The ScaleViewportExtEx function modifies the viewport for a device context (DC) by using the ratios formed by the specified multiplicands and divisors.
BOOL ScaleViewportExtEx(
HDC hdc, |
// handle of device context |
int Xnum, |
// horizontal multiplicand |
int Xdenom, |
// horizontal divisor |
int Ynum, |
// vertical multiplicand |
int Ydenom, |
// vertical divisor |
LPSIZE lpSize |
// address of previous viewport extents |
); |
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
The viewport extents are modified as follows:
xNewVE = (xOldVE * Xnum) / Xdenom yNewVE = (yOldVE * Ynum) / Ydenom
file: /Techref/os/win/api/win32/func/src/f74_17.htm, 3KB, , updated: 2000/4/7 11:19, local time: 2024/11/11 15:53,
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