The following example creates a red pen and draws a line. The code then sets the pen's color to blue and draws a second line.
C++
VOID Example_SetColor(HDC hdc)
{
Graphics graphics(hdc);
// Create a red pen, and use it to draw a line.
Pen pen(Color(255, 255, 0, 0), 5);
graphics.DrawLine(&pen, 0, 0, 200, 100);
// Change the pen's color to blue, and draw a second line.
pen.SetColor(Color(255, 0, 0, 255));
graphics.DrawLine(&pen, 0, 40, 200, 140);
}
SUB GDIP_SetPenColor (BYVAL hdc AS DWORD)
LOCAL hStatus AS LONG
LOCAL pGraphics AS DWORD
LOCAL pPen AS DWORD
hStatus = GdipCreateFromHDC(hdc, pGraphics)
' // Create a red pen, and use it to draw a line.
hStatus = GdipCreatePen1(GDIP_ARGB(255, 255, 0, 0), 5, %UnitWorld, pPen)
hStatus = GdipDrawLineI(pGraphics, pPen, 0, 0, 200, 100)
' // Change the pen's color to blue, and draw a second line.
hStatus = GdipSetPenColor(pPen, GDIP_ARGB(255, 0, 0, 255))
hStatus = GdipDrawLineI(pGraphics, pPen, 0, 40, 200, 140)
' // Cleanup
IF pPen THEN GdipDeletePen(pPen)
IF pGraphics THEN GdipDeleteGraphics(pGraphics)
END SUB
(http://www.jose.it-berater.org/captures/GdipSetPenColor.png)