Article: Q128237
Product(s): Microsoft Windows Software Development Kit
Version(s): WINDOWS:3.1
Operating System(s):
Keyword(s): kb16bitonly
Last Modified: 06-NOV-1999
-------------------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows Software Development Kit (SDK) 3.1
-------------------------------------------------------------------------------
SYMPTOMS
========
The Polyline API will return a failure code if called on a DC that has a NULL
clipping region selected. One situation in which this can occur is when Polyline
is used to draw into a DC for a window that is completely obscured by another
window.
RESOLUTION
==========
Check to see if the clipping region is NULL before calling Polyline and testing
its return value.
STATUS
======
This behavior is by design on Windows 3.1.
This behavior does not occur on Windows NT or on Windows 95.
Additional query words: 3.10 no32bit Polygon fails hidden
======================================================================
Keywords : kb16bitonly
Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK310
Version : WINDOWS:3.1
=============================================================================