PtInRegion

The PtInRegion function determines whether the specified point is inside the specified region.

BOOL PtInRegion(
  HRGN hrgn,  // handle to region
  int X,      // x-coordinate of point
  int Y       // y-coordinate of point
);
 

Parameters

hrgn

Handle to 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.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in wingdi.h.
  Import Library: Use gdi32.lib.

See Also

Regions Overview, Region Functions, RectInRegion