Thread: close Embed map monkey?

I'm trying to embed map monkey into my front end written in vb6.

this is how i embed map monkey into a picturebox and that works great

Code:

Shell gpsPath        
Do Until hProgramWnd            
   hProgramWnd = FindWindow(gpslpClassName, gpslpWindowName)                       
   DoEvents
Loop
        
SetParent hProgramWnd, Form1.picGPS.hWnd

but when i trying to exit map monkey whit this code it wont end, what are i doing wrong?

Code:

SendMessage hProgramWnd, WM_CLOSE, 0, 0
DoEvents