen. The space is once again consumed by my app if I then change to any other tab. I have tried to invalidate most of the obvious Views in my App without and success. Below is my tab_activity xml. many thanks <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <FrameLayout android:id="@android:id/tabcontent" android:layout_width="fill_parent" android:layout_height="0dip" android:layout_weight="1" /> <TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="0" /> </LinearLayout> </TabHost> </LinearLayout> Here is the Manifest <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.tar.projectx" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="8" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.CALL_PHONE" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.GET_ACCOUNTS" /> <uses-permission android:name="android.permission.READ_CONTACTS" /> <uses-permission android:name="android.permission.WRITE_CONTACTS" /> <application android:theme="@android:style/Theme.Light.NoTitleBar.Fullscreen" android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true"> <activity android:name=".Splash" android:theme="@android:style/Theme.Light.NoTitleBar.Fullscreen" android:label="@string/app_name" android:screenOrientation="portrait"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="SearchActivity" android:label="SearchActivity" android:screenOrientation="portrait"></activity> <activity android:name="SearchListActivity" android:label="SearchListActivity" android:screenOrientation="portrait"></activity> <activity android:name="ContactActivity" android:label="ContactActivity" android:screenOrientation="portrait"></activity> </application> </manifest> Interestingly, if I use the code below in the onResume method of my mainActivity which holds the tabhost, once the toast disappears, the view is refreshed and the space at the top is taken up by my app again. Obviously, this isn't much of a fix, but may help someone understand what is happening. @Override protected void onResume() { super.onResume(); Toast.makeText(this, "Welcome Back", Toast.LENGTH_LONG).show(); }

  Read the article

• Point in polygon OR point on polygon using LINQ

  - by wageoghe

  As noted in an earlier question, How to Zip enumerable with itself, I am working on some math algorithms based on lists of points. I am currently working on point in polygon. I have the code for how to do that and have found several good references here on SO, such as this link Hit test. So, I can figure out whether or not a point is in a polygon. As part of determining that, I want to determine if the point is actually on the polygon. This I can also do. If I can do all of that, what is my question you might ask? Can I do it efficiently using LINQ? I can already do something like the following (assuming a Pairwise extension method as described in my earlier question as well as in links to which my question/answers links, and assuming a Position type that has X and Y members). I have not tested much, so the lambda might not be 100% correct. Also, it does not take very small differences into account. public static PointInPolygonLocation PointInPolygon(IEnumerable<Position> pts, Position pt) { int numIntersections = pts.Pairwise( (p1, p2) => { if (p1.Y != p2.Y) { if ((p1.Y >= pt.Y && p2.Y < pt.Y) || (p1.Y < pt.Y && p2.Y >= pt.Y)) { if (p1.X < p1.X && p2.X < pt.X) { return 1; } if (p1.X < pt.X || p2.X < pt.X) { if (((pt.Y - p1.Y) * ((p1.X - p2.X) / (p1.Y - p2.Y)) * p1.X) < pt.X) { return 1; } } } } return 0; }).Sum(); if (numIntersections % 2 == 0) { return PointInPolygonLocation.Outside; } else { return PointInPolygonLocation.Inside; } } This function, PointInPolygon, takes the input Position, pt, iterates over the input sequence of position values, and uses the Jordan Curve method to determine how many times a ray extended from pt to the left intersects the polygon. The lambda expression will yield, into the "zipped" list, 1 for every segment that is crossed, and 0 for the rest. The sum of these values determines if pt is inside or outside of the polygon (odd == inside, even == outside). So far, so good. Now, for any consecutive pairs of position values in the sequence (i.e. in any execution of the lambda), we can also determine if pt is ON the segment p1, p2. If that is the case, we can stop the calculation because we have our answer. Ultimately, my question is this: Can I perform this calculation (maybe using Aggregate?) such that we will only iterate over the sequence no more than 1 time AND can we stop the iteration if we encounter a segment that pt is ON? In other words, if pt is ON the very first segment, there is no need to examine the rest of the segments because we have the answer. It might very well be that this operation (particularly the requirement/desire to possibly stop the iteration early) does not really lend itself well to the LINQ approach. It just occurred to me that maybe the lambda expression could yield a tuple, the intersection value (1 or 0 or maybe true or false) and the "on" value (true or false). Maybe then I could use TakeWhile(anontype.PointOnPolygon == false). If I Sum the tuples and if ON == 1, then the point is ON the polygon. Otherwise, the oddness or evenness of the sum of the other part of the tuple tells if the point is inside or outside.

  Read the article

• How can I dynamically change auto complete entries in a C# combobox or textbox?

  - by Sam Hopkins

  I have a combobox in C# and I want to use auto complete suggestions with it, however I want to be able to change the auto complete entries as the user types, because the possible valid entries are far too numerous to populate the AutoCompleteStringCollection at startup. As an example, suppose I'm letting the user type in a name. I have a list of possible first names ("Joe", "John") and a list of surnames ("Bloggs", "Smith"), but if I have a thousand of each, then that would be a million possible strings - too many to put in the auto complete entries. So initially I want to have just the first names as suggestions ("Joe", "John") , and then once the user has typed the first name, ("Joe"), I want to remove the existing auto complete entries and replace them with a new set consisting of the chosen first name followed by the possible surnames ("Joe Bloggs", "Joe Smith"). In order to do this, I tried the following code: void InitializeComboBox() { ComboName.AutoCompleteMode = AutoCompleteMode.SuggestAppend; ComboName.AutoCompleteSource = AutoCompleteSource.CustomSource; ComboName.AutoCompleteCustomSource = new AutoCompleteStringCollection(); ComboName.TextChanged += new EventHandler( ComboName_TextChanged ); } void ComboName_TextChanged( object sender, EventArgs e ) { string text = this.ComboName.Text; string[] suggestions = GetNameSuggestions( text ); this.ComboQuery.AutoCompleteCustomSource.Clear(); this.ComboQuery.AutoCompleteCustomSource.AddRange( suggestions ); } However, this does not work properly. It seems that the call to Clear() causes the auto complete mechanism to "turn off" until the next character appears in the combo box, but of course when the next character appears the above code calls Clear() again, so the user never actually sees the auto complete functionality. It also causes the entire contents of the combo box to become selected, so between every keypress you have to deselect the existing text, which makes it unusable. If I remove the call to Clear() then the auto complete works, but it seems that then the AddRange() call has no effect, because the new suggestions that I add do not appear in the auto complete dropdown. I have been searching for a solution to this, and seen various things suggested, but I cannot get any of them to work - either the auto complete functionality appears disabled, or new strings do not appear. Here is a list of things I have tried: Calling BeginUpdate() before changing the strings and EndUpdate() afterwards. Calling Remove() on all the existing strings instead of Clear(). Clearing the text from the combobox while I update the strings, and adding it back afterwards. Setting the AutoCompleteMode to "None" while I change the strings, and setting it back to "SuggestAppend" afterwards. Hooking the TextUpdate or KeyPress event instead of TextChanged. Replacing the existing AutoCompleteCustomSource with a new AutoCompleteStringCollection each time. None of these helped, even in various combinations. Spence suggested that I try overriding the ComboBox function that gets the list of strings to use in auto complete. Using a reflector I found a couple of methods in the ComboBox class that look promising - GetStringsForAutoComplete() and SetAutoComplete(), but they are both private so I can't access them from a derived class. I couldn't take that any further. I tried replacing the ComboBox with a TextBox, because the auto complete interface is the same, and I found that the behaviour is slightly different. With the TextBox it appears to work better, in that the Append part of the auto complete works properly, but the Suggest part doesn't - the suggestion box briefly flashes to life but then immediately disappears. So I thought "Okay, I'll

