The following example creates a
CustomLineCap and sets its start and end stroke caps. It then assigns the custom cap to a
Pen and draws a line.
C++
VOID Example_SetStrokeCaps(HDC hdc)
{
Graphics graphics(hdc);
//Create a Path, and add two lines to it.
Point points[3] = {Point(-15, -15), Point(0, 0), Point(15, -15)};
GraphicsPath capPath;
capPath.AddLines(points, 3);
// Create a CustomLineCap object.
CustomLineCap custCap(NULL, &capPath);
// Set the start and end caps for custCap.
custCap.SetStrokeCaps(LineCapTriangle, LineCapRound);
// Create a Pen object, assign startStrokeCap and endStrokeCap as the
// start and end caps, and draw a line.
Pen strokeCapPen(Color(255, 255, 0, 255), 5.0f);
strokeCapPen.SetCustomEndCap(&custCap);
graphics.DrawLine(&strokeCapPen, Point(100, 100), Point(300, 100));
}
SUB GDIP_SetStrokeCaps (BYVAL hdc AS DWORD)
LOCAL hStatus AS LONG
LOCAL pGraphics AS DWORD
LOCAL pCapPath AS DWORD
LOCAL pCustCap AS DWORD
LOCAL pStrokeCapPen AS DWORD
DIM PointsF(2) AS POINTF
hStatus = GdipCreateFromHDC(hdc, pGraphics)
' // Create a path and add two lines to it.
PointsF(0).x = -15 : PointsF(0).y = -15
PointsF(1).x = 0 : PointsF(1).y = 0
PointsF(2).x = 15 : PointsF(2).y = -15
hStatus = GdipCreatePath(%FillModeAlternate, pCapPath)
hStatus = GdipAddPathLine2(pCapPath, PointsF(0), 3)
' // Create a CustomLineCap
hStatus = GdipCreateCustomLineCap(%NULL, pCapPath, %LineCapFlat, 0, pCustCap)
' // Set the start and end caps for custCap.
hStatus = GdipSetCustomLineCapStrokeCaps(pCustCap, %LineCapTriangle, %LineCapRound)
' // Assign custCap to a Pen object and draw a line.
hStatus = GdipCreatePen1(GDIP_ARGB(255, 255, 0, 255), 5.0!, %UnitWorld, pStrokeCapPen)
hStatus = GdipSetPenCustomEndCap(pStrokeCapPen, pCustCap)
hStatus = GdipDrawLineI(pGraphics, pStrokeCapPen, 0, 0, 200, 200)
' // Cleanup
IF pStrokeCapPen THEN GdipDeletePen(pStrokeCapPen)
IF pCustCap THEN GdipDeleteCustomLineCap(pCustCap)
IF pCapPath THEN GdipDeletePath(pCapPath)
IF pGraphics THEN GdipDeleteGraphics(pGraphics)
END SUB
(http://www.jose.it-berater.org/captures/GdipSetCustomLineCapStrokeCaps.png)