The CombineRgn function combines two regions and stores the result in a third region. The two regions are combined according to the specified mode.
Declare Function CombineRgn Lib "gdi32" Alias "CombineRgn" (ByVal hDestRgn As Long, ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As Long, ByVal nCombineMode As Long) As Long
|Operating Systems Supported|
|Requires Windows NT 3.1 or later; Requires Windows 95 or later|
Identifies a new region with dimensions defined by combining two other regions. (This region must exist before CombineRgn is called.)
Identifies the first of two regions to be combined.
Identifies the second of two regions to be combined.
Specifies a mode indicating how the two regions will be combined. This parameter can be one of the following values:
Creates the intersection of the two combined regions.
Creates a copy of the region identified by hrgnSrc1.
Combines the parts of hrgnSrc1 that are not part of hrgnSrc2.
Creates the union of two combined regions.
Creates the union of two combined regions except for any overlapping areas.
|The return value specifies the type of the resulting region. It can be one of the following values:|
The region is empty.
The region is a single rectangle.
The region is more than a single rectangle.
No region is created.