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  • Java NIO (Netty): Exceptionhandling in Downstream Hanlders/Chain

    - by Tom
    Hello Experts, could someone please explain to me, how in netty "Downstream Exceptions" are handeled? According to the javadoc there are no Downstream exceptions: http://docs.jboss.org/netty/3.1/api/org/jboss/netty/channel/ExceptionEvent.html Given the case that in one of my downstream handlers an exception occures OR in the I/0 Thread itself, where can these errors be catched and handeled? thank you very much tom

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  • How to create platform independent 3D video on 3D TV via HDMI 1.4?

    - by artif
    I am writing a real-time, interactive 3D visualization program and at each point in the program, I can compute 2 images (bitmaps) that are meant to look 3D together by means of stereoscopy. How do I get my program to display the image pairs such that they look 3D on a 3D TV? Is there a platform independent way of accomplishing it? (By platform I mean independent of GPU brand, operating system, 3D TV vendor, etc.) If not, which is preferable-- to lock in by GPU, OS, or 3D TV? I suppose I need to be using an HDMI 1.4 cable with the 3D TV? HDMI 1.4 can encode stereoscopy via side-by-side method. But how do I send such an encoded signal to the monitor? What kind of libraries do I use for this sort of thing? Windows DirectShow? If DirectShow is correct, is there a cross platform equivalent available? If anyone asks, yes I have seen this question: http://stackoverflow.com/questions/2811350/generating-3d-tv-stereoscopic-output-programmatically. However, correct me if I am wrong, it does not appear to be what I'm looking for. I do not have an OpenGL or Direct3D program that generates polygons, for which a Nvidia card can do ad-hoc impromptu stereoscopy simply by rendering the scene from 2 slightly offset points of view and then displaying those 2 images on the monitor-- my program already has those image pairs and needs to display them (and they are not the result of rendering polygons). Btw, I have never done any major multimedia programming before and know very little about HDMI, Direct Show, 3D TVs, etc so pardon me if any parts of this question did not make any sense at all.

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  • ASP.NET Compiled vs Uncompiled DB qualifiers

    - by rlb.usa
    We have an ASP.NET application that uses SQL statements, where table names are unqualified. When compiled, it works fine, but when uncompiled, it complains and errors out, saying these tables dont' exist. (Qualified name looks like Select * from MyDatabase.mySchema.MyTable ; Unqualified like Select * from MyTable) If you try these queries on the database, by yourself, it will take only the qualified names. What's going on? I thought Compiled vs Uncompiled apps should perform the same way codewise.

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  • Calculate the retrieved rows in database Visual C#

    - by Tanya Lertwichaiworawit
    I am new in Visual C# and would want to know how to calculate the retrieved data from a database. Using the above GUI, when "Calculate" is click, the program will display the number of students in textBox1, and the average GPA of all students in textBox2. Here is my database table "Students": I was able to display the number of students but I'm still confused to how I can calculate the average GPA Here's my code: private void button1_Click(object sender, EventArgs e) { string connection = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Database1.accdb"; OleDbConnection connect = new OleDbConnection(connection); string sql = "SELECT * FROM Students"; connect.Open(); OleDbCommand command = new OleDbCommand(sql, connect); DataSet data = new DataSet(); OleDbDataAdapter adapter = new OleDbDataAdapter(command); adapter.Fill(data, "Students"); textBox1.Text = data.Tables["Students"].Rows.Count.ToString(); double gpa; for (int i = 0; i < data.Tables["Students"].Rows.Count; i++) { gpa = Convert.ToDouble(data.Tables["Students"].Rows[i][2]); } connect.Close(); }

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  • jQuery "growl-like" effect in VB.net

