SendMessage Function
Declaration

Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

Declare Function SendMessageByString Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As String) As Long

Declare Function SendMessageByNum Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Long) As Long


Description of Function

Sends a message to a window by calling a window function for that window. Does not return until the message is processed.

Parameter Type / Description
hwnd Long / Handle of window to recieve message.
wMsg Long / Message identifier.
wParam Long / Depends on message.
lParam Long / Depends on message.

Return Value

Long / Depends on message.