Hi Anyone knows if it is necessery to clean a buffer or something when using the WM_LBUTTONDOWN and WM_LBUTTONUP ???? When the program begins he goes directly into the case statments as if i was pressing the mouse button.... The WM_KEYUP and other are working just fine..... ideias??? thanks Bruno

maybe you are forgetting a break; in the previous switch?

    switch msg{case WM_CREATE:dostuff();case WM_LBUTTONDOWN:bla();break;...}    

That was the problem.. dumb me ))

thanks
Bruno