WM_CAP_DLG_VIDEODISPLAY

  • Article

The WM_CAP_DLG_VIDEODISPLAY message displays a dialog box in which the user can set or adjust the video output. This dialog box might contain controls that affect the hue, contrast, and brightness of the displayed image, as well as key color alignment. You can send this message explicitly or by using the capDlgVideoDisplay macro.

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

Return Values

Returns TRUE if successful or FALSE otherwise.

Remarks

The controls in this dialog box do not affect digitized video data; they affect only the output or redisplay of the video signal.

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

Requirements

**  Windows NT/2000/XP:** Included in Windows NT 3.1 and later.
**  Windows 95/98/Me:** Included in Windows 95 and later.
**  Header:** Declared in Vfw.h.

See Also

Video Capture, Video Capture Messages, capDlgVideoDisplay, CAPDRIVERCAPS