  Read the article

• ASP.NET 3.5/C# Menu Control in Master Page fails to use CSS styles

  - by Shaun

  I'm working on a web application that uses ASP.NET 3.5 and C#. Structurally, I have a master page with a menu control on it. The control serves as my navigation, and it gets its items from a SiteMapDataSource control and a corresponding Web.sitemap file. The problem is that some styles do not render properly when you specify the CssClass property. More specifically, the selected and hover styles don't respond to css styles. Consider the code below: <%@ Master Language="C#" AutoEventWireup="true" CodeFile="Site.master.cs" Inherits="Site" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.or/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title>A webpage</title> </head> <body> <form id="form1" runat="server"> <div id="page"> <asp:Menu ID="navMenu" Orientation="Horizontal" StaticMenuStyle-CssClass="staticMenu" StaticMenuItemStyle-CssClass="staticMenuItem" StaticSelectedStyle-CssClass="staticSelectedItem" StaticHoverStyle-CssClass="staticHoverItem" runat="server"> </asp:Menu> <asp:SiteMapDataSource ID="srcSiteMap" runat="server" ShowStartingNode="false" /> <br /> <asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server"> </asp:ContentPlaceHolder> </div> </form> </body> </html> Suppose I had a corresponding .css file with the following: .staticMenuItem { background-color:Red; } .staticSelectedItem { background-color:Green; } .staticHoverItem { background-color:Blue; } What will happen is that my item backgrounds will properly be red, but my selected item will not be green and the item I'm hovering my mouse over will not be blue. This seems true regardless of whether or not I include the style in the head of the master page or in an external file in default theme as specified in the web.config file. If I specify the styles in the asp.net xml like so: <asp:Menu ID="navMenu" Orientation="Horizontal" runat="server"> <StaticSelectedStyle BackColor="Green" Font-Underline="True" Font-Bold="True" /> <StaticHoverStyle BackColor="Gray" /> </asp:Menu> It appears to work properly in Firefox, but the style is never embedded in the html in Internet Explorer. Odd. Does anybody have any insight into what is causing this problem and how to neatly work around it? I'm aware I might be able to programmically determine the current page and select the corresponding menu item manually so it receives the proper style class, but before I resort to hacking C# and Javascript together to fix this functionality, I'm open to ideas. Thanks!

  Read the article

• Implementing Unit Testing on the iPhone

  - by james.ingham

  Hi, So I've followed this tutorial to setup unit testing on my app when I got a little stuck. At bullet point 8 in that tutorial it shows this image, which is what I should be expecting when I build: However this isn't what I get when I build. I get this error message: Command /bin/sh failed with exit code 1 as well as the error message the unit test has created. Then, when I expand on the first error I get this: PhaseScriptExecution "Run Script" "build/3D Pool.build/Debug-iphonesimulator/LogicTests.build/Script-1A6BA6AE10F28F40008AC2A8.sh" cd "/Users/james/Desktop/FYP/3D Pool" setenv ACTION build setenv ALTERNATE_GROUP staff ... setenv XCODE_VERSION_MAJOR 0300 setenv XCODE_VERSION_MINOR 0320 setenv YACC /Developer/usr/bin/yacc /bin/sh -c "\"/Users/james/Desktop/FYP/3D Pool/build/3D Pool.build/Debug-iphonesimulator/LogicTests.build/Script-1A6BA6AE10F28F40008AC2A8.sh\"" /Developer/Tools/RunPlatformUnitTests.include:412: note: Started tests for architectures 'i386' /Developer/Tools/RunPlatformUnitTests.include:419: note: Running tests for architecture 'i386' (GC OFF) objc[12589]: GC: forcing GC OFF because OBJC_DISABLE_GC is set Test Suite '/Users/james/Desktop/FYP/3D Pool/build/Debug-iphonesimulator/LogicTests.octest(Tests)' started at 2010-01-04 21:05:06 +0000 Test Suite 'LogicTests' started at 2010-01-04 21:05:06 +0000 Test Case '-[LogicTests testFail]' started. /Users/james/Desktop/FYP/3D Pool/LogicTests.m:17: error: -[LogicTests testFail] : Must fail to succeed. Test Case '-[LogicTests testFail]' failed (0.000 seconds). Test Suite 'LogicTests' finished at 2010-01-04 21:05:06 +0000. Executed 1 test, with 1 failure (0 unexpected) in 0.000 (0.000) seconds Test Suite '/Users/james/Desktop/FYP/3D Pool/build/Debug-iphonesimulator/LogicTests.octest(Tests)' finished at 2010-01-04 21:05:06 +0000. Executed 1 test, with 1 failure (0 unexpected) in 0.000 (0.002) seconds /Developer/Tools/RunPlatformUnitTests.include:448: error: Failed tests for architecture 'i386' (GC OFF) /Developer/Tools/RunPlatformUnitTests.include:462: note: Completed tests for architectures 'i386' Command /bin/sh failed with exit code 1 Now this is very odd as it is running the tests (and succeeding as you can see my STFail firing) because if I add a different test which passes I get no errors, so the tests are working fine. But why am I getting this extra build fail? It may also be of note that when downloading solutions/templates which should work out the box, I get the same error. I'm guessing I've set something up wrong here but I've just followed a tutorial 100% correctly!! If anyone could help I'd be very grateful! Thanks EDIT: According to this blog, this post and a few other websites, I'm not the only one getting this problem. It has been like this since the release of xCode 3.2, assuming the apple dev center documents and tutorials etc are pre-3.2 as well. However some say its a known issue whereas others seem to think this was intentional. I for one would like both the extended console and in code messages, and I certainly do not like the "Command /bin/sh..." error and really think they would have documented such an update. Hopefully it will be fixed soon anyway. UPDATE: Here's confirmation it's something changed since the release of xCode 3.2.1. This image: is from my test build using 3.2.1. This one is from an older version (3.1.4): . (The project for both was unchanged).

