GdipAddPathPolygonfunction
Adds a polygon to this path.
Syntax
FUNCTION GdipAddPathPolygon (BYVAL path AS GpPath PTR, BYVAL points AS GpPointF PTR, BYVAL count AS INT_) AS GpStatusGdipAddPathPolygonI — one description covers them all.Parameters
| Name | Description | |
|---|---|---|
path | [in] Pointer to the GraphicsPath object. | |
points | [in] Pointer to an array of points that specifies the vertices of the polygon. | |
count | [in] Long integer value that specifies the number of elements in the points array. |
Description
Adds a polygon to this path.
Example
' ======================================================================================== ' This example draws a closed polygon using GdipAddPathPolygon. ' ======================================================================================== SUB Example_DrawPolygon (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)
' // Define polygon points DIM pts(0 TO 4) AS GpPointF pts(0).x = 100 : pts(0).y = 50 pts(1).x = 200 : pts(1).y = 80 pts(2).x = 180 : pts(2).y = 160 pts(3).x = 120 : pts(3).y = 160 pts(4).x = 80 : pts(4).y = 100
' // Add polygon to path hStatus = GdipAddPathPolygon(path, @pts(0), 5)
' // Create pen DIM pen AS GpPen PTR hStatus = GdipCreatePen1(ARGB_FORESTGREEN, 2, UnitWorld, @pen)
' // Draw path hStatus = GdipDrawPath(graphics, pen, path)
' // Cleanup IF pen THEN GdipDeleteBrush(pen) IF path THEN GdipDeletePath(path) IF graphics THEN GdipDeleteGraphics(graphics)
END SUB ' ========================================================================================
Reference
- Defined in AfxNova/AfxGdiPlus.bi:2022
- Documented in Graphics/GdiPlus Flat Api/GdiPlusGraphicsPath.md
- Topic: GraphicsPath Functions