The following example creates a
path that has one curve and one ellipse. The code draws the
path with a thick yellow pen and a thin black pen. The
GdipGetPathWorldBounds funcgtionreceives the address of the thick yellow pen and calculates a bounding rectangle for the
path. Then the code draws the bounding rectangle.
C++
VOID GetBoundsExample(HDC hdc)
{
Graphics graphics(hdc);
Pen blackPen(Color(255, 0, 0, 0), 1);
Pen yellowPen(Color(255, 255, 255, 0), 10);
Pen redPen(Color(255, 255, 0, 0), 1);
Point pts[] = {Point(120,120),
Point(200,130),
Point(150,200),
Point(130,180)};
// Create a path that has one curve and one ellipse.
GraphicsPath path;
path.AddClosedCurve(pts, 4);
path.AddEllipse(120, 220, 100, 40);
// Draw the path with a thick yellow pen and a thin black pen.
graphics.DrawPath(&yellowPen, &path);
graphics.DrawPath(&blackPen, &path);
// Get the path's bounding rectangle.
RectF rect;
path.GetBounds(&rect, NULL, &yellowPen);
graphics.DrawRectangle(&redPen, rect);
}
Color(255, 0, 0, 0)Color(255, 255, 0, 0)
SUB GDIP_GetPathWorldBounds (BYVAL hdc AS DWORD)
LOCAL hStatus AS LONG
LOCAL pGraphics AS DWORD
LOCAL pPath AS DWORD
LOCAL pBlackPen AS DWORD
LOCAL pYellowPen AS DWORD
LOCAL pRedPen AS DWORD
LOCAL rcf AS RECTF
DIM pts(3) AS POINTF
hStatus = GdipCreateFromHDC(hdc, pGraphics)
hStatus = GdipCreatePen1(GDIP_ARGB(255, 0, 0, 0), 1, %UnitWorld, pBlackPen)
hStatus = GdipCreatePen1(GDIP_ARGB(255, 255, 255, 0), 1, %UnitWorld, pYellowPen)
hStatus = GdipCreatePen1(GDIP_ARGB(255, 255, 0, 0), 1, %UnitWorld, pRedPen)
pts(0).x = 120 : pts(0).y = 120
pts(1).x = 200 : pts(1).y = 130
pts(2).x = 150 : pts(2).y = 200
pts(3).x = 130 : pts(3).y = 180
' // Create a path that has one curve and one ellipse.
hStatus = GdipCreatePath(%FillModeAlternate, pPath)
hStatus = GdipAddPathClosedCurve(pPath, pts(0), 4)
hStatus = GdipAddPathEllipse(pPath, 120, 220, 100, 40)
' // Draw the path with a thick yellow pen and a thin black pen.
hStatus = GdipDrawPath(pGraphics, pYellowPen, pPath)
hStatus = GdipDrawPath(pGraphics, pBlackPen, pPath)
' // Get the path's bounding rectangle.
hStatus = GdipGetPathWorldBounds(pPath, rcf, %NULL, pYellowPen)
hStatus = GdipDrawRectangle(pGraphics, pRedPen, rcf.x, rcf.y, rcf.Width, rcf.Height)
' // Cleanup
IF pBlackPen THEN GdipDeletePen(pBlackPen)
IF pYellowPen THEN GdipDeletePen(pYellowPen)
IF pRedPen THEN GdipDeletePen(pRedPen)
IF pPath THEN GdipDeletePath(pPath)
IF pGraphics THEN GdipDeleteGraphics(pGraphics)
END SUB
(http://www.jose.it-berater.org/captures/GdipgetPathWorldBounds.png)