Region.Complement(const Region*) method
Applies to: desktop apps only
The Region::Complement method updates this region to the portion of another region that does not intersect this region.
Syntax
Status Complement(
[in] const Region *region
);
Parameters
Return value
Type:
Type: Status****
If the method succeeds, it returns Ok, which is an element of the Status enumeration.
If the method fails, it returns one of the other elements of the Status enumeration.
Examples
The following example creates a region from a rectangle and a region from a path. Then the code uses the path region to update the rectangular region.
VOID Example_ComplementReg(HDC hdc)
{
Graphics graphics(hdc);
SolidBrush solidBrush(Color(255, 255, 0, 0));
Point points[] = {
Point(110, 20),
Point(120, 30),
Point(100, 60),
Point(120, 70),
Point(150, 60),
Point(140, 10)};
Rect rect(65, 15, 70, 45);
GraphicsPath path;
path.AddClosedCurve(points, 6);
// Create a region from a rectangle.
Region rectRegion(rect);
// Create a region from a path.
Region pathRegion(&path);
// Update the rectangular region so that it consists of all points inside
// the path region but outside the rectangular region.
rectRegion.Complement(&pathRegion);
graphics.FillRegion(&solidBrush, &rectRegion);
}
Requirements
Minimum supported client |
Windows XP, Windows 2000 Professional |
Minimum supported server |
Windows 2000 Server |
Product |
GDI+ 1.0 |
Header |
Gdiplusheaders.h (include Gdiplus.h) |
Library |
Gdiplus.lib |
DLL |
Gdiplus.dll |
See also
Send comments about this topic to Microsoft
Build date: 3/6/2012