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  • Should I dispose GDI+ object before its creation?

    - by serhio
    Should I dispose GDI+ object before its creation? Is recommended to always Dispose GDI+ object after using it. by e.g. Pen p = new Pen(Color.Green); // use 'p' p.Dispose(); now, if I have this situation: Pen p = new Pen(Color.Green); // use green 'p' p = new Pen(Color.Red); // Should I Dispose my 'p' first? // use red 'p' p.Dispose();

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  • Animate a e.Graphics.DrawLine with arrowhead

    - by Fer
    I need to "animate" an arrow. It can go in any direction (up, down, left, right and diagonals) and the arrowhead will be at the end. It needs to appear as if it is growing from orgin to the end. To make matters more complicated it has to be in a user control so it is possible to add to the controls collection in the forms and remove it to delete it from the screen, and its background is really transparent (no color.transparent) so i can't paint the background to "clear" the previous line. I have it static already (drawn from origin to end) but i can't animate it. I tried to add a timer in the user control but I fail to get a correct algorithm to calculate the intermediate ends of the line while it is growing. Any help would be appreciated. Thanks

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  • cocos2d - how to draw a bottle sprite with dynamically changing water level

    - by Oliver
    I am trying to draw a (2d) sprite in cocos2d showing a bottle. The bottle shall be able to have a dynamic water level (i.e. the amount of water in the bottle can change over the lifetime of the sprite). I am wondering how to do this. I currently have a PNG file of the empty bottle. I adjusted the alpha channel of that PNG so when rendering the sprite I can draw a blue rectangle and render the bottle texture over it. That will give the impression of the water being inside the bottle. However, the bottle's shape is not a rectangle itself of course, so the water can be seen out of the bounds of the bottle. I can change the bottle image in a way that only the bottle itself is transparent and set the "outside world" to an opaque color & alpha channel value, but that again prevents the "world background" to be visible in that area. I simply don't have a clue how to realize this in a sane manner. Do I really have to read every pixel of the bottle image, identify which pixel is "inside" of the bottle and then draw the water pixel by pixel? There must be an easier way, right? ;) Any best practices for these kinds of tasks? edit: see picture below, to make somewhat clearer, what I am talking about ;) http://i47.tinypic.com/10rqww0.png

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  • BlackBerry - Cropping image

    - by rupesh
    Hi all i want to crop a part of Image ,for that i am using following code: int x=20; int y=50; int [] rgbdata=new int[(0+width-x+height-y)* (image.getWidth())]; image.getARGB(rgbdata, 0, image.getWidth(), x, y, width, height); cropedImage=new Bitmap(image.getWidth(),image.getWidth()); cropedImage.setARGB(rgbdata, 0,image.getWidth(), 80,80, width, height); x an y are the position from where the cropping will be done in the rectangular form. but it is not working can any one help me out please. any sample code will work for me. its urgent. thanks in advance

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  • xaml shapes - relative to canvas size

    - by taglius
    I have the need to draw shapes in XAML that are always relative to the container window/canvas size. For example, I need a window to show a 3x3 grid on it, where the grid always splits the window into 3 equal parts. Can I create lines that are bound to 1/3 the width of the grid? thank you

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  • Clip a 4:3 image in WPF with a circle

    - by reckoner
    I am trying to clip a 4:3 image with a circle within a grid control. I need the circle clip to reveal the image from the middle in a perfect circle. See below. The circle should dynamically re-size with the image. I have tried Canvas.Clip and Ellipse+VisualBrush without achieving the correct behavior. Thanks!

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  • Resizing gives me to heavy image

    - by phenevo
    Hi, I'm resizing jpeg 1200x900 ,556kb by method: public static Image ResizeImage(Image imgToResize, int height) //height=400 { int destWidth; int destHeight; int sourceWidth = imgToResize.Width; int sourceHeight = imgToResize.Height; float nPercent = 0; float nPercentH = 0; nPercentH = ((float)height / (float)sourceHeight); nPercent = nPercentH; destWidth = (int)(sourceWidth * nPercent); destHeight = height; Bitmap b = new Bitmap(destWidth, destHeight); Graphics g = Graphics.FromImage((Image)b); g.InterpolationMode = InterpolationMode.HighQualityBicubic; g.DrawImage(imgToResize, 0, 0, destWidth, destHeight); g.Dispose(); return b; } gives me 555kb 533x400 jpeg. Why this photo is so heavy. For photo jpeg 2111kb 2156x1571 I get 556kb 533x400 jpeg Why in first case is so terrible !

