void fghComputeClientAreaFromWindowRect ( const SFG_Window *window, RECT *windowRect, BOOL wantPosOutside );
RECT fghGetClientArea ( const SFG_Window *window, BOOL wantPosOutside );
void fghGetBorderWidth(const DWORD windowStyle, int* xBorderWidth, int* yBorderWidth);
void fghComputeClientAreaFromWindowRect ( const SFG_Window *window, RECT *windowRect, BOOL wantPosOutside );
RECT fghGetClientArea ( const SFG_Window *window, BOOL wantPosOutside );
void fghGetBorderWidth(const DWORD windowStyle, int* xBorderWidth, int* yBorderWidth);