SHSendMessageBroadcast function
[This function is available through Windows XP and Windows Server 2003. It might be altered or unavailable in subsequent versions of Windows.]
Applies to: desktop apps only
Sends a message to all top-level windows in the system.
Syntax
LRESULT SHSendMessageBroadcast( __in UINT uMsg, __in WPARAM wParam, __in LPARAM lParam );
Parameters
- uMsg [in]
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Type: UINT
The message to send.
- wParam [in]
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Type: WPARAM
Additional message-specific information.
- lParam [in]
-
Type: LPARAM
Additional message-specific information.
Return value
Type: LRESULT
The return value is not meaningful.
Remarks
SHSendMessageBroadcast is equivalent to SendMessage with HWND_BROADCAST. To avoid causing the Shell to become unresponsive in the case where there could be a window in the system that is not responding to messages, use SHSendMessageBroadcast.
SHSendMessageBroadcast is not exported by name. SHSendMessageBroadcastA is exported from Shlwapi.dll as ordinal 432. SHSendMessageBroadcastW is exported from Shlwapi.dll as ordinal 433.
Requirements
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Minimum supported client | Windows XP |
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Minimum supported server | Windows Server 2003 |
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Header |
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DLL |
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Unicode and ANSI names | SHSendMessageBroadcastW (Unicode) and SHSendMessageBroadcastA (ANSI) |
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Build date: 3/7/2012
