BUG: Windows NT Hangs When PolyBezier Gets Certain Coordinates

ID: Q137762

The information in this article applies to:

Microsoft Win32 Software Development Kit (SDK), used with:
- Microsoft Windows NT 3.51

SYMPTOMS

PolyBezier causes Windows NT version 3.51 to hang (stop responding to input) when certain valid coordinates are passed to it. To get out of it, you have to turn off the computer. For example, the following valid coordinates cause the problem when they are passed to PolyBezier:


   point[0].x =102;
   point[0].y =532;
   point[1].x =221;
   point[1].y =180;
   point[2].x =340;
   point[2].y =-172;
   point[3].x =459;
   point[3].y =-524;

Other apparently unrelated coordinates can also cause the problem. To work around this bug, try using the PolyBezier32s() function, which is described in the following article in the Microsoft Knowledge Base:

Q135058SAMPLE: How to Draw Cubic Bezier Curves in Windows and Win32s

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

NOTE: This bug will be fixed in a later release of Windows NT.

Additional query words: Graphics Crash Hang Curves

Keywords : kbNTOS351 kbSDKWin32 kbDSupport
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbbug