POSTWINMSG Method (System)
Description
This method uses the Windows API PostMessage function to place a message in the message queue associated with the thread that created the target window and returns without waiting for the thread to process the message.
Syntax
SuccessFlag = Exec_Method( "SYSTEM". "POSTWINMSG", hwnd, uMsg, wParam, lParam )
Parameters
| Name | Required | Description |
|---|---|---|
| hwnd | Yes | A handle to the window whose window procedure is to receive the message. |
| uMsg | Yes | Integer specifying the message to be posted. |
| wParam | No | Message-specific integer value. Defaults to 0. |
| IParam | No | Message-specific integer value. Defaults to 0. |
Returns
TRUE$ if the message was posted successfully, or FALSE$ otherwise.
Remarks
Equates for the common window messages can be found the MSWin_WindowMessage_Equates insert record.
This method uses the Windows API PostMessage function internally – for further information please see the MSDN website.
Example
//// Post a WM_CLOSE message to a form (this is basically the same as// //// calling it's CLOSE method).// $Insert MSWin_WindowMessage_Equates hwnd = Get_Property( "MYWIN", "HANDLE" ) uMsg = WM_CLOSE$ wParam = 0 lParam = 0 RetVal = Exec_Method( "SYSTEM", "POSTWINMSG", hwnd, uMsg, wParam, lParam )
See Also
SYSTEM SENDWINMSG method, Common GUI QUALIFYWINEVENT method, Common GUI WINMSG event.