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capGetVideoFormat
The capGetVideoFormat macro retrieves a copy of the video format in use. You can use this macro or
explicitly call the WM_CAP_GET_VIDEOFORMAT message.
DWORD capGetVideoFormat(
hwnd,
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| psVideoFormat,
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| wSize
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| );
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hwnd
Handle of a capture window.
psVideoFormat
Address of a BITMAPINFO structure. You can also specify NULL to retrieve the number of bytes needed
by BITMAPINFO.
wSize
Size, in bytes, of the structure referenced by s.
Return Values
Returns the size, in bytes, of the video format or zero if the capture window
is not connected to a capture driver. For video formats that require a palette,
the current palette is also returned.
Remarks
Because compressed video formats vary in size requirements applications must
first retrieve the size, then allocate memory, and finally request the video
format data.
See Also
BITMAPINFO, WM_CAP_GET_VIDEOFORMAT
Related Links
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