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Displaying Dialog Boxes to Set Video Characteristics
Each capture driver can provide up to three different dialog boxes used to
control aspects of the video digitization and capture process. The following
example demonstrates how to display these dialog boxes. Before displaying each
dialog box, the example calls the capDriverGetCaps macro and checks the CAPDRIVERCAPS structure returned to see if the capture driver can display it.
CAPDRIVERCAPS CapDrvCaps;
capDriverGetCaps(hWndC, &CapDrvCaps, sizeof (CAPDRIVERCAPS));
// Video source dialog box.
if (CapDriverCaps.fHasDlgVideoSource)
capDlgVideoSource(hWndC);
// Video format dialog box.
if (CapDriverCaps.fHasDlgVideoFormat)
{
capDlgVideoFormat(hWndC);
// Are there new image dimensions?
capGetStatus(hWndC, &CapStatus, sizeof (CAPSTATUS));
// If so, notify the parent of a size change.
}
// Video display dialog box.
if (CapDriverCaps.fHasDlgVideoDisplay)
capDlgVideoDisplay(hWndC);
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