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WM_CAP_DLG_VIDEOSOURCE

  • Article

The WM_CAP_DLG_VIDEOSOURCE message displays a dialog box in which the user can control the video source. The Video Source dialog box might contain controls that select input sources; alter the hue, contrast, brightness of the image; and modify the video quality before digitizing the images into the frame buffer. You can send this message explicitly or by using the capDlgVideoSource macro.

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

Return Values

Returns TRUE if successful or FALSE otherwise.

Remarks

The Video Source dialog box is unique for each capture driver. Some capture drivers might not support a Video Source dialog box. Applications can determine if the capture driver supports this message by checking the fHasDlgVideoSource 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, capDlgVideoSource, CAPDRIVERCAPS