VS 2008 DirectX Audiovideo - Snapshot - Getting Errors And Exceptions
Sep 11, 2010
I have already incorporated DirectX into a program and set the owner to a picturebox which so far works great, but all it does is set the place/dimensions of the directx window to the picturebox... it doesn't actually USE the picturebox for the video so if i pause the video or set a timeframe I can't use the picturebox frame/image to pull information from. So what I want to do is when i pause the video at a certain frame I want to be able to actually take a snapshot and populate the picturebox with that image and then be able to save/manipulate it like a normal picture. I have read some examples and coding on screen snapshots using DirectX.3D, but not audiovideo. Not sure if its the same or what. I know normally you would start out with CODE, but in this case I have NO IDEA exactly where or how to start it.. I tried Bitmap options with the screen area/location, etc... but was getting errors and exceptions..
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Jun 30, 2009
Managing a Music Collection Using Visual Basic Express and SQL Server Express.Just what I wanted. The Database setup was very straight forward. However, when it came to the Visual Basic coding I got completely lost The example references Microsoft.DirectX.AudioVideoPlayback.dll But I do not understand how to reference this from within the Visual Basic express coding. Within the example there is a line Private withEvents mp3 As Audio = Nothing.When trying to build the example Visual Basic 2008 Express alway reports the following error for this line.Type 'Audio' is not defined.I have installed the DirectX 9c SDK software and from within Visual Basic Express 2008 selected the following,[code]How do I play and MP3 File from within my Visual Basic express 2008 Application?
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Nov 19, 2011
on the msdn pages describing classes etc, there are a lot of properties and methods mentioned from classes. But is there a kind of property of a class or method which gives te collection of expected errors ?i ask this because in the try catch statement you can specify the exceptions and errors you want to catch, but
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Jul 16, 2009
Basically I need to be able to take a snapshot from a webcam.The webcam is known so I know what cam I am looking for and what I wish to connect to and it will be there but I can't find out how to take a snapshot from it and then be able to save it as a jpg?
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Dec 26, 2009
I've just skipped around a few inbuilt VB classes' methods which throws exception. of all that i've came across, methods may throw multiple exceptions but ALL of them are exclusive, meaning there is no way 2 exceptions will ever occur simultaneously, yea and i was trying to make my class throw 2 exceptions simultaneously, hence this question, must all exceptions be exclusive?
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Dec 3, 2009
I'm using Visual Studio 2008 on Windows 7 64-bit and latest DirectX SDK (August 2009). When I run program, window looks like this . The code is from site . Windows Vista 64-bit has the same problem. My graphic cart is Gigabyte GeForce 9400 GT
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Sep 21, 2010
I am trying to learn how to use directX on VB.net. I found this tutorial:[URl]..and followed what Jenner wrote there but VB errors when I try running it.I installed the latest directX SDK package microsoft had and still the code errors when I run it.Anyone knows why that is? or has got some other tutorial that I could check out? I am running on windows 7 if it matters.
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May 1, 2010
How do I draw lines using DirectX? (on my form)
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Feb 21, 2010
I have a simple piece of code that checkes if the connection to the database failed or not.
[Code]...
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Sep 2, 2009
I don't understand why do I get exceptions in the emmediate window and how could I resolve them as they are not showing where and how do they occur. I get these every time I run he application in the Studio:
[Code]...
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Jul 25, 2009
I need to overlay a small bar along the top of the screen over a fullscreen DirectX game. I have searched for a while but I have not found any code examples for VB.NET 2008 (I've never used any previous version). How can I do this? Would this involve learning DirectX programming?
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Aug 20, 2010
in Directx Full Screen Game GetPixel Function Not Working (#000000)
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Dec 6, 2009
I'm encountering some rather strange behavior in the VB2008 IDE regarding exceptions. I tried to explain what I need as best I can in the title, but I'm not sure there's a succinct way to describe it.I'm not the best programmer in the world to say the least, so sometimes I do things that generate exceptions when I try to run them (This is why we test things continually, right?). Typically, in addition to the Exception Assistant popping up and giving a suggestion, the IDE highlights the code that caused the Exception in the Code Window.
