Sets the pattern to which a window's content region is redrawn.
pascal OSStatus SetWindowContentPattern (
WindowPtr window,
PixPatHandle pixPat);
If your application uses the SetWindowContentPattern function, the window's content region is redrawn to the pattern you specify, without affecting the value specified in the window's CGrafPort structure for the current background pattern. See Drawing in a Window's Content Region for further discussion and an example of calling the related function SetWindowContentColor .
The function GetWindowContentPattern .