PRB: IsGDIObject() Enhanced and Renamed to GetObjectType()

Last reviewed: December 30, 1996
Article ID: Q91072

The information in this article applies to:

Microsoft Win32 Application Programming Interface (API) included with:

    - Microsoft Windows NT, versions 3.1, 3.5, 3.51, 4.0
    - Microsoft Windows 95, version 4.0

SYMPTOMS

In the original version of Win32, there is no IsGdiObject() function in the Win32 API. However, the new function GetObjectType can be used as a replacement for IsGDIObject.

The changes apply to Windows 95 and Windows NT 4.

CAUSE

The Windows 3.1 IsGDIObject function has been enhanced and renamed to GetObjectType. In addition to verifying that an object handle refers to a GDI object, GetObjectType also returns a value that describes what kind of object the handle represents.

RESOLUTION

You can use the following macro to aid in porting your programs that were originally designed for Windows 3.1:

    #define IsGDIObject(hobj) ((BOOL)GetObjectType(hobj))

Additional reference words: 3.10 3.50
KBCategory: kbgraphic kbprb
KBSubcategory: GdiMisc

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: December 30, 1996
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.