Well, today I went back to a project I had been working on after putting it on hold for awhile, and while the Exception Assistant still pops up when there's an exception, the IDE doesn't auto-scroll and highlight the offending code anymore. I have no idea why it does this, nor do I know how to fix it. Resetting settings from the Import and Export Settings Wizard didn't fix the problem, and neither did trying to reinstall VB2008. Is there some setting, obvious or otherwise, that would cause this?
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Aug 30, 2009
When I run my VB application (as far as I know any application) within Visual Studio I get a bunch of exceptions listed in the Immediate Window. They seem to refer to system files, not the files I generate. They also keep generating as the program processes data. Here is a sample.
Quote:
A first chance exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll
A first chance exception of type 'System.ArgumentException' occurred in Microsoft.VisualBasic.dll
[Code].....
Any thoughts as to what this is and whether it is a problem. The applications seem to run fine.
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Aug 4, 2009
I need to capture image from WebCam in my .NET application which should work on both Win XP & Vista. While creating this thread, the forums suggested me 3 links that were helpful. I though I got the answer from one of them, but it worked spcifically on Win XP, not Vista.
I jus tneed to capture an image from the WebCam, rest all processing of the would be handled by my .NET code.
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Dec 27, 2010
I'm trying to take a snapshot of a website and show the snap shot in my picturebox.
the only thing on my form would be the picture box and a button to take a snapshot.
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Apr 11, 2012
Is there a way I can catch and handle two different exceptions within the same exception type? For example:
Try
' My code
Catch ex As System.Net.WebException
End Try
I have 2 different exceptions that are System.Net.WebException. I want to handle them different ways. Problem is the catch block above catches them both. Is there a way I can determine if which of the two it is and handle them differently?
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Jul 15, 2009
I'm using VS 2008 and .NET 3.5. I'm in one of my programs and when I run the program to test it, I keep getting these errors... 'Exception occurred' And the line is highlighted green and there's a green arrow on the side line (where you can enter breakpoints). When the code stops at these exceptions, I can hit continue and the code still runs just fine even though there were a ton of exceptions. Now, I'm wondering if there is a way that I can skip over these or have them not show up because I know the files that this is happening have not been changed in several weeks and I've tested this program beginning of this week and it was working fine... no exceptions or anything. I'm not sure what would've changed. The only thing I did was install the newest versions of Telerik Rad Controls. That should have nothing to do with the exceptions I'm getting.why i'm getting these now all of a sudden or how I can just skip over these without having to hit continue after each time?
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Apr 10, 2009
I would like to be able to take a snapshot of an whole RTF document displayed on screen (and also whats not yet displayed below screen) and save it as a JPEG image, but I cannot work out code to do this in VB.NET.I can do it all manually by displaying the document on screen, highlighting all text displayed and copying it to the clipboard. Then I can paste it into 'Paint' and save it as a JPEG. But I would like to be able to do this programatically inside my program.
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May 31, 2012
How i can take snapshot of webbrowser and save it to C:file.png
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Oct 21, 2009
So I've made this control that inherits from the treeview control and basically loads objects from active directory into a treeview (url...).All working fine, but as this is the first custom control I have made that I have intended for other people to use, I'm not quite sure how I should approach error handling.I mean, obviously I shouldnt do something like show any exceptions in a messagebox because that might not be what the person that is using the control wants to happen. So do I just write out exception messages to the debug window? Do I swallow exceptions (guessing not)? Do I just totally ignore them so that they are thrown in the user's project?
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Jun 8, 2010
i created a Class library (.dll) and loaded it as reference into a main project. In the code for the class i've handled exceptions using try..catch subs, however when debugging the main project exceptions that are handled in the DLL still get thrown! (the class ".vb" file gets loaded into the debugger and the line of the exception shows up)
Up till now i've found it useful that when an unhandled error occurs in the imported reference, it shows up in the main project with tracing back to the referenced class. But i dont want the exceptions that are handled in the reference class to be thrown when debugging the main project!
As you can see the exception thrown was handled with try...catch this class exception.vb belongs to the project that created the class library (.DLL that i referenced). i didnt even load the project that built the reference so it amazes me that it could find the coding class to begin with.