  Read the article

• WPF Binding Error reported when Binding appears to work fine

  - by Noldorin

  I am trying to create a custom TabItem template/style in my WPF 4.0 application (using VS 2010 Pro RTM), but inspite of everything seeming to work correctly, I am noticing a binding error in the trace window. The resource dictionary XAML I use to style the TabItems of a TabControl is given in full here. (Just create a simple TabControl with several items and apply the given ResourceDictionary to test it out.) Specifically, the error is occurring due to the following line (discovered through trial and error testing, since Visual Studio isn't actually reporting it at design tim <TranslateTransform X="{Binding ActualWidth, ElementName=leftSideBorderPath}"/> The full error given in the trace (Ouput window) is the following: System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or FrameworkContentElement for target element. BindingExpression:Path=ActualWidth; DataItem=null; target element is 'TranslateTransform' (HashCode=35345840); target property is 'X' (type 'Double') The error occurs on load and is repeated 5 times then (note that I have 3 tab items in my example). It also occurs consistently and repeatedly whenever for the Window is resized, for example - filling the Output window. Perhaps every time the TabItem layout is updated? And again, though it is not reported, the error very much seems to be due to the fact that I am binding to any element at all, not specifically leftSideBorderPath or the the ActualWidth propertry. For example, changing this line to the following fixes things. <TranslateTransform X="25"/> Unfortunately, hard-coding the value isn't really an option. This issue seems very strange to me in that the binding does appear to be giving the correct results. (Inspecting the X value of the TranslateTransform at runtime clearly shows the correct bound value, and the ClipGeometry when viewed is exactly what it hsould be.) Neither Visual Studio nor WPF seems to be giving me any more information on the cause of the error perhaps (setting PresentationTraceSources.TraceLevel to High doesn't help), yet the fact that things are working despite the error being reported inclines me to think that this is some fringe-case WPF bug. As a side note, the Visual Studio WPF designer and XAML editor are giving me a problem with the following line: <PathGeometry Figures="{Binding Source={StaticResource TabSideFillFigures}}"/> Although WPF (at runtime) is perfectly happy binding Figures to the TabSideFillFigures string, with the Binding enforcing the use of the TypeConverter, the XAML editor and WPF designer are complaining. All the XAML code for the ControlTemplate is underlined and I get the following errors in the Error List: Error 9 '{DependencyProperty.UnsetValue}' is not a valid value for the 'System.Windows.Controls.Control.Template' property on a Setter. C:\Users\Alex\Documents\Visual Studio 2010\Projects\Ircsil\devel\Ircsil\MainWindow.xaml 1 1 Ircsil Error 10 Object reference not set to an instance of an object. C:\Users\Alex\Documents\Visual Studio 2010\Projects\Ircsil\devel\Ircsil\Skins\Default\MainSkin.xaml 58 17 Ircsil Again, to repeat, everything works perfectly well at runtime, which is what makes this particularly odd... Could someone perhaps shed some light on these issues, in particular the first (which seems to be a potential WPF bug), and the latter (which seems to be a Visual Studio bug). Any sort of feedback or suggestions would be much appreciated!

  Read the article

• Mercurial hg clone on Windows via ssh with copSSH issue

  - by Kyle Tolle

  I have a Windows Server 2008 machine (iis7) that has CopSSH set up on it. To connect to it, I have a Windows 7 machine with Mercurial 1.5.1 (and TortoiseHg) installed. I can connect to the server using PuTTY with a non-standard ssh port and a .ppk file just fine. So I know the server can be SSH'd into. Next, I wanted to use the CLI to connect via hg clone to get a private repo. I've seen elsewhere that you need to have ssh configured in your mercurial.ini file, so my mercurial.ini has a line: ssh = plink.exe -ssh -C -l username -P #### -i "C:/Program Files/PuTTY/Key Files/KyleKey.ppk" Note: username is filled in with the username I set up via copSSH. #### is filled in with the non-standard ssh port I've defined for copSSH. I try to do the command hg clone ssh://inthom.com but I get this error: remote: bash: inthom.com: command not found abort: no suitable response from remote hg! It looks like hg or plink parses the hostname such that it thinks that inthom.com is a command instead of the server to ssh to. That's really odd. Next, I tried to just use plink to connect by plink -P #### ssh://inthom.com, and I am then prompted for my username, and next password. I enter them both and then I get this error: bash: ssh://inthom.com: No such file or directory So now it looks like plink doesn't parse the hostname correctly. I fiddled around for a while trying to figure out how to do call hg clone with an empty ssh:// field and eventually figured out that this command allows me to reach the server and clone a test repo on the inthom.com server: hg clone ssh://!/Repos/test ! is the character I've found that let's me leave the hostname blank, but specify the repo folder to clone. What I really don't understand is how plink knows what server to ssh to at all. neither my mercurial.ini nor the command specify a server. None of the hg clone examples I've seen have a ! character. They all use an address, which makes sense, so you can connect to any repo via ssh that you want to clone. My only guess is that it somehow defaults to the last server I used PuTTY to SSH to, but I SSH'd into another server, and then tried to use plink to get to it, but plink still defaults to inthom.com (verified with the -v arg to plink). So I am at a loss as to how plink gets this server value at all. For "fun", I tried using TortoiseHg and can only clone a repo when I use ssh://!/Repos/test as the Source. Now, you can see that, since plink doesn't parse the hostname correctly, I had to specify the port number and username in the mercurial.ini file, instead of in the hostname like [email protected]:#### like you'd expect to. Trying to figure this out at first drove me insane, because I would get errors that the host couldn't be reached, which I knew shouldn't be the case. My question is how can I configure my setup so that ssh://[email protected]:####/Repos/test is parsed correctly as the username, hostname, port number, and repo to copy? Is it something wrong with the version of plink that I'm using, or is there some setting I may have messed up? If it is plink's fault, is there an alternative tool I can use? I'm going to try to get my friend set up to connect to this same repo, so I'd like to have a clean solution instead of this ! business. Especially when I have no idea how plink gets this default server, so I'm not sure if he'd even be able to get to inthom.com correctly. PS. I've had to use a ton of different tutorials to even get to this stage. Therefore, I haven't tried pushing any changes to the server yet. Hopefully I'll get this figured out and then I can try pushing changes to the repo.

