#include <windows.h> BOOL32 ScaleViewportExtEx ( HDC32 hdc, INT32 xNum, INT32 xDenom, INT32 yNum, INT32 yDenom, LPSIZE32 size );
U16 | Value |
0 | yDenom |
1 | yNum |
2 | xDenom |
3 | xNum |
width = (width * xNum) / xDenom; height = (height * yNum) / yDenom;see this file for explanation.