The following example draws an ellipse.
C++
VOID Example_DrawEllipse4(HDC hdc)
{
Graphics graphics(hdc);
// Create a Pen object.
Pen bluePen(Color(255, 0, 0, 255));
// Initialize the variables that define the ellipse.
REAL x = 0.0f;
REAL y =0.0f;
REAL width = 200.0f;
REAL height = 100.0f;
// Draw the ellipse.
graphics.DrawEllipse(&bluePen, x, y, width, height);
}
SUB GDIP_DrawEllipse (BYVAL hdc AS DWORD)
LOCAL hStatus AS LONG
LOCAL pGraphics AS DWORD
LOCAL pBluePen AS DWORD
LOCAL x AS SINGLE
LOCAL y AS SINGLE
LOCAL nWidth AS SINGLE
LOCAL nHeight AS SINGLE
hStatus = GdipCreateFromHDC(hdc, pGraphics)
' // Create a blue Pen
hStatus = GdipCreatePen1(GDIP_ARGB(255, 0, 0, 255), 1.0!, %UnitWorld, pBluePen)
' // Initialize the variables that define the ellipse.
x = 90.0!
y = 60.0!
nWidth = 200.0!
nHeight = 100.0!
' // Draw the ellipse
hStatus = GdipDrawEllipse(pGraphics, pBluePen, x, y, nWidth, nHeight)
' // Cleanup
IF pBluePen THEN GdipDeletePen(pBluePen)
IF pGraphics THEN GdipDeleteGraphics(pGraphics)
END SUB
(http://www.jose.it-berater.org/captures/GdipDrawEllipse.png)