  Read the article

• Android 1.5 - 2.1 Search Activity affects Parent Lifecycle

  - by pacoder

  Behavior seems consistent in Android 1.5 to 2.1 Short version is this, it appears that when my (android search facility) search activity is fired from the android QSR due to either a suggestion or search, UNLESS my search activity in turn fires off a VISIBLE activity that is not the parent of the search, the search parents life cycle changes. It will NOT fire onDestroy until I launch a visible activity from it. If I do, onDestroy will fire fine. I need a way to get around this behavior... The long version: We have implemented a SearchSuggestion provider and a Search activity in our application. The one thing about it that is very odd is that if the SearchManager passes control to our custom Search activity, AND that activity does not create a visible Activity the Activity which parented the search does not destroy (onDestroy doesn't run) and it will not until we call a visible Activity from the parent activity. As long as our Search Activity fires off another Activity that gets focus the parent activity will fire onDestroy when I back out of it. The trick is that Activity must have a visual component. I tried to fake it out with a 'pass through' Activity so that my Search Activity could fire off another Intent and bail out but that didn't work either. I have tried setting our SearchActivity to launch singleTop and I also tried setting its noHistory attribute to true, tried setResult(RESULT_OK) in SearchACtivity prior to finish, bunch of other things, nothing is working. This is the chunk of code in our Search Activity onCreate. Couple of notes about it: If Intent is Action_Search (user typed in their own search and didn't pick a suggestion), we display a list of results as our Search Activity is a ListActivity. In this case when the item is picked, the Search Activity closes and our parent Activity does fire onDestroy() when we back out. If Intent is Action_View (user picked a suggestion) when type is "action" we fire off an Intent that creates a new visible Activity. In this case same thing, when we leave that new activity and return to the parent activity, the back key does cause the parent activity to fire onDestroy when leaving. If Intent is Action_View (user picked a suggestion) when type is "pitem" is where the problem lies. It works fine (the method call focuses an item on the parent activity), but when the back button is hit on the parent activity onDestroy is NOT called. IF after this executes I pick an option in the parent activity that fires off another activity and return to the parent then back out it will fire onDestroy() in the parent activity. Note that the "action" intent ends up running the exact same method call as "pitem", it just bring up a new visual Activity first. Also I can take out the method call from "pitem" and just finish() and the behavior is the same, the parent activity doesn't fire onDestroy() when backed out of. if (Intent.ACTION_SEARCH.equals(queryAction)) { this.setContentView(_layoutId); String searchKeywords = queryIntent.getStringExtra(SearchManager.QUERY); init(searchKeywords); } else if(Intent.ACTION_VIEW.equals(queryAction)){ Bundle bundle = queryIntent.getExtras(); String key = queryIntent.getDataString(); String userQuery = bundle.getString(SearchManager.USER_QUERY); String[] keyValues = key.split("-"); if(keyValues.length == 2) { String type = keyValues[0]; String value = keyValues[1]; if(type.equals("action")) { Intent intent = new Intent(this, EventInfoActivity.class); Long longKey = Long.parseLong(value); intent.putExtra("vo_id", longKey); startActivity(intent); finish(); } else if(type.equals("pitem")) { Integer id = Integer.parseInt(value); _application._servicesManager._mapHandlerSelector.selectInfoItem(id); finish(); } } } It just seems like something is being held onto and I can't figure out what it is, in all cases the Search Activity fires onDestroy() when finish() is called so it is definitely going away. If anyone has any suggestions I'd be most appreciative. Thanks, Sean Overby

  Read the article

• How to detect a timeout when using asynchronous Socket.BeginReceive?

  - by James Hugard

  Writing an asynchronous Ping using Raw Sockets in F#, to enable parallel requests using as few threads as possible. Not using "System.Net.NetworkInformation.Ping", because it appears to allocate one thread per request. Am also interested in using F# async workflows. The synchronous version below correctly times out when the target host does not exist/respond, but the asynchronous version hangs. Both work when the host does respond. Not sure if this is a .NET issue, or an F# one... Any ideas? (note: the process must run as Admin to allow Raw Socket access) This throws a timeout: let result = Ping.Ping ( IPAddress.Parse( "192.168.33.22" ), 1000 ) However, this hangs: let result = Ping.AsyncPing ( IPAddress.Parse( "192.168.33.22" ), 1000 ) |> Async.RunSynchronously Here's the code... module Ping open System open System.Net open System.Net.Sockets open System.Threading //---- ICMP Packet Classes type IcmpMessage (t : byte) = let mutable m_type = t let mutable m_code = 0uy let mutable m_checksum = 0us member this.Type with get() = m_type member this.Code with get() = m_code member this.Checksum = m_checksum abstract Bytes : byte array default this.Bytes with get() = [| m_type m_code byte(m_checksum) byte(m_checksum >>> 8) |] member this.GetChecksum() = let mutable sum = 0ul let bytes = this.Bytes let mutable i = 0 // Sum up uint16s while i < bytes.Length - 1 do sum <- sum + uint32(BitConverter.ToUInt16( bytes, i )) i <- i + 2 // Add in last byte, if an odd size buffer if i <> bytes.Length then sum <- sum + uint32(bytes.[i]) // Shuffle the bits sum <- (sum >>> 16) + (sum &&& 0xFFFFul) sum <- sum + (sum >>> 16) sum <- ~~~sum uint16(sum) member this.UpdateChecksum() = m_checksum <- this.GetChecksum() type InformationMessage (t : byte) = inherit IcmpMessage(t) let mutable m_identifier = 0us let mutable m_sequenceNumber = 0us member this.Identifier = m_identifier member this.SequenceNumber = m_sequenceNumber override this.Bytes with get() = Array.append (base.Bytes) [| byte(m_identifier) byte(m_identifier >>> 8) byte(m_sequenceNumber) byte(m_sequenceNumber >>> 8) |] type EchoMessage() = inherit InformationMessage( 8uy ) let mutable m_data = Array.create 32 32uy do base.UpdateChecksum() member this.Data with get() = m_data and set(d) = m_data <- d this.UpdateChecksum() override this.Bytes with get() = Array.append (base.Bytes) (this.Data) //---- Synchronous Ping let Ping (host : IPAddress, timeout : int ) = let mutable ep = new IPEndPoint( host, 0 ) let socket = new Socket( AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp ) socket.SetSocketOption( SocketOptionLevel.Socket, SocketOptionName.SendTimeout, timeout ) socket.SetSocketOption( SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, timeout ) let packet = EchoMessage() let mutable buffer = packet.Bytes try if socket.SendTo( buffer, ep ) <= 0 then raise (SocketException()) buffer <- Array.create (buffer.Length + 20) 0uy let mutable epr = ep :> EndPoint if socket.ReceiveFrom( buffer, &epr ) <= 0 then raise (SocketException()) finally socket.Close() buffer //---- Entensions to the F# Async class to allow up to 5 paramters (not just 3) type Async with static member FromBeginEnd(arg1,arg2,arg3,arg4,beginAction,endAction,?cancelAction): Async<'T> = Async.FromBeginEnd((fun (iar,state) -> beginAction(arg1,arg2,arg3,arg4,iar,state)), endAction, ?cancelAction=cancelAction) static member FromBeginEnd(arg1,arg2,arg3,arg4,arg5,beginAction,endAction,?cancelAction): Async<'T> = Async.FromBeginEnd((fun (iar,state) -> beginAction(arg1,arg2,arg3,arg4,arg5,iar,state)), endAction, ?cancelAction=cancelAction) //---- Extensions to the Socket class to provide async SendTo and ReceiveFrom type System.Net.Sockets.Socket with member this.AsyncSendTo( buffer, offset, size, socketFlags, remoteEP ) = Async.FromBeginEnd( buffer, offset, size, socketFlags, remoteEP, this.BeginSendTo, this.EndSendTo ) member this.AsyncReceiveFrom( buffer, offset, size, socketFlags, remoteEP ) = Async.FromBeginEnd( buffer, offset, size, socketFlags, remoteEP, this.BeginReceiveFrom, (fun asyncResult -> this.EndReceiveFrom(asyncResult, remoteEP) ) ) //---- Asynchronous Ping let AsyncPing (host : IPAddress, timeout : int ) = async { let ep = IPEndPoint( host, 0 ) use socket = new Socket( AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp ) socket.SetSocketOption( SocketOptionLevel.Socket, SocketOptionName.SendTimeout, timeout ) socket.SetSocketOption( SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, timeout ) let packet = EchoMessage() let outbuffer = packet.Bytes try let! result = socket.AsyncSendTo( outbuffer, 0, outbuffer.Length, SocketFlags.None, ep ) if result <= 0 then raise (SocketException()) let epr = ref (ep :> EndPoint) let inbuffer = Array.create (outbuffer.Length + 256) 0uy let! result = socket.AsyncReceiveFrom( inbuffer, 0, inbuffer.Length, SocketFlags.None, epr ) if result <= 0 then raise (SocketException()) return inbuffer finally socket.Close() }