    - by StealthRT
    Hey all, i have made a simple form that mimiks the jQuery "GROWL" effect seen here http://www.sandbox.timbenniks.com/projects/jquery-notice/ However, i have ran into a problem. If i have more than one call to the form to display a "Growl" then it just refreshes the same form with whatever call i send it. In other words, i can only display one form at a time instead of having one drop down and a new one appear above it. Here is my simple form code for the "GROWL" form: Public Class msgWindow Public howLong As Integer Public theType As String Private loading As Boolean Protected Overrides Sub OnPaint(ByVal pe As System.Windows.Forms.PaintEventArgs) Dim pn As New Pen(Color.DarkGreen) If theType = "OK" Then pn.Color = Color.DarkGreen ElseIf theType = "ERR" Then pn.Color = Color.DarkRed Else pn.Color = Color.DarkOrange End If pn.Width = 2 pe.Graphics.DrawRectangle(pn, 0, 0, Me.Width, Me.Height) pn = Nothing End Sub Public Sub showMessageBox(ByVal typeOfBox As String, ByVal theMessage As String) Me.Opacity = 0 Me.Show() Me.SetDesktopLocation(My.Computer.Screen.WorkingArea.Width - 350, 15) Me.loading = True theType = typeOfBox lblSaying.Text = theMessage If typeOfBox = "OK" Then Me.BackColor = Color.FromArgb(192, 255, 192) ElseIf typeOfBox = "ERR" Then Me.BackColor = Color.FromArgb(255, 192, 192) Else Me.BackColor = Color.FromArgb(255, 255, 192) End If If Len(theMessage) <= 30 Then howLong = 4000 ElseIf Len(theMessage) >= 31 And Len(theMessage) <= 80 Then howLong = 7000 ElseIf Len(theMessage) >= 81 And Len(theMessage) <= 100 Then howLong = 12000 Else howLong = 17000 End If Me.opacityTimer.Start() End Sub Private Sub opacityTimer_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles opacityTimer.Tick If Me.loading Then Me.Opacity += 0.07 If Me.Opacity >= 0.8 Then Me.opacityTimer.Stop() Me.opacityTimer.Dispose() Pause(howLong) Me.loading = False Me.opacityTimer.Start() End If Else Me.Opacity -= 0.08 If Me.Opacity <= 0 Then Me.opacityTimer.Stop() Me.Close() End If End If End Sub Public Sub Pause(ByVal Milliseconds As Integer) Dim dTimer As Date dTimer = Now.AddMilliseconds(Milliseconds) Do While dTimer > Now Application.DoEvents() Loop End Sub End Class I call the form by this simple call: Call msgWindow.showMessageBox("OK", "Finished searching images.") Does anyone know a way where i can have the same setup but would allow me to add any number of forms without refreshing the same form over and over again? Like always, any help would be great! :) David

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  • Flex builder error

    - by Anoop
    My flex builder suddenly stopped highlighting compile time errors. Its also not giving any code completion suggestion, even after pressing ctrl+Space. What could be the possible reasons? Regards, PK

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  • Destructor - does it get called if the app crashes

    - by Antonio Nakic Alfirevic
    Does a destructor get called if the app crashes? If it's an unhandled exception I'm guessing it does, but what about more serious errors, or something like a user killing the application process? And a few more potentially dumb questions: what happens to all the objects in an app when the app exits and all finalizers have been executed - do the objects get garbage collected or are they somehow all "unloaded" with the process or appdomain? is the garbage collector part of each application (runs in the same process) or is it independent?

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  • accessing a method from a button within a class?

    - by flo
    #import "GameObject.h" #import "Definitions.h" @implementation GameObject @synthesize owner; @synthesize state; @synthesize mirrored; @synthesize button; @synthesize switcher; - (id) init { if ( self = [super init] ) { [self setOwner: EmptyField]; button = [UIButton buttonWithType:UIButtonTypeCustom]; [self setSwitcher: FALSE]; } return self; } - (UIButton*) display{ button.frame = CGRectMake(0, 0, GO_Width, GO_Height); [button setBackgroundImage:[UIImage imageNamed:BlueStone] forState:UIControlStateNormal]; [button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside]; return button; } -(void)buttonPressed:(id) sender { //... } } - (void) dealloc { [super dealloc]; } @end Hi! i would like to know if the above is possible somehow within a class (in my case it is called GameObject) or if i HAVE to have the button call a methode in the viewcontroller... the above results with the app crashing. i would call display within a loop on the viewcontroller and id like to change some of the GameObjects instance variables within buttonPressed. Also id like to change some other stuff by calling some other methods from within buttonPressed but i think that will be the lesser of my problems ;) also id like to know how i can pass some variables to the buttonPressed method... cant find it anywhere :( help on this one would be much appreciated ;) thanks flo

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  • missing ';' before namespace when using boost 1.4.2

    - by Adam Haile
    Working on moving some C++ code from Linux over to Windows. The code uses boost 1.4.2, however it keeps failing out on building the boost modules. Basically, every boost hpp file that happens to contain "namespace boost" errors with: error C2143: syntax error : missing ';' before 'namespace' Any idea what could be causing this?

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  • How can I specify that Doctrine must use a mysqli-connection

    - by murze
    Hi, while executing a long script that uses Doctrine to access the db, I get an error 2006 server has gone away. I've already solved this problem on a website that doens't use Doctrine. The solution there was to use mysqli instead of the normal mysql driver. How can i tell Doctrine to use a mysqli-driver in order to avoid 2006-errors? Thanks!

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  • run wxHaskell on other machine

    - by snorlaks
    Hello, I've compiled haskell program which uses wxHaskell library, now I would like to know how to make it run on other machines which doesn't have wxHaskell installed. Of course I can see errors and I can copy dlls written in output and copy them to that machine but what is professioal sollution, can I write any installer or something like that? thanks for help

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  • JFrame is not acting as expected!

