WM_CAP_GRAB_FRAME message
The WM_CAP_GRAB_FRAME message retrieves and displays a single frame from the capture driver. After capture, overlay and preview are disabled. You can send this message explicitly or by using the capGrabFrame macro.
WM_CAP_GRAB_FRAME
wParam = (WPARAM)0;
lParam = (LPARAM)0L;
Return Value
Returns TRUE if successful or FALSE otherwise.
Remarks
For information about installing callback functions, see the WM_CAP_SET_CALLBACK_ERROR and WM_CAP_SET_CALLBACK_FRAME messages.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|