Sorry about the other post Hisham, I got this from searching the UT and making some VERY MINOR changes to some of the examples I found (original posts were from Ed, Cetin, and Larry I think).

I believe this is what you are looking for (it checks to see if the calculator is running, and if so, closes it):

*!*See if Calculator is running, and if so, close it
DECLARE INTEGER ShowWindow IN win32api INTEGER,INTEGER
DECLARE INTEGER BringWindowToTop IN Win32API INTEGER hWnd

*!* To see if Outlook is running
*lnHand    =IsRunning("Outlook")
*!* To see if Calculator is running
lnHand=CheckWin("Calculator")

#DEFINE WM_QUIT 0x12

DECLARE SHORT PostMessage In USER32.DLL ;
   INTEGER hWnd, ;
   INTEGER uMsg, ;
   INTEGER wParam, ;
   INTEGER lParam

IF lnHand>0
	=PostMessage(lnHand,WM_QUIT,0,0)
ENDIF
RETURN

PROCEDURE CheckWin
	PARAMETER tcTitle

	* Routine which sees if an application is active by looking for its
	* Window title
	* expC1 Window title

	DECLARE INTEGER FindWindow in Win32API as FindWindow STRING, STRING
        lnhand=FindWindow(0,tcTitle)
        *!*Display the window handle to the screen
        ? lnhand
        *!*To return the window handle:
        RETURN lnhand
        *!*To return .t. or .f. it is open:
        *RETURN IIF(FindWindow(0,tcTitle)>0,.T.,.F.)

Tracy

>Dear All,
>
>I want to know how to capture the other windows app. forms and close them by sending the name of the form I do understand that there is an API funtion to do that but I forget it can some one reminde me.
>
>
>thanks guys
>
>Hisham