Question about capDlgVideoSource

This is a discussion on Question about capDlgVideoSource within the Windows Programming forums, part of the Platform Specific Boards category; I am having a problem with the capDlgVideoSource . My problem is that my program only displays 2 of the ...

  1. #1
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    Question about capDlgVideoSource

    I am having a problem with the capDlgVideoSource . My problem is that my program only displays 2 of the 3 possible menus in the pop up menu from capDlgVideoSource.

    MSDN says:
    The capDlgVideoSource macro displays a dialog box in which the user can control the video source. The Video Source dialog box might contain controls that select input sources; alter the hue, contrast, brightness of the image; and modify the video quality before digitizing the images into the frame buffer. You can use this macro or explicitly send the WM_CAP_DLG_VIDEOSOURCE message.
    I know that my video source supports all the menus (the one I really need is the one for selecting source, and that is the one that is missing), as I get them all in other applications.

    Here is how I call the capDlgVideoSource:
    Code:
    	capDriverGetCaps(hWndCapWindow, &CapDrvCaps, sizeof (CAPDRIVERCAPS));
    	if (CapDrvCaps.fHasDlgVideoSource) 
    		capDlgVideoSource(hWndCapWindow);
    And here is how I create hWndCapWindow:
    Code:
    // Create the capture window
    hWndCapWindow = capCreateCaptureWindow( TEXT("CaptureWindow"), WS_CHILD| WS_VISIBLE| SS_SIMPLE | WS_EX_LAYERED,
    								320,50,	640,480,hWnd, MAINWIN_ID);
    
     SetLayeredWindowAttributes( hWndCapWindow, NULL, 150,NULL);   
    
    // Now that we have created the capture panel we can connect the first driver
    if(capDriverConnect(hWndCapWindow,0) == 0)
    	return false;
    
    capPreviewRate(hWndCapWindow,60);  
    capPreview(hWndCapWindow,TRUE);
    Any ideas?

  2. #2
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    An other thing that is weird is the my programs fails to connect to a webcam if there is more then one in the machine.

    With one webcam connected, this work,
    but it returns false if two or more is connected.
    Code:
    	// Now that we have created the capture panel we can connect the first driver
    	if(capDriverConnect(hWndCapWindow,0) == 0)
    		return false;

  3. #3
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    Ok, I found out what the problem was. It by far the most "random" bug I have been so far.

    Compiling the program on Windows XP solved the problem( Everything the same, just moved the project folder to a USB pen). The program works under Vista, it just cant be compiled there...

    Anyone knows why?

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