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NF:vfw.capSetCallbackOnFrame |
capSetCallbackOnFrame macro (vfw.h) |
The capSetCallbackOnFrame macro sets a preview callback function in the application. AVICap calls this procedure when the capture window captures preview frames. You can use this macro or explicitly call the WM_CAP_SET_CALLBACK_FRAME message. |
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multimedia\capsetcallbackonframe.htm |
Multimedia |
7e9e33cb-9213-4111-a1de-700493949f2d |
12/05/2018 |
_win32_capSetCallbackOnFrame, capSetCallbackOnFrame, capSetCallbackOnFrame macro [Windows Multimedia], multimedia.capsetcallbackonframe, vfw/capSetCallbackOnFrame |
vfw.h |
Windows |
Windows 2000 Professional [desktop apps only] |
Windows 2000 Server [desktop apps only] |
Windows |
19H1 |
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The capSetCallbackOnFrame macro sets a preview callback function in the application. AVICap calls this procedure when the capture window captures preview frames. You can use this macro or explicitly call the WM_CAP_SET_CALLBACK_FRAME message.
Handle to a capture window.
Pointer to the preview callback function, of type capVideoStreamCallback. Specify NULL for this parameter to disable a previously installed callback function.
The capture window calls the callback function before displaying preview frames. This allows an application to modify the frame if desired. This callback function is not used during streaming video capture.