HRGN hrgn, // handle of region
int X, // x-coordinate of point
int Y // y-coordinate of point
);
Parameters
hrgn
Identifies the region to be examined.
X
Specifies the x-coordinate of the point.
Y
Specifies the y-coordinate of the point.
Return Values
If the specified point is in the region, the return value is nonzero.
If the specified point is not in the region, the return value is zero.
这个帮助写的太简单了,我不知道这个hrgn该怎么定义?能帮帮我吗?非常感谢