: client-area>RECT ( hwnd -- RECT )
RECT <struct>
[ GetClientRect win32-error=0/f ]
- [ >c-ptr POINT-array-cast [ ClientToScreen drop ] with each ]
+ [ >c-ptr POINT cast-array [ ClientToScreen drop ] with each ]
[ nip ] 2tri ;
: hwnd>RECT ( hwnd -- RECT )