GetWindowPic

GetWindowPic Obtain Handle of window picture, if any

#include <Windows.h> Window Manager

WindowPtr theWindow ; window of interest

returns handle to Picture defining window contents; 0=none

GetWindowPic returns a PicHandle of the picture that defines the contents

of a window. In most cases, it returns NIL, indicating that no such picture

exists.

Returns: the value found in the windowPic field of theWindow 's

WindowRecord. A non-NIL value indicates that a previous call to

SetWindowPic has defined such a picture.

Notes: This routine can be used as part of a speed-optimization technique you can

use to avoid time-consuming updates on windows that do not change, or

windows that have been saved temporarily as a bit image.

Use SetWindowPic to install a picture defining a window. See that topic

for related information.

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