CallWindowProc won't comile with Borland.

[aewarnick]

//declaration:
WNDPROC formsWndProc;

//in Form f:
formProc= (WNDPROC)::SetWindowLong(hwnd, GWL_WNDPROC, (long)WindowProcedure);

//initialization:
formsWndProc= (WNDPROC)f.formProc;

//does not compile:
::CallWindowProc(formsWndProc, hwnd, message, wParam, lParam);

error:
[C++ Error] main.cpp(126): E2034 Cannot convert 'long (__stdcall *)(void *,unsigned int,unsigned int,long)' to 'int (__stdcall *)()'