int GetRgnBox(hrgn, lprc) | |||||
HRGN hrgn; | /* handle of a region | */ | |||
LPRECT lprc; | /* address of structure that receives the bounding rect | */ |
The GetRgnBox function retrieves the bounding rectangle of the specified region.
hrgn
Identifies the region.
lprc
Points to a RECT structure that receives the bounding rectangle.
The return value specifies the region's complexity. It can be any of the following values.
Value | Meaning |
NULLREGION | New region is empty. |
SIMPLEREGION | New region is a single rectangle. |
COMPLEXREGION | New region is more than a single rectangle. |
The return value is 0 if the hrgn parameter does not specify a valid region.