BUG: BroadcastSystemMessageA Not Found in User32.dll on Win 95

ID: Q182809

The information in this article applies to:

Microsoft Win32 Software Development Kit (SDK) on the following platform:
```
    - Microsoft Windows 95
```

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 problem is fixed in Windows 98 and Windows NT 4.0 and later by exporting both BroadcastSystemMessage and BroadcastSystemMessageA from USER32.DLL.

Additional query words: User32.dll

Keywords          : kbGrpUser kbWinOS95 kbWndwMsg kbshell 
Issue type        : kbbug

Last Reviewed: January 2, 1999