  Read the article

• Scaling MKMapView Annotations relative to the zoom level

  - by Jonathan

  The Problem I'm trying to create a visual radius circle around a annonation, that remains at a fixed size in real terms. Eg. So If i set the radius to 100m, as you zoom out of the Map view the radius circle gets progressively smaller. I've been able to achieve the scaling, however the radius rect/circle seems to "Jitter" away from the Pin Placemark as the user manipulates the view. The Manifestation Here is a video of the behaviour. The Implementation The annotations are added to the Mapview in the usual fashion, and i've used the delegate method on my UIViewController Subclass (MapViewController) to see when the region changes. -(void)mapView:(MKMapView *)pMapView regionDidChangeAnimated:(BOOL)animated{ //Get the map view MKCoordinateRegion region; CGRect rect; //Scale the annotations for( id<MKAnnotation> annotation in [[self mapView] annotations] ){ if( [annotation isKindOfClass: [Location class]] && [annotation conformsToProtocol:@protocol(MKAnnotation)] ){ //Approximately 200 m radius region.span.latitudeDelta = 0.002f; region.span.longitudeDelta = 0.002f; region.center = [annotation coordinate]; rect = [[self mapView] convertRegion:foo toRectToView: self.mapView]; if( [[[self mapView] viewForAnnotation: annotation] respondsToSelector:@selector(setRadiusFrame:)] ){ [[[self mapView] viewForAnnotation: annotation] setRadiusFrame:rect]; } } } The Annotation object (LocationAnnotationView)is a subclass of the MKAnnotationView and it's setRadiusFrame looks like this -(void) setRadiusFrame:(CGRect) rect{ CGPoint centerPoint; //Invert centerPoint.x = (rect.size.width/2) * -1; centerPoint.y = 0 + 55 + ((rect.size.height/2) * -1); rect.origin = centerPoint; [self.radiusView setFrame:rect]; } And finally the radiusView object is a subclass of a UIView, that overrides the drawRect method to draw the translucent circles. setFrame is also over ridden in this UIView subclass, but it only serves to call [UIView setNeedsDisplay] in addition to [UIView setFrame:] to ensure that the view is redrawn after the frame has been updated. The radiusView object's (CircleView) drawRect method looks like this -(void) drawRect:(CGRect)rect{ //NSLog(@"[CircleView drawRect]"); [self setBackgroundColor:[UIColor clearColor]]; //Declarations CGContextRef context; CGMutablePathRef path; //Assignments context = UIGraphicsGetCurrentContext(); path = CGPathCreateMutable(); //Alter the rect so the circle isn't cliped //Calculate the biggest size circle if( rect.size.height > rect.size.width ){ rect.size.height = rect.size.width; } else if( rect.size.height < rect.size.width ){ rect.size.width = rect.size.height; } rect.size.height -= 4; rect.size.width -= 4; rect.origin.x += 2; rect.origin.y += 2; //Create paths CGPathAddEllipseInRect(path, NULL, rect ); //Create colors [[self areaColor] setFill]; CGContextAddPath( context, path); CGContextFillPath( context ); [[self borderColor] setStroke]; CGContextSetLineWidth( context, 2.0f ); CGContextSetLineCap(context, kCGLineCapSquare); CGContextAddPath(context, path ); CGContextStrokePath( context ); CGPathRelease( path ); //CGContextRestoreGState( context ); } Thanks for bearing with me, any help is appreciated. Jonathan

  Read the article

• Why does async BeginReceiveFrom never time out on a raw socket?