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  • when is the right time to draw

    - by stupid_idiot
    hi i just finished essential part of my own personal 2d engine in c++ and i'm kinda deciding how to complete the part where it is actually supposed to display everything on the screen, namely when do I call that function which does the job. I don't have much idea of how does the graphic card work, my biggest experience is calling bios graphic services to write some stuff on the screen. Could you give me a hint on this pls? Or maybe some keywords I should try to google?

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  • Unable to format disk: 'The system cannot find the file specified'

    - by ACarter
    I have a USB flash drive, which I may have mucked up, so I used DISKPART's CLEAN to clean it up. I created a simple volume, and tried to format it. (This is all using Windows' disk management.) I was told The system cannot find the file specified. So I tried using DISKPART (as an admin): DISKPART select volume 9 Volume 9 is the selected volume. DISKPART format recommended DiskPart has encountered an error: The system cannot find the file specified. See the System Event Log for more information. DISKPART As you can see, no luck. When I plug the drive in, the computer makes a beep noise as though it has recognised something, but nothing appears in My Computer How can I format the disk so I can use it again?

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  • Running a scheduled task as SYSTEM with console window open

    - by raoulsson
    I am auto creating scheduled tasks with this line within a batch windows script: schtasks /Create /RU SYSTEM /RP SYSTEM /TN startup-task-%%i /TR %SPEEDWAY_DIR%\%TARGET_DIR%%%i\%STARTUPFILE% /SC HOURLY /MO 1 /ST 17:%%i1:00 I wanted to avoid using specific user credentials and thus decided to use SYSTEM. Now, when checking in the taskmanagers process list or, even better, directly with the C:\> schtasks command itself, all is working well, the tasks are running as intended. However in this particular case I would like to have an open console window where I can see the log flying by. I know I could use C:\> tail -f thelogfile.log if I installed e.g. cygwin (on all machines) or some proprietary tools like Baretail on Windows. But since I only switch to these machines in case of trouble, I would prefer to start the scheduled task in such a way that every user immediately sees the log. Any chance? Thanks!

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  • Good book for a software developer doing part-time (Linux) system administration work

    - by Tony Meyer
    In many smaller organisations, developers often end up doing some system administration work (for obvious reasons). A lot of the time, they have great developer skills, but few system administration skills (perhaps all self-taught), and so have to learn as they go, which is fairly inefficient. Are there canonical (or simply great) books that would help in this situation? More advanced than just using a shell (presumably a developer can do that), but not aimed at someone that hopes to spend many years doing this work. Ideally, something fairly generic (although specific to a distribution would be OK), covering databases, networking, general maintenance, etc, not just one specific task. For the most part, I'm interested in shell-based work (i.e. no GUI installed), although if there's something outstanding I'm missing, please point it out. (As an analogy, replace "system administration" with C, and I'd want K&R, with C++ and I'd want Meyers' "Effective C++").

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  • PostgreSQL timezone does not match system timezone

    - by Martin C.
    I have several PostgreSQL 9.2 installations where the timezone used by PostgreSQL is GMT, despite the entire system being "Europe/Vienna". I double-checked that postgresql.conf does not contain timezone setting, so according to the documentation it should fallback to the system's timezone. However, # su -s /bin/bash postgres -c "psql mydb" mydb=# show timezone; TimeZone ---------- GMT (1 row) mydb=# select now(); now ------------------------------- 2013-11-12 08:14:21.697622+00 (1 row) Any hints, where the GMT timezone could come from? The system user does not have TZ set and the /etc/timezone and /etc/timeinfo seem to be configured correctly. # cat /etc/timezone Europe/Vienna # date Tue Nov 12 09:15:42 CET 2013 Any hints are appreciated, thanks in advance!

