The WM_CAP_DLG_VIDEOFORMAT message displays a dialog box in which the user can select the video format. The Video Format dialog box might be used to select image dimensions, bit depth, and hardware compression options. You can send this message explicitly or by using the capDlgVideoFormat macro.

wParam = (WPARAM) 0; 
lParam = 0L; 

Return Value

Returns TRUE if successful or FALSE otherwise.


After this message returns, applications might need to update the CAPSTATUS structure because the user might have changed the image dimensions.

The Video Format dialog box is unique for each capture driver. Some capture drivers might not support a Video Format dialog box. Applications can determine if the capture driver supports this message by checking the fHasDlgVideoFormat member of CAPDRIVERCAPS.


Minimum supported client
Windows 2000 Professional [desktop apps only]
Minimum supported server
Windows 2000 Server [desktop apps only]

See also

Video Capture

Video Capture Messages