FIX: BroadcastSystemMessageA Not Found in User32.dll on Win 95 (182809)

The information in this article applies to:

Microsoft Platform Software Development Kit (SDK) 1.0, when used with:
- Microsoft Windows 95

This article was previously published under Q182809

SYMPTOMS

When an application running under Windows 95 calls BroadcastSystemMessage, the application fails with the following error:

BroadcastSystemMessageA not found in User32.dll.

CAUSE

The WINUSER.H header file contains the following code:

   #ifdef UNICODE
   #define BroadcastSystemMessage  BroadcastSystemMessageW
   #else
   #define BroadcastSystemMessage  BroadcastSystemMessageA
   #endif

The error occurs under Windows 95 because BroadcastSystemMessageA is not exported by USER32.DLL. The same code works as expected under Windows 98 and Windows NT since both BroadcastSystemMessage and BroadcastSystemMessageA are exported by USER32.DLL.

RESOLUTION

Use the following code to call BroadcastSystemMessage instead of BroadcastSystemMessageA:

   #include <windows.h>

   #ifdef BroadcastSystemMessage
   #undef BroadcastSystemMessage
   #define BroadcastSystemMessage BroadcastSystemMessage
   #endif

STATUS

This bug was corrected in Windows 98 and later by exporting both BroadcastSystemMessage and BroadcastSystemMessageA from USER32.DLL.

Modification Type:	Minor	Last Reviewed:	7/11/2005
Keywords:	kbbug kbfix kbOSWin2000fix kbOSWin98fix kbshell KB182809 kbAudDeveloper