WM_CAP_SET_SCROLL
The
WM_CAP_SET_SCROLL message defines the portion of the video frame to display in
the capture window. This message sets the upper left corner of the client area
of the capture window to the coordinates of a specified pixel within the video
frame. You can send this message explicitly or by using the capSetScrollPos macro.
WM_CAP_SET_SCROLL
wParam = (WPARAM) 0;
lParam = (LPARAM) (LPPOINT) (lpP);
Parameters
lpP
Address to
contain the desired scroll position.
Return Values
Returns TRUE
if successful or FALSE otherwise.
Remarks
The scroll
position affects the image in both preview and overlay modes.
See Also