  - by James Hugard

  Writing an asynchronous Ping using Raw Sockets in F#, to enable parallel requests using as few threads as possible. Not using "System.Net.NetworkInformation.Ping", because it appears to allocate one thread per request. Am also interested in using F# async workflows. The synchronous version below correctly times out when the target host does not exist/respond, but the asynchronous version hangs. Both work when the host does respond. Not sure if this is a .NET issue, or an F# one... Any ideas? (note: the process must run as Admin to allow Raw Socket access) This throws a timeout: let result = Ping.Ping ( IPAddress.Parse( "192.168.33.22" ), 1000 ) However, this hangs: let result = Ping.AsyncPing ( IPAddress.Parse( "192.168.33.22" ), 1000 ) |> Async.RunSynchronously Here's the code... module Ping open System open System.Net open System.Net.Sockets open System.Threading //---- ICMP Packet Classes type IcmpMessage (t : byte) = let mutable m_type = t let mutable m_code = 0uy let mutable m_checksum = 0us member this.Type with get() = m_type member this.Code with get() = m_code member this.Checksum = m_checksum abstract Bytes : byte array default this.Bytes with get() = [| m_type m_code byte(m_checksum) byte(m_checksum >>> 8) |] member this.GetChecksum() = let mutable sum = 0ul let bytes = this.Bytes let mutable i = 0 // Sum up uint16s while i < bytes.Length - 1 do sum <- sum + uint32(BitConverter.ToUInt16( bytes, i )) i <- i + 2 // Add in last byte, if an odd size buffer if i <> bytes.Length then sum <- sum + uint32(bytes.[i]) // Shuffle the bits sum <- (sum >>> 16) + (sum &&& 0xFFFFul) sum <- sum + (sum >>> 16) sum <- ~~~sum uint16(sum) member this.UpdateChecksum() = m_checksum <- this.GetChecksum() type InformationMessage (t : byte) = inherit IcmpMessage(t) let mutable m_identifier = 0us let mutable m_sequenceNumber = 0us member this.Identifier = m_identifier member this.SequenceNumber = m_sequenceNumber override this.Bytes with get() = Array.append (base.Bytes) [| byte(m_identifier) byte(m_identifier >>> 8) byte(m_sequenceNumber) byte(m_sequenceNumber >>> 8) |] type EchoMessage() = inherit InformationMessage( 8uy ) let mutable m_data = Array.create 32 32uy do base.UpdateChecksum() member this.Data with get() = m_data and set(d) = m_data <- d this.UpdateChecksum() override this.Bytes with get() = Array.append (base.Bytes) (this.Data) //---- Synchronous Ping let Ping (host : IPAddress, timeout : int ) = let mutable ep = new IPEndPoint( host, 0 ) let socket = new Socket( AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp ) socket.SetSocketOption( SocketOptionLevel.Socket, SocketOptionName.SendTimeout, timeout ) socket.SetSocketOption( SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, timeout ) let packet = EchoMessage() let mutable buffer = packet.Bytes try if socket.SendTo( buffer, ep ) <= 0 then raise (SocketException()) buffer <- Array.create (buffer.Length + 20) 0uy let mutable epr = ep :> EndPoint if socket.ReceiveFrom( buffer, &epr ) <= 0 then raise (SocketException()) finally socket.Close() buffer //---- Entensions to the F# Async class to allow up to 5 paramters (not just 3) type Async with static member FromBeginEnd(arg1,arg2,arg3,arg4,beginAction,endAction,?cancelAction): Async<'T> = Async.FromBeginEnd((fun (iar,state) -> beginAction(arg1,arg2,arg3,arg4,iar,state)), endAction, ?cancelAction=cancelAction) static member FromBeginEnd(arg1,arg2,arg3,arg4,arg5,beginAction,endAction,?cancelAction): Async<'T> = Async.FromBeginEnd((fun (iar,state) -> beginAction(arg1,arg2,arg3,arg4,arg5,iar,state)), endAction, ?cancelAction=cancelAction) //---- Extensions to the Socket class to provide async SendTo and ReceiveFrom type System.Net.Sockets.Socket with member this.AsyncSendTo( buffer, offset, size, socketFlags, remoteEP ) = Async.FromBeginEnd( buffer, offset, size, socketFlags, remoteEP, this.BeginSendTo, this.EndSendTo ) member this.AsyncReceiveFrom( buffer, offset, size, socketFlags, remoteEP ) = Async.FromBeginEnd( buffer, offset, size, socketFlags, remoteEP, this.BeginReceiveFrom, (fun asyncResult -> this.EndReceiveFrom(asyncResult, remoteEP) ) ) //---- Asynchronous Ping let AsyncPing (host : IPAddress, timeout : int ) = async { let ep = IPEndPoint( host, 0 ) use socket = new Socket( AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp ) socket.SetSocketOption( SocketOptionLevel.Socket, SocketOptionName.SendTimeout, timeout ) socket.SetSocketOption( SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, timeout ) let packet = EchoMessage() let outbuffer = packet.Bytes try let! result = socket.AsyncSendTo( outbuffer, 0, outbuffer.Length, SocketFlags.None, ep ) if result <= 0 then raise (SocketException()) let epr = ref (ep :> EndPoint) let inbuffer = Array.create (outbuffer.Length + 256) 0uy let! result = socket.AsyncReceiveFrom( inbuffer, 0, inbuffer.Length, SocketFlags.None, epr ) if result <= 0 then raise (SocketException()) return inbuffer finally socket.Close() }

  Read the article

• Why does my performance increase when touching the screen?

