Function name: SendMessage

Defined in : User32

Requirements : Windows NT 3.1 or later; Windows 95 or later

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

Parameters:

* hWnd Identifies the window whose window procedure will receive the message. If this parameter is HWND_BROADCAST, the message is sent to all top-level windows in the system, including disabled or invisible unowned windows, overlapped windows, and pop-up windows; but the message is not sent to child windows. * Msg Specifies the message to be sent. * wParam Specifies additional message-specific information. * lParam Specifies additional message-specific information.

Returns:

The return value specifies the result of the message processing and depends on the message sent.

Related functions:

Examples:

Auto Select Listbox Entry