Scroll to navigation

CombineRgn(3w) Wine API CombineRgn(3w)


CombineRgn (GDI32.@)


INT CombineRgn
HRGN hDest,
HRGN hSrc1,
HRGN hSrc2,
INT mode


Combines two regions with the specified operation and stores the result in the specified destination region.


hDest [In] The region that receives the combined result.
hSrc1 [In] The first source region.
hSrc2 [In] The second source region.
mode [In] The way in which the source regions will be combined. See notes.


Success: NULLREGION - The new region is empty. SIMPLEREGION - The new region can be represented by one rectangle. COMPLEXREGION - The new region can only be represented by more than one rectangle.
Failure: ERROR.


The two source regions can be the same region. The mode can be one of the following:

RGN_AND - Intersection of the regions

RGN_OR - Union of the regions

RGN_XOR - Unions of the regions minus any intersection.

RGN_DIFF - Difference (subtraction) of the regions.


Declared in "windowsx.h".
Implemented in "dlls/gdi32/region.c".
Debug channel "region".
Oct 2012 Wine API