    - by DasWood
    This is my first time using a JFrame. I can't get the window to display the text areas I've nested inside the JFrame. I am trying to get the text field with my name in it to display above the tabulated results, which I have omitted the formatting for until I can get the JFrame to work. public void printResults(String[] names, int[] temp, int[][] scores, float[] averages, char[] letters){ JTextArea outarea= new JTextArea(5,20); JTextArea name = new JTextArea(5,20); Font font = new Font("Tahoma", Font.BOLD, 48); name.setFont(font); name.setText("Made By Durka Durka"); JFrame window = new JFrame(); window.getContentPane().add(name); window.getContentPane().add(outarea); window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); window.pack(); window.getContentPane().setVisible(true) String out = "twat"; outarea.setText(out); //JOptionPane.showMessageDialog(null,window); }

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  • Use XML Layout to contain a simple drawing

    - by user329999
    I would like to create a simple drawing (lines, circles, squares, etc...) but I'm having difficulty figuring out the best way to do this. The drawing would need to be scaled to fit the display since the size is indirectly specified by the user (like in a CAD application). Also, I don't want to take up the entire display, leaving room for some controls (buttons, etc). I would pass the data to describe the drawing. Here's how I imagine it would work. I create an XML layout that contains something that holds the drawing (ImageView, BitmapDrawable, ShapeDrawable, ...??? not sure exactly what). Then in my Activity I would load the main XML and obtain the resource for the control that holds the drawing. I would then draw to a bitmap. Once the bitmap was completed I would load it into the control that is to hold the drawing. Somewhere along this path it would be scaled to fill the entire area allocated for the drawing in the XML layout. I don't know if my approach is the way to do this or what classes to use. I read the http://developer.android.com/guide/topics/graphics/2d-graphics.html documentation, but it's not helping me with an example. The examples I do find leave me with hints, but nothing concrete enough to do what I want, especially when it comes to scaling, using XML and/or having other controls. Also, there seems to be no good documentation on the design of the 2D drawing system in a more conceptual manner, so it makes what I read difficult to put into any useful context. Any hints on what classes would be useful and/or a good example any other reading materials? Thanks

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  • Code Analysis In Python

    - by Jerub
    What tools are good to use for code analysis in python? I have a large source repository split across multiple projects, and I would like to be able to run tools across the directories to see details like Cyclomatic Complexity, and perhaps be able to spot errors using static analysis. Ideally, I would like to be able to produce a report about the health of the source code, so we can spot problem areas that need to be addressed.

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  • MIME/IMF error codes?

    - by hack.augusto
    I need to write php code to identify common e-mail errors, like "inbox full" or specially "invalid email name" from email messages, because we need to clear our databases from nonexistent emails. I'm looking the MIME and IMF formats but I didn't find any kind of standard error code, does it exist?

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  • Calculating a date when a date has been chosen by the number of days

    - by Andy
    I have three selection drop downs in a form comprising of day, month, year. Pretty standard. Ive omitted all the individual select options for the purposes of this question. <label for="start_date">Start Date<font class="required">*</font>:</label> <select name="place_booking[day_val]"> <select name="place_booking[month_val]"> <select name="place_booking[year_val]"> Underneath this i have a selection for the number of days the client wishes to stay at the letting. <label for="number_of_days">Number of Days<font class="required">*</font>:</label> <select name="place_booking[number_of_days]"> Underneath there is a space to display the departure date based on there two selections above. <label for="departure_date">Departure Date<font class="required">*</font>:</label> ? - this bit i would like to display the calculated date after the above is selected Any help would be grealty appreciated.

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  • managing html rich text selections

    - by swami
    Hi, I am writing a component for a web app which will display some html, and let me capture and manipulate the selection boundaries (of the text selected by the user). I have done this successfully (for Mozilla) with a simple div element using window.getSelection(). However, the browser selection API is different for IE. If I were to use a textarea instead (for interacting with the selection api), is there a uniform API across the browsers? Then I would need to overlay a DIV on top of this to display the styled text, and presumably I'd need to manage the cursor etc... Basically I want a rich text editor - but without editing. Does anyone have any advice on the best way to go about this, which is quick, simple and cross browser compatible. I don't want to spend ages reinventing the wheel... (If anyone's interested - this is for an online xml editor. I capture the users selection on a html version of the xml doc and then send the selection offsets info to the server, where the real xml doc gets marked up). Kind Regards Swami

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  • Edit very large xml files

    - by Matt
    I would like to create a text box which loads xml files and let users edit them. However, I cannot use XmlDocument to load since the files can be very large. I am looking for options to stream/load the xml document in chunks so that I do not get out of memory errors -- at the same time, performance is important too. Could you let me know what would be good options?

