GDI+: GdipResetClip

[José Roca]

The following example creates a Graphics object and sets its clipping region to a rectangle. The code fills two ellipses that intersect the rectangular clipping region. The first ellipse is clipped, but the second ellipse is not clipped because it is filled after a call to GdipResetClip.

C++

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VOID Example_ResetClip(HDC hdc)
{
   Graphics graphics(hdc);

   // Set the clipping region, and draw its outline.
   graphics.SetClip(Rect(100, 50, 200, 120));
   Pen blackPen(Color(255, 0, 0, 0), 2.0f);
   graphics.DrawRectangle(&blackPen, 100, 50, 200, 120);

   // Fill a clipped ellipse in red.
   SolidBrush redBrush(Color(255, 255, 0, 0));
   graphics.FillEllipse(&redBrush, 80, 40, 100, 70);

   // Reset the clipping region.
   graphics.ResetClip();

   // Fill an unclipped ellipse with blue.
   SolidBrush blueBrush(Color(255, 0, 0, 255));
   graphics.FillEllipse(&blueBrush, 160, 150, 100, 60);
}


PowerBASIC

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SUB GDIP_ResetClip (BYVAL hdc AS DWORD)

   LOCAL hStatus AS LONG
   LOCAL pGraphics AS DWORD
   LOCAL pRedBrush AS DWORD
   LOCAL pBlueBrush AS DWORD
   LOCAL pBlackPen AS DWORD

   hStatus = GdipCreateFromHDC(hdc, pGraphics)

   ' // Set the clipping region, and draw its outline.
   hStatus = GdipSetClipRect(pGraphics, 100, 50, 200, 120, %CombineModeReplace)
   hStatus = GdipCreatePen1(GDIP_ARGB(255, 0, 0, 0), 2, %UnitPixel, pBlackPen)
   hStatus = GdipDrawRectangle(pGraphics, pBlackPen, 100, 50, 200, 120)

   ' // Fill a clipped ellipse in red.
   hStatus = GdipCreateSolidFill(GDIP_ARGB(255, 255, 0, 0), pRedBrush)
   hStatus = GdipFillEllipse(pGraphics, pRedBrush, 80, 40, 100, 70)

   ' // Reset the clipping region.
   hStatus = GdipResetClip(pGraphics)

   ' // Fill an unclipped ellipse with blue.
   hStatus = GdipCreateSolidFill(GDIP_ARGB(255, 0, 0, 255), pBlueBrush)
   hStatus = GdipFillEllipse(pGraphics, pBlueBrush, 160, 150, 100, 60)

   ' // Cleanup
   IF pBlackPen THEN GdipDeletePen(pBlackPen)
   IF pBlueBrush THEN GdipDeleteBrush(pBlueBrush)
   IF pRedBrush THEN GdipDeleteBrush(pRedBrush)
   IF pGraphics THEN GdipDeleteGraphics(pGraphics)

END SUB