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CombineRgn The CombineRgn function combines two regions and stores the result in a third region. The two regions are combined according to the specified mode.
VB4-32,5,6
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 |
VB.NET
System.Drawing.Region |
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Operating Systems Supported |
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Requires Windows NT 3.1 or later; Requires Windows 95 or later |
- hrgnDest
Identifies a new region with dimensions defined by combining two other regions. (This region must exist before CombineRgn is called.)
- hrgnSrc1
Identifies the first of two regions to be combined.
- hrgnSrc2
Identifies the second of two regions to be combined.
- fnCombineMode
Specifies a mode indicating how the two regions will be combined. This parameter can be one of the following values:
RGN_AND
Creates the intersection of the two combined regions.
RGN_COPY
Creates a copy of the region identified by hrgnSrc1.
RGN_DIFF
Combines the parts of hrgnSrc1 that are not part of hrgnSrc2.
RGN_OR
Creates the union of two combined regions.
RGN_XOR
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:
NULLREGION
The region is empty.
SIMPLEREGION
The region is a single rectangle.
COMPLEXREGION
The region is more than a single rectangle.
ERROR
No region is created. |
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