RectInRegion (Compact 2013)
This function determines whether any part of the specified rectangle is within the boundaries of a region.
const RECT* lprc
[in] Handle to the region.
[in] Long pointer to a RECT structure that contains the coordinates of the rectangle.
The lower and right edges of the rectangle are not included.
Nonzero indicates that any part of the specified rectangle lies within the boundaries of the region.
Zero indicates that no part of the specified rectangle lies within the boundaries of the region.