API -> BroadcastSystemMessage [ Library : user32.dll, Category : Message ] [C#, VB, VB.net]

BroadcastSystemMessage

Library : user32.dll Category : Message

Api Example(s)
How to send a specific windows message to all windows ?

API Description :

The BroadcastSystemMessage function sends a message to the specified recipients. The recipients can be applications, installable drivers, Windows-based network drivers, system-level device drivers, or any combination of these system components.

VB Declaration :

Show Multiline Public Private

Declare Function BroadcastSystemMessage Lib "user32" Alias "BroadcastSystemMessage" (ByVal dw As Long, pdw As Long, ByVal un As Long, ByVal wParam As Long, ByVal lParam As Long) As Long

Parameters :

· dwFlags
Option flags. Can be a combination of the following values:
BSF_FLUSHDISK
 Flush the disk after each recipient processes the message.
BSF_FORCEIFHUNG
 Continue to broadcast the message, even if the time-out period elapses or one of the reci

Return :

If the function succeeds, the return value is a positive value. 

If the function is unable to broadcast the message, the return value is -1. 

If the dwFlags parameter is BSF_QUERY and at least one recipient returned BROADCAST_QUERY_DENY to the corre

OS Requirement :

Requires Windows NT 4.0 or later
Requires Windows 95 or later

Dotnet Replacement :