  - by Smills

  For some reason my FPS jumps up considerably when I move my mouse around on the screen (on the emulator) while holding the left mouse button. Normally my game is very laggy, but if I touch the screen (and as long as I am moving the mouse around while touching) it goes perfectly smooth. I have tried sleeping for 20ms in the onTouchEvent, but it doesn't appear to make any difference. Here is the code I use in my onTouchEvent: // events when touching the screen public boolean onTouchEvent(MotionEvent event) { int eventaction = event.getAction(); touchX=event.getX(); touchY=event.getY(); switch (eventaction) { case MotionEvent.ACTION_DOWN: { touch=true; } break; case MotionEvent.ACTION_MOVE: { } break; case MotionEvent.ACTION_UP: { touch=false; } break; } /*try { AscentThread.sleep(20); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ return true; } In the logcat log, FPS is the current fps (average of the last 20 frames), touch is whether or not the screen is being touched (from onTouchEvent). What on earth is going on? Has anyone else had this odd behaviour before? Logcat log: 12-21 19:43:26.154: INFO/myActivity(786): FPS: 31.686569159606414 Touch: false 12-21 19:43:27.624: INFO/myActivity(786): FPS: 19.46310293212206 Touch: false 12-21 19:43:29.104: INFO/myActivity(786): FPS: 18.801202175690467 Touch: false 12-21 19:43:30.514: INFO/myActivity(786): FPS: 21.118295877408478 Touch: false 12-21 19:43:31.985: INFO/myActivity(786): FPS: 19.117397812958878 Touch: false 12-21 19:43:33.534: INFO/myActivity(786): FPS: 15.572571858239263 Touch: false 12-21 19:43:34.934: INFO/myActivity(786): FPS: 20.584119901503506 Touch: false 12-21 19:43:36.404: INFO/myActivity(786): FPS: 18.888025905454207 Touch: false 12-21 19:43:37.814: INFO/myActivity(786): FPS: 22.35722329083629 Touch: false 12-21 19:43:39.353: INFO/myActivity(786): FPS: 15.73604859775362 Touch: false 12-21 19:43:40.763: INFO/myActivity(786): FPS: 20.912449882754633 Touch: false 12-21 19:43:42.233: INFO/myActivity(786): FPS: 18.785278388997718 Touch: false 12-21 19:43:43.634: INFO/myActivity(786): FPS: 20.1357397209596 Touch: false 12-21 19:43:45.043: INFO/myActivity(786): FPS: 21.961138432007957 Touch: false 12-21 19:43:46.453: INFO/myActivity(786): FPS: 22.167196852834273 Touch: false 12-21 19:43:47.854: INFO/myActivity(786): FPS: 22.207318228024274 Touch: false 12-21 19:43:49.264: INFO/myActivity(786): FPS: 22.36980559230175 Touch: false 12-21 19:43:50.604: INFO/myActivity(786): FPS: 23.587638823252547 Touch: false 12-21 19:43:52.073: INFO/myActivity(786): FPS: 19.233902040593076 Touch: false 12-21 19:43:53.624: INFO/myActivity(786): FPS: 15.542190150440987 Touch: false 12-21 19:43:55.034: INFO/myActivity(786): FPS: 20.82290063974675 Touch: false 12-21 19:43:56.436: INFO/myActivity(786): FPS: 21.975282007207717 Touch: false 12-21 19:43:57.914: INFO/myActivity(786): FPS: 18.786927284103687 Touch: false 12-21 19:43:59.393: INFO/myActivity(786): FPS: 18.96879004217992 Touch: false 12-21 19:44:00.625: INFO/myActivity(786): FPS: 28.367566618064878 Touch: false 12-21 19:44:02.113: INFO/myActivity(786): FPS: 19.04441528684418 Touch: false 12-21 19:44:03.585: INFO/myActivity(786): FPS: 18.807837511809065 Touch: false 12-21 19:44:04.993: INFO/myActivity(786): FPS: 21.134330284993418 Touch: false 12-21 19:44:06.275: INFO/myActivity(786): FPS: 27.209688764079907 Touch: false 12-21 19:44:07.753: INFO/myActivity(786): FPS: 19.055894653261653 Touch: false 12-21 19:44:09.163: INFO/myActivity(786): FPS: 22.05422794901088 Touch: false 12-21 19:44:10.644: INFO/myActivity(786): FPS: 18.6956805300596 Touch: false 12-21 19:44:12.124: INFO/myActivity(786): FPS: 17.434180581311054 Touch: false 12-21 19:44:13.594: INFO/myActivity(786): FPS: 18.71932038510891 Touch: false 12-21 19:44:14.504: INFO/myActivity(786): FPS: 40.94571503868066 Touch: true 12-21 19:44:14.924: INFO/myActivity(786): FPS: 57.061200121138576 Touch: true 12-21 19:44:15.364: INFO/myActivity(786): FPS: 62.54377946377936 Touch: true 12-21 19:44:15.764: INFO/myActivity(786): FPS: 64.05005071818726 Touch: true 12-21 19:44:16.384: INFO/myActivity(786): FPS: 50.912951172948155 Touch: true 12-21 19:44:16.874: INFO/myActivity(786): FPS: 55.31242053078078 Touch: true 12-21 19:44:17.364: INFO/myActivity(786): FPS: 59.31625410615102 Touch: true 12-21 19:44:18.413: INFO/myActivity(786): FPS: 36.63504170925923 Touch: false 12-21 19:44:19.885: INFO/myActivity(786): FPS: 18.099130467755923 Touch: false 12-21 19:44:21.363: INFO/myActivity(786): FPS: 18.458978222946566 Touch: false 12-21 19:44:22.683: INFO/myActivity(786): FPS: 25.582179409330823 Touch: true 12-21 19:44:23.044: INFO/myActivity(786): FPS: 60.99865521942455 Touch: true 12-21 19:44:23.403: INFO/myActivity(786): FPS: 74.17873975470984 Touch: true 12-21 19:44:23.763: INFO/myActivity(786): FPS: 64.25663040460714 Touch: true 12-21 19:44:24.113: INFO/myActivity(786): FPS: 62.47483457826921 Touch: true 12-21 19:44:24.473: INFO/myActivity(786): FPS: 65.27969529547072 Touch: true 12-21 19:44:24.825: INFO/myActivity(786): FPS: 67.84743115273311 Touch: true 12-21 19:44:25.173: INFO/myActivity(786): FPS: 73.50854551357706 Touch: true 12-21 19:44:25.523: INFO/myActivity(786): FPS: 70.46432534585368 Touch: true 12-21 19:44:25.873: INFO/myActivity(786): FPS: 69.04076953445896 Touch: true

  Read the article

• Emulating old-school sprite flickering (theory and concept)

  - by Jeffrey Kern

  I'm trying to develop an oldschool NES-style video game, with sprite flickering and graphical slowdown. I've been thinking of what type of logic I should use to enable such effects. I have to consider the following restrictions if I want to go old-school NES style: No more than 64 sprites on the screen at a time No more than 8 sprites per scanline, or for each line on the Y axis If there is too much action going on the screen, the system freezes the image for a frame to let the processor catch up with the action From what I've read up, if there were more than 64 sprites on the screen, the developer would only draw high-priority sprites while ignoring low-priority ones. They could also alternate, drawing each even numbered sprite on opposite frames from odd numbered ones. The scanline issue is interesting. From my testing, it is impossible to get good speed on the XBOX 360 XNA framework by drawing sprites pixel-by-pixel, like the NES did. This is why in old-school games, if there were too many sprites on a single line, some would appear if they were cut in half. For all purposes for this project, I'm making scanlines be 8 pixels tall, and grouping the sprites together per scanline by their Y positioning. So, dumbed down I need to come up with a solution that.... 64 sprites on screen at once 8 sprites per 'scanline' Can draw sprites based on priority Can alternate between sprites per frame Emulate slowdown Here is my current theory First and foremost, a fundamental idea I came up with is addressing sprite priority. Assuming values between 0-255 (0 being low), I can assign sprites priority levels, for instance: 0 to 63 being low 63 to 127 being medium 128 to 191 being high 192 to 255 being maximum Within my data files, I can assign each sprite to be a certain priority. When the parent object is created, the sprite would randomly get assigned a number between its designated range. I would then draw sprites in order from high to low, with the end goal of drawing every sprite. Now, when a sprite gets drawn in a frame, I would then randomly generate it a new priority value within its initial priority level. However, if a sprite doesn't get drawn in a frame, I could add 32 to its current priority. For example, if the system can only draw sprites down to a priority level of 135, a sprite with an initial priority of 45 could then be drawn after 3 frames of not being drawn (45+32+32+32=141) This would, in theory, allow sprites to alternate frames, allow priority levels, and limit sprites to 64 per screen. Now, the interesting question is how do I limit sprites to only 8 per scanline? I'm thinking that if I'm sorting the sprites high-priority to low-priority, iterate through the loop until I've hit 64 sprites drawn. However, I shouldn't just take the first 64 sprites in the list. Before drawing each sprite, I could check to see how many sprites were drawn in it's respective scanline via counter variables . For example: Y-values between 0 to 7 belong to Scanline 0, scanlineCount[0] = 0 Y-values between 8 to 15 belong to Scanline 1, scanlineCount[1] = 0 etc. I could reset the values per scanline for every frame drawn. While going down the sprite list, add 1 to the scanline's respective counter if a sprite gets drawn in that scanline. If it equals 8, don't draw that sprite and go to the sprite with the next lowest priority. SLOWDOWN The last thing I need to do is emulate slowdown. My initial idea was that if I'm drawing 64 sprites per frame and there's still more sprites that need to be drawn, I could pause the rendering by 16ms or so. However, in the NES games I've played, sometimes there's slowdown if there's not any sprite flickering going on whereas the game moves beautifully even if there is some sprite flickering. Perhaps give a value to each object that uses sprites on the screen (like the priority values above), and if the combined values of all objects w/ sprites surpass a threshold, introduce the sprite flickering? IN CONCLUSION... Does everything I wrote actually sound legitimate and could work, or is it a pipe dream? What improvements can you all possibly think with this game programming theory of mine?

