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IntersectClipRect

The IntersectClipRect function creates a new clipping region from the intersection of the current clipping region and the specified rectangle.

VB4-32,5,6
Declare Function IntersectClipRect Lib "gdi32" Alias "IntersectClipRect" (ByVal hdc As Long, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long

VB.NET
System.Drawing.Region.Intersect

Operating Systems Supported
Requires Windows NT 3.1 or later; Requires Windows 95 or later

Library
Gdi32

Parameter Information
- hdc
Identifies the device context.

- nLeftRect
Specifies the logical x-coordinate of the upper-left corner of the rectangle.

- nTopRect
Specifies the logical y-coordinate of the upper-left corner of the rectangle.

- nRightRect
Specifies the logical x-coordinate of the lower-right corner of the rectangle.

- nBottomRect
Specifies the logical y-coordinate of the lower-right corner of the rectangle.

Return Values
If the function succeeds, the return value specifies the new clipping regionís type and can be any one of the following values:
NULLREGION
Region is empty.

SIMPLEREGION
Region is a single rectangle.

COMPLEXREGION
Region is more than one rectangle.

ERROR
An error occurred. (The current clipping region is unaffected.)

Last update: 07 April 2006