The following example draws a 90-degree arc.
C++
VOID Example_DrawArc4(HDC hdc)
{
Graphics graphics(hdc);
// Set up the arc.
Pen redPen(Color(255, 255, 0, 0), 3);
REAL x = 0;
REAL y = 0;
REAL width = 200.0f;
REAL height = 100.0f;
REAL startAngle = 0.0f;
REAL sweepAngle = 90.0f;
// Draw the arc.
graphics.DrawArc(&redPen, x, y, width, height, startAngle, sweepAngle);
}
SUB GDIP_DrawArc (BYVAL hdc AS DWORD)
LOCAL hStatus AS LONG
LOCAL pGraphics AS DWORD
LOCAL pPen AS DWORD
hStatus = GdipCreateFromHDC(hdc, pGraphics)
' // Create a red Pen
hStatus = GdipCreatePen1(GDIP_ARGB(255, 255, 0, 0), 1.0!, %UnitWorld, pPen)
' // Draw the arc
hStatus = GdipDrawArc(pGraphics, pPen, 0, 0, 200, 100, 0, 90)
' // Cleanup
IF pPen THEN GdipDeletePen(pPen)
IF pGraphics THEN GdipDeleteGraphics(pGraphics)
END SUB
(http://www.jose.it-berater.org/captures/GdipDrawArc.png)