ScaleWindowExt怎么用
virtual CSize ScaleWindowExt( int xNum, int xDenom, int yNum, int yDenom );
返回值
The previous window extents (in logical units) as a CSize object.
返回一个CSize对象,是用设备单位表示的前一次窗口扩展。
参数说明
xNum
Specifies the amount by which to multiply the current x-extent.
指定当前X扩展的倍数。
xDenom
Specifies the amount by which to divide the result of multiplying the current x-extent by the value of the xNum parameter.
去除xNum扩展后的结果的值。(指定用来与视口当前X方向范围相除的整数)
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看不懂,求解释