GdipReversePathfunction

Reverses the order of the points that define this path's lines and curves.

Syntax

FUNCTION GdipReversePath (BYVAL path AS GpPath PTR) AS GpStatus

Parameters

Description

Reverses the order of the points that define this path's lines and curves.

Example

' ======================================================================================== ' This example draws a path before and after reversing it using GdipReversePath. ' ======================================================================================== SUB Example_ReversePath (BYVAL hdc AS HDC)

DIM hStatus AS LONG

' // Create a graphics object from the device context DIM graphics AS GpGraphics PTR hStatus = GdipCreateFromHDC(hdc, @graphics)

' // Get the DPI scaling ratios DIM dpiX AS SINGLE hStatus = GdipGetDpiX(graphics, @dpiX) DIM rxRatio AS SINGLE = dpiX / 96 DIM dpiY AS SINGLE hStatus = GdipGetDpiY(graphics, @dpiY) Dim ryRatio AS SINGLE = dpiY / 96 ' // Set the scale transform hStatus = GdipScaleWorldTransform(graphics, rxRatio, ryRatio, MatrixOrderPrepend)

' // Create GraphicsPath DIM path AS GpPath PTR hStatus = GdipCreatePath(FillModeAlternate, @path)

' // Add a triangle hStatus = GdipAddPathLine(path, 100, 100, 200, 100) hStatus = GdipAddPathLine(path, 200, 100, 150, 200) hStatus = GdipClosePathFigure(path)

' // Draw original path in blue DIM penBlue AS GpPen PTR hStatus = GdipCreatePen1(ARGB_BLUE, 2, UnitWorld, @penBlue) hStatus = GdipDrawPath(graphics, penBlue, path)

' // Reverse the path hStatus = GdipReversePath(path)

' // Offset the path for visibility DIM matrix AS GpMatrix PTR hStatus = GdipCreateMatrix(@matrix) hStatus = GdipTranslateMatrix(matrix, 120, 0, MatrixOrderAppend) hStatus = GdipTransformPath(path, matrix) GdipDeleteMatrix(matrix)

' // Draw reversed path in red DIM penRed AS GpPen PTR hStatus = GdipCreatePen1(ARGB_RED, 2, UnitWorld, @penRed) hStatus = GdipDrawPath(graphics, penRed, path)

' // Cleanup IF penBlue THEN GdipDeleteBrush(penBlue) IF penRed THEN GdipDeleteBrush(penRed) IF path THEN GdipDeletePath(path) IF graphics THEN GdipDeleteGraphics(graphics)

END SUB ' ========================================================================================

Reference

• Defined in AfxNova/AfxGdiPlus.bi:2002
• Documented in Graphics/GdiPlus Flat Api/GdiPlusGraphicsPath.md
• Topic: GraphicsPath Functions