# Function Reference

# _WinAPI_PostMessage

Places a message in the message queue and then returns

#include <WinAPISysWin.au3>
_WinAPI_PostMessage ( $hWnd, $iMsg, $wParam, $lParam )

## Parameters

$hWnd | Identifies the window whose window procedure will receive the message. If this parameter is 0xFFFF (HWND_BROADCAST), the message is sent to all top-level windows in the system, including disabled or invisible windows, overlapped windows, and pop-up windows; but the message is not sent to child windows.
$iMsg | Specifies the message to be sent
$wParam | First message parameter
$lParam | Second message parameter

## Return Value

Success: | True
Failure: | False, call _WinAPI_GetLastError() to get extended error information

## See Also

Search PostMessage in MSDN Library.