PostAppMessage

Syntax

BOOL PostAppMessage(hTask,wMsg,wParam,lParam)

This function posts a message to an application identified by a task handle, and then returns without waiting for the application to process the message. The application receiving the message obtains the message by calling the GetMessage or PeekMessage function. The hWnd parameter of the returned MSG structure is NULL.

Parameter Type/Description  

hTask HANDLE Identifies the task that is to receive the message. The GetCurrentTask function returns this handle.  
wMsg WORD Specifies the type of message posted.  
wParam WORD Specifies additional message information.  
lParam DWORD Specifies additional message information.  

Return Value

The return value specifies whether or not the message is posted. It is nonzero if the message is posted. Otherwise, it is zero.