WM_CAP_PAL_AUTOCREATE
The
WM_CAP_PAL_AUTOCREATE message requests that the capture driver sample video
frames and automatically create a new palette. You can send this message
explicitly or by using the capPaletteAuto macro.
WM_CAP_PAL_AUTOCREATE
wParam = (WPARAM) (iFrames);
lParam = (LPARAM) (DWORD) (iColors);
Parameters
iFrames
Number of
frames to sample.
iColors
Number of
colors in the palette. The maximum value for this parameter is 256.
Return Values
Returns TRUE
if successful or FALSE otherwise.
If an error
occurs and an error callback function is set using the WM_CAP_SET_CALLBACK_ERROR message, the error callback
function is called.
Remarks
The sampled
video sequence should include all the colors you want in the palette. To obtain
the best palette, you might have to sample the whole sequence rather than a
portion of it.
See Also