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  • New XEN Server, Intel i7, Errors were encountered while processing: xen-linux-system-amd64

    - by Sheldon
    I have just got a new machine to run XEN VM's on, it has an Intel i7 processor: - Intel Haswell Core i7-4790 3.6GHz 8MB LGA1150 I have setup the host with the current 6.2.0 I have set up a new Debian 7 64bit VM and any package I try and run fails with the following errors: Errors were encountered while processing: xen-utils-common xen-utils-4.1 xen-system-amd64 xen-linux-system-3.2.0-4-amd64 xen-linux-system-amd64 E: Sub-process /usr/bin/dpkg returned an error code (1) Excuse my noob-ness but should it even be running an AMD package ? Any ideas on how to fix this ? Thanks

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  • I reinstalled OS X and the system was the same as before

    - by slhck
    Strange thing happened. I want so sell my old Macbook and therefore used a disk image of the Snow Leopard DVD that I restored onto an external drive. I booted off the drive and went through the installation steps. Now I really would like to perform "archive and install", as there might be some files that I need later, but I didn't see the option. The only options for installation I had, were, including others, optional printer drivers and Rosetta. So I just clicked through and I wasn't given any other option. After about 45 minutes, my system booted again, and voila, there was my old system. Nothing changed. How should I proceed to actually reset the system? All I have is that Snow Leopard DVD image.

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  • Running a scheduled task as SYSTEM with console window open

    - by raoulsson
    I am auto creating scheduled tasks with this line within a batch windows script: schtasks /Create /RU SYSTEM /RP SYSTEM /TN startup-task-%%i /TR %SPEEDWAY_DIR%\%TARGET_DIR%%%i\%STARTUPFILE% /SC HOURLY /MO 1 /ST 17:%%i1:00 I wanted to avoid using specific user credentials and thus decided to use SYSTEM. Now, when checking in the taskmanagers process list or, even better, directly with the C:\> schtasks command itself, all is working well, the tasks are running as intended. However in this particular case I would like to have an open console window where I can see the log flying by. I know I could use C:\> tail -f thelogfile.log if I installed e.g. cygwin (on all machines) or some proprietary tools like Baretail on Windows. But since I only switch to these machines in case of trouble, I would prefer to start the scheduled task in such a way that every user immediately sees the log. Any chance? Thanks!

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  • XP Computer won't start (Missing/Corrupt 'System' file) - recently added new hard drive

    - by qwerty2
    Hi all, Pulling my hair out here. I recently replaced my D: 1TB drive (not a system drive) with a new 1.5TB drive. I loaded Windows XP, formatted the new drive and it was showing as working fine, alongside my C: windows system drive. I restart my machine and all of a sudden, Windows doesn't load and instead I get: "Windows could not start beause the following file is missing or corrupt" \WINDOWS\SYSTEM32\CONFIG\SYSTEM I don't have the original XP installation CD, although I do have another copy of XP, when I try and boot to it, I get the blue 'STOP' screen after it attempts to load the setup utlity for about a minute. Can someone please help? When I set up my new hard drive as a primary partition did this someone screw up my C: hard drive? Did it perhaps unmount it somehow? Any help would be fantastic. Thanks

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  • Best practice for system clock sync on KVM host

    - by Tauren
    I have an Ubuntu 9.10 server running as a KVM host with ntpd installed on it. The host system has the correct system time. At the moment I only have a single KVM guest, also Ubuntu 9.10 server. I do not have ntpd installed on it, and I just discovered the clock is about 6 minutes slow. It wasn't that way when it was installed about a month ago. I thought that I only needed to keep the host clock synchronized and that the guests used the host clock. But maybe that is a memory from using OpenVZ. I believe the reasoning was related to only the host could modify the physical system clock. Is running ntpd on both the host and all the guests the correct thing to do? Or is there something else that is preferred? How should I keep the guest clocks in sync?

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  • Check integrity of Debian system after possible rootkit?

    - by artvolk
    Good day! I have a system that was possible rootkited (the IRC bot was installed and +ai attributes were set on /usr/bin, /usr/sbin, /bin, /sbin). The IRC bots were deleted and system was upgraded to 5.0.4 from 4.0. I'm afraid that something in folders I've mentioned was modified. I can't reinstall the box, so if there any way to check integrity of the system? P.S. I have already checked rkhunter and chrootkit. Thanks in advance!

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  • Where can I find "system proxy settings"?

