The following example creates a region from a rectangle and then fills the region.
C++
VOID Example_FillRegion(HDC hdc)
{
Graphics graphics(hdc);
// Create a SolidBrush object.
SolidBrush blackBrush(Color(255, 0, 0, 0));
// Create a Region object from a rectangle.
Region ellipseRegion(Rect(0, 0, 200, 100));
// Fill the region.
graphics.FillRegion(&blackBrush, &ellipseRegion);
}
SUB GDIP_FillRegion (BYVAL hdc AS DWORD)
LOCAL hStatus AS LONG
LOCAL pGraphics AS DWORD
LOCAL pBrush AS DWORD
LOCAL pRegion AS DWORD
LOCAL rcf AS RECTF
hStatus = GdipCreateFromHDC(hdc, pGraphics)
' // Create a SolidBrush
hStatus = GdipCreateSolidFill(GDIP_ARGB(255, 0, 0, 0), pBrush)
' // Create a Region object from a rectangle.
rcf.x = 0 : rcf.y = 0 : rcf.Width = 200 : rcf.Height = 100
hStatus = GdipCreateRegionRect(rcf, pRegion)
' // Fill the rectangle.
hStatus = GdipFillRegion(pGraphics, pBrush, pRegion)
' // Cleanup
IF pRegion THEN GdipDeleteRegion(pRegion)
IF pBrush THEN GdipDeleteBrush(pBrush)
IF pGraphics THEN GdipDeleteGraphics(pGraphics)
END SUB
(http://www.jose.it-berater.org/captures/GdipFillRegion.png)