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Jun 11, 2009
I have been using the VB2008 express edition following Bob Tabors's 18 course lesson in VB 'snapshot 5'. I was starting lesson 14 on the RSS reader. This lesson adds the .mdf for the first tome. The .mdf file was unable to be opened due to some message about code 603?. The final requst is that the database be recreated. What would you suggest. I was not expected to run into this problem so quickly in the learning process. so be it
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Feb 4, 2009
I have a third party GIS tool that I'm using to view maps with. Occasionally we have to take a snapshot of a portion of the map and dump it to a bitmap. The third party tool has a function that will give me the upper left and lower right coordinates of the area selected on the map. These coordinates come out as system.drawing.point objects.
The two point objects are then used to generate a new system.drawing.size object that will give the height and width of the area selected. The height and width values are passed to the constructor for the system.drawing.bitmap.All this works fine most of the time. Sometimes, however, when the user selects a particularly large area, the bitmap constructor bombs with a 'parameter is not valid' error. There isn't any documentation on this error, but I'm assuming it means the height and width are too big.
So what I'm wondering is... is there some way to check my height and width values prior to creating the bitmap and make sure they are in acceptable bounds?
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Dec 13, 2010
I am trying to take a snapshot, or a copy of a control, for a bitmap. I'm wanting to do this to a listbox, but part of the listbox may be hidden.On the mouse_down event I need to get the snapshot of the whole listbox (even though parts may be hidden behind other controls, I need the whole listbox) and draw it to the screen in the same location as the original listbox (but the hidden parts still stay hidden behind the other controls on the bitmap).
On the mouse_move event I need to move the snapshot up/down based on mouse movement. This also moves the listbox up/down and this code is done. I will just move the snapshot of the listbox the same way as the original listbox.On the mouse_up event, I will dispose the bitmap and display the original listbox again.
I am doing this because moving a listbox up/down is really messy. It's a custom drawn listbox and looks horrible moving, so I figured if I could snapshot it, move the bitmap while visible, and listbox behind the scenes, it will flow smoothly and no one would notice I am scrolling a bitmap instead.
Double buffering the form and listbox didn't help . I've done some graphics.drawstring before, but not much on other graphics.
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Jun 11, 2009
I need to take a snapshot of a form which is not necessarily visible on the screen. I need to save that into a Bitmap object. I cannot use Graphics.CopyFromScreen() because if there was anything obstructing the form, it will appear in the snapshot taken.
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Mar 11, 2010
i have seen google chrome, whenever you open a new tab, it will show you the last 8 pages that you have visited. I want to do a similar thing, except i have a vb.net code behind the .aspx file, which shall give me a list of URL's called form the database. When the page is loaded the URL's are displayed on it. what i need my code to do is to pick up these URL's, on the background open a web browser, take a snapshot of it and save it, and display it on the screen. dont recommend IFrames cause I need a snapshot and not an actual running site in the small snapshot.
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Jan 8, 2010
I'm building .NET application that uses DirectX API for web camera device I'm using DirectShowNet Library .
i want to capture the image when user clicks the snapshot button available on webcam.and then dispaly the image in picture box.pls help me out iam stuck with this issue.
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Sep 23, 2011
I have a .net application that uses customerrors web.config module to display meaningful messages for errors. It works without any issues for 500 errors/exceptions caused by non-ajax and ajax components (updatepanel). However, in a scenario where updatepanel's asynchronous request times out, there is no error raised at all. I was able to see the timeout in firebug and come up with a solution that would at least display the error message as an alert and then redirect the user to the 500 error page using javascript but it's not quite doing what the rest of the application does in case of an unhandled errors like these. I basically just want everything to go through "LogEvent" mechanism so based on the severity of the error, it does the necessary work.This 500 error page doesn't have anything in the Server.GetLastError() for these timeout scenarios. Is this an expected behaviour? Can it be changed so I do have access to these timeouts in Server.GetLastError() OR maybe just run this error through "LogEvent" mechanism? Is there a better/more graceful way to handle this issue?
Below is my code to give you an idea, not exactly what I have in my application but pretty close.
Web.Config
<customErrors mode="On" defaultRedirect="~/Errors/ErrorUnknown.aspx" redirectMode="ResponseRewrite">
<error statusCode="500" redirect="~/Errors/Error500.aspx" />
</customErrors>
[code]....
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Mar 16, 2009
I am working on a project for school and I am encountering several errors in my code relating to the numeric up down boxes I have in the application. I have inserted my code and the error list below. I'm sure that it is probably something really simply but I am learning the language on my own and I am a little stumped here.
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