    - by Rookie
    Where are these system proxy settings? I noticed my connection has been slow for a while, then I checked the connection settings and was surprised there were set a proxy, but I cant see what exactly it is using. Where can I check which IP it was routing the connection for me ? Here is what I saw from Firefox (12.0) options: http://img12.imageshack.us/img12/4370/sysproxy.png As far as I can remember, it has always been "no proxy" and not "system proxy". Unless new firefox version has set that "system proxy" to default?

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  • System Reserved Partition has Drive Letter After Applying a WIM Image with ImageX

    - by user1291332
    I have installed Windows Vista on a computer using ImageX from WinPE. I followed the instructions here for partitioning the hard drive, creating a 300 MB system partition and using the rest of the drive for a Windows partition. The install has worked perfectly apart from the fact that the system partition has been assigned the drive letter C: and the Windows has been assigned the drive letter D:. I would like the system drive to have no letter and the Windows partition to have the drive letter C:. I think I have managed to figure out why it is doing this. See my answer below. Can anyone confirm this?

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  • wbadmin incremental system state backup

    - by user74513
    I am doing system state backups on a Windows Server 2008 R2 Enterprise (Service Pack 1) machine and expected the backups after the first one to be incremental. However with each backup a new directory with vhd files are created and the vhd files are almost the same size as the with the first backup. So the backups does not seem to be incremental. I used the following command to do the backup: wbadmin start systemstatebackup -backupTarget:f: I played around with the settings under "Configure Performance Settings" in the Windows Server Backup plugin in Server Manager but according to the description at the top of the dialog these settings are not applied to system state backups. Are there any settings available for wbadmin system state backup to make the backups incremental?

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  • Installation is forbidden by system policy

    - by Frost
    Note: I'm posting this here on Superuser as I think the issue is more related to the Windows Installer than the game itself. My friend is having trouble installing Company of Heroes and CoH: Opposing fronts under Windows 7. A couple of percent into the installation, when the C/C++ runtime is being installed, the install fails with the following message: An error occured while installing the Windows Installer package "C:\Users\...\AppData\Local\Temp\...\...\vcredist.msi". Error code 10212:00000659: MsiInstallProductW returned 00000659: This installation is forbidden by system policy. Contact your system administrator. We have tried: Making sure that any previous installations have been completely removed, including searching and deleting any files/folders/registry entries matching "THQ" (the publisher) and "Relic" (the developer). Installing into a brand new user account Running Setup.exe as administrator Running Compatibility check for Setup.exe, which suggested Windows XP but failed when trying those settings out Does anyone know what might be the cause of the system policy error?

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  • Opening tabs in Google Chrome crashes my system

    - by David Golding
    When I open tabs to sites such as BBC iPlayer I have about a 4/5 chance that it will crash my entire system. The system can remain unresponsive for up to 30 mins or as little as 2. This has only happened recently and is becoming very annoying as the rest of my system can be running perfectly fine then I open a tab and it hangs. It isn't always flash media webpages so I have ruled that out and I have check my addons opened them in incognito mode, done all the usual error checking.

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  • wbadmin incremental system state backup

    - by user74513
    I am doing system state backups on a Windows Server 2008 R2 Enterprise (Service Pack 1) machine and expected the backups after the first one to be incremental. However with each backup a new directory with vhd files are created and the vhd files are almost the same size as the with the first backup. So the backups does not seem to be incremental. I used the following command to do the backup: wbadmin start systemstatebackup -backupTarget:f: I played around with the settings under "Configure Performance Settings" in the Windows Server Backup plugin in Server Manager but according to the description at the top of the dialog these settings are not applied to system state backups. Are there any settings available for wbadmin system state backup to make the backups incremental?

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  • Suggestions for a SOHO/Home Asterisk system

    - by James
    I would like to buy a small embedded system that runs Linux and Asterisk. I would like two FXS ports ( to plug analogue phones into ) and one FXO port ( to plug in to my real line to allow access to the POTS ). I would like it to have a USB port to hold storage for voicemail. I really want it for home use so I would like it to be under £150 ( say $250 ), given that you can buy ADSL routers for around this much can any of them be made to run Linux and Asterisk? I don't want a PC as the power usage would be too high. I am looking for something like this ASDL router but open and able to run Asterisk or another open PBX. At worst I would like a box which had one FXO and two FXS and just made them completely available over IP to a full Asterisk system on a low power Atom system.

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