  Read the article

• Strange WCF Error - IIS hosted - context being aborted

  - by RandomNoob

  I have a WCF service that does some document conversions and returns the document to the caller. When developing locally on my local dev server, the service is hosted on ASP.NET Development server, a console application invokes the operation and executes within seconds. When I host the service in IIS via a .svc file, two of the documents work correctly, the third one bombs out, it begins to construct the word document using the OpenXml Sdk, but then just dies. I think this has something to do with IIS, but I cannot put my finger on it. There are a total of three types of documents I generate. In a nutshell this is how it works SQL 2005 DB/IBM DB2 - WCF Service written by other developer to expose data. This service only has one endpoint using basicHttpBinding My Service invokes his service, gets the relevant data, uses the Open Xml Sdk to generate a Microsoft Word Document, saves it on a server and returns the path to the user. The word documents are no bigger than 100KB. I am also using basicHttpBinding although I have tried wsHttpBinding with the same results. What is amazing is how fast it is locally, and even more that two of the documents generate just fine, its the third document type that refuses to work. To the error message: An error occured while receiving the HTTP Response to http://myservername.mydomain.inc/MyService/Service.Svc. This could be due to the service endpoint binding not using the HTTP Protocol. This could also be due to an HTTP request context being aborted by the server (possibly due to the server shutting down). See server logs for more details. I have spent the last 2 days trying to figure out what is going on, I have tried everything, including changing the maxReceivedMessageSize, maxBufferSize, maxBufferPoolSize, etc etc to large values, I even included: <httpRuntime maxRequestLength="2097151" executionTimeout="120"/> To see maybe if IIS was choking because of that. Programatically the service does nothing special, it just constructs the word documents from the data using the Open Xml Sdk and like I said, locally all 3 documents work when invoked via a console app running locally on the asp.net dev server, i.e. http://localhost:3332/myService.svc When I host it on IIS and I try to get a Windows Forms application to invoke it, I get the error. I know you will ask for logs, so yes I have logging enabled on my Host. And there is no error in the logs, I am logging everything. Basically I invoke two service operations written by another developer. MyOperation calls - HisOperation1 and then HisOperation2, both of those calls give me complex types. I am going to look at his code tomorrow, because he is using LINQ2SQL and there may be some funny business going on there. He is using a variety of collections etc, but the fact that I can run the exact same document, lets call it "Document 3" within seconds when the service is being hosted locally on ASP WebDev Server is what is most odd, why would it run on scaled down Cassini and blow up on IIS? From the log it seems, after calling HisOperation1 and HisOperation2 the service just goes into la-la land dies, there is a application pool (w3wp.exe) error in the Windows Event Log. Faulting application w3wp.exe, version 6.0.3790.1830, stamp 42435be1, faulting module kernel32.dll, version 5.2.3790.3311, stamp 49c5225e, debug? 0, fault address 0x00015dfa. It's classified as .NET 2.0 Runtime error. Any help is appreciated, the lack of sleep is getting to me. Help me Obi-Wan Kenobi, you're my only hope.

  Read the article

• ASP.NET Membership API not working on Win2008 server/IIS7

  - by Program.X

  I have a very odd problem. I have a web app that uses the .NET Membership API to provide login functionality. This works fine on my local dev machine, using WebDev 4.0 server. I'm using .NET 4.0 with some URL Rewriting, but not on the pages where login is required. I have a Windows Server 2008 with IIS7 However, the Membership API seemingly does not work on the server. I have set up remote debugging and the LoginUser.LoggedIn event of the LoginUser control gets fired okay, but the MembershipUser is null. I get no answer about the username/password being invalid so it seems to be recognising it. If I enter an invalid username/password, I get an invalid username/password response. Some code, if it helps: <asp:ValidationSummary ID="LoginUserValidationSummary" runat="server" CssClass="validation-error-list" ValidationGroup="LoginUserValidationGroup"/> <div class="accountInfo"> <fieldset class="login"> <legend>Account Information</legend> <p> <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">Username:</asp:Label> <asp:TextBox ID="UserName" runat="server" CssClass="textEntry"></asp:TextBox> <asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName" CssClass="validation-error" Display="Dynamic" ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator> </p> <p> <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">Password:</asp:Label> <asp:TextBox ID="Password" runat="server" CssClass="passwordEntry" TextMode="Password"></asp:TextBox> <asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password" CssClass="validation-error" Display="Dynamic" ErrorMessage="Password is required." ToolTip="Password is required." ValidationGroup="LoginUserValidationGroup">*</asp:RequiredFieldValidator> </p> <p> <asp:CheckBox ID="RememberMe" runat="server"/> <asp:Label ID="RememberMeLabel" runat="server" AssociatedControlID="RememberMe" CssClass="inline">Keep me logged in</asp:Label> </p> </fieldset> <p class="login-action"> <asp:Button ID="LoginButton" runat="server" CommandName="Login" CssClass="submitButton" Text="Log In" ValidationGroup="LoginUserValidationGroup"/> </p> and the code behind: protected void Page_Load(object sender, EventArgs e) { LoginUser.LoginError += new EventHandler(LoginUser_LoginError); LoginUser.LoggedIn += new EventHandler(LoginUser_LoggedIn); } void LoginUser_LoggedIn(object sender, EventArgs e) { // this code gets run so it appears logins work Roles.DeleteCookie(); // this behaviour has been removed for testing - no difference } void LoginUser_LoginError(object sender, EventArgs e) { HtmlGenericControl htmlGenericControl = LoginUser.FindControl("errorMessageSpan") as HtmlGenericControl; if (htmlGenericControl != null) htmlGenericControl.Visible = true; } I have "Fiddled" with the Login form reponse and I get the following Cookie-Set headers: Set-Cookie: ASP.NET_SessionId=lpyyiyjw45jjtuav1gdu4jmg; path=/; HttpOnly Set-Cookie: .ASPXAUTH=A7AE08E071DD20872D6BBBAD9167A709DEE55B352283A7F91E1066FFB1529E5C61FCEDC86E558CEA1A837E79640BE88D1F65F14FA8434AA86407DA3AEED575E0649A1AC319752FBCD39B2A4669B0F869; path=/; HttpOnly Set-Cookie: .ASPXROLES=; expires=Mon, 11-Oct-1999 23:00:00 GMT; path=/; HttpOnly I don't know what is useful here because it is obviously encrypted but I find the .APXROLES cookie having no value interesting. It seems to fail to register the cookie, but passes authentication

  Read the article

< Previous Page | 182 183 184 185 186 187 188 189 190 191 192 193  | Next Page >