WM_CAP_SET_SCALE
The
WM_CAP_SET_SCALE message enables or disables scaling of the preview video
images. If scaling is enabled, the captured video frame is stretched to the
dimensions of the capture window. You can send this message explicitly or by
using the capPreviewScale
macro.
WM_CAP_SET_SCALE
wParam = (WPARAM) (BOOL)f;
lParam = 0L;
Parameters
f
Preview
scaling flag. Specify TRUE for this parameter to stretch preview frames to the
size of the capture window or FALSE to display them at their natural size.
Return Values
Returns TRUE
if successful or FALSE otherwise.
Remarks
Scaling
preview images controls the immediate presentation of captured frames within
the capture window. It has no effect on the size of the frames saved to file.
Scaling has
no effect when using overlay to display video in the frame buffer.
See Also