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  • Store the cache data locally

    - by Lu Lu
    Hello, I develops a C# Winform application, it is a client and connect to web service to get data. The data returned by webservice is a DataTable. Client will display it on a DataGridView. My problem is that: Client will take more time to get all data from server (web service is not local with client). So I must to use a thread to get data. This is my model: Client create a thread to get data - thread complete and send event to client - client display data on datagridview on a form. However, when user closes the form, user can open this form in another time, and client must get data again. This solution will cause the client slowly. So, I think about a cached data: Client <---get/add/edit/delete--- Cached Data ---get/add/edit/delete---Server (web service) Please give me some suggestions. Example: cached data should be developed in another application which is same host with client? Or cached data is running in client. Please give me some techniques to implement this solution. If having any examples, please give me. Thanks.

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  • How to make a panel behave like a modal for the form

    - by The King
    Hi All, I have a MDI child Form which displays items that are already in the database. I use a datagridview (PostedItemsDataGrid) to display the items... I also have a Button which enables user to edit the line selected in the datagridview. There are also other controls on the form other than the two controls specified. I use a panel (Name : UpdateItemsPanel) containing various controls to edit the item selected... I want to display this form Modally... ie... When this form is active, user should not be allowed to access any controls other than the controls in the UpdateItemsPanel. I tried the following but got into other problems... If you can help me in solve either the main or one of these problems, it would be great help. I tried putting the contents of UpdateItemsPanel in a seperate form and show it as modal... The trouble was showing the update form as modal, blocks all other MDI forms also. Other problem with this 1 is, I need to position the modalform just below the PostedItemsDataGrid... I'm not sure How to do it... I tried putting the other controls in a panel and disabling the panel when updatepanel is displayed. This ofcourse, makes the (PostedItemsDataGrid) disabled and hence unable to scroll... Could you please help.... Please let me know, incase you need more info...

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  • Pls help working with Dropdownlist in scroll window.

    - by Rahul
    Hi all, Data is stored in the database table with the field document type and document id. And displayed in the scrollwindow, scrollwindow is editable. Data displayed like this: In scrollwindow dropdown items are quote, order, invoice etc. And suppose for Quote type document id is QTE100, and for order is ORD100 etc. In this format data is displayed in the scrollwindow. Here my query is at run time when user change the document type say for Quote to Order warning message should display like “This range is not valid”. And since the scrollwindow editable when user select any new document type from dropdown list system should allow to add that new document type and should not display any message. Pls somebody help me how can I achieve this???pls………pls…......pls For this I have written this code in dropdown document change event. Document Type Site_Scroll Document Type_CHG: warning "The range entered isn't valid."; clear window 'Document Type Site_Scroll'; fill window 'Document Type Site_Scroll' table sop_site_line_temp; But whenever I am changing any document from existing one getting the warning message like “This range is not valid” this is expected, but after changing when the window is filled again by temp table focus is setting to document type dropdown list. One more thing whenever I am going to select any new document type from document type I am getting the same warning message which is not expected, system should allow user to select new document type without giving any warning message. Pls….somebody give me some idea or pls modify my code….

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  • Location of Embedly (JQuery-Preview) Results

    - by user749798
    Embedly/Jquery-Preview has been fantastic. However, I'm trying to change the location of the preview result, and having trouble. Right now, the result appears right below the input field...but I'd rather have it in a separate part of the page. Is there a way to do this? I've tried changing the location of the selector and loading divs, but that hasn't helped. It seems to ignore those divs and put it right below the submit button. Below is my code: <form accept-charset="UTF-8" action="private" class="new_comment" data-remote="true" id="new_comment" method="post"> <input class="photo_comm" id="comment_comment" name="comment[comment]" placeholder="add a comment or link..." size="30" type="text" /><span type="text" id="counter">1000</span> <input class="btn btn-primary btn-mini" data-disable-with="Submitting..." name="commit" type="submit" value="Post" /> </form> <!-- Placeholder that tells Preview where to put the loading icon--> <div class="loading"> <img src='http://embedly.github.com/jquery-preview/images/loading-rectangle.gif'> </div> <!-- Placeholder that tells Preview where to put the selector--> <div class="selector"></div> $('#comment_comment').preview({ key:'60f1dcdf3258476794784148a6eb65e7', // Sign up for a key: http://embed.ly/pricing selector : {type:'rich'}, preview : { submit : function(e, data){ e.preventDefault(); $.ajax({ dataType: 'script', url: this.form.attr('action'), type: 'POST', data: data }); }, }, autoplay : 0, maxwidth : 400, display : {display : 'rich'} });

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