Click above to get retro games delivered to your door ever month!

ScaleViewportExt     Modify Viewport Extents

DWORD ScaleViewportExt(hDC, Xnum, Xdenom, Ynum, Ydenom)
HDC hDC;
short Xnum;
short Xdenom;
short Ynum;
short Ydenom;

Returns:        Previous viewport extents. Y in high order word, X in
                low order word.

Note:           The following formula is used:

                    xNewVE = (xOldVE x Xnum) / Xdenom
                    yNewVE = (yOldVE x Ynum) / Ydenom