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CGpGraphicsPathIterator.CopyDatamethod

Copies a subset of the path's data points to a **GpPointF** array and copies a subset of the path's point types to a byte array.

GraphicsmethodCGpGraphics.incdocumented

Syntax

FUNCTION CopyData (BYVAL pts AS GpPointF PTR, BYVAL types AS BYTE PTR, BYVAL startIndex AS INT_, BYVAL endIndex AS INT_) AS INT

Parameters

Name		Description
`pts`		Pointer to an array that receives a subset of the path's data points.
`types`		Pointer to an array that receives a subset of the path's point types.
`startIndex`		Integer that specifies the starting index of the points and types to be copied.
`endIndex`		Integer that specifies the ending index of the points and types to be copied.

Return value

This method returns the number of points copied. This is the same as the number of types copied.

Description

Copies a subset of the path's data points to a GpPointF array and copies a subset of the path's point types to a byte array.

Example

' ======================================================================================== ' Creates a path with two figures. ' Uses GdipPathIterCopyData to extract the first three points and their types. ' Draws the extracted segment and displays point info in the window. ' ======================================================================================== SUB Example_PathIterCopyData (BYVAL hdc AS HDC)

' // Create a graphics object from the window device context DIM graphics AS CGpGraphics = hdc ' // Set the scale transform graphics.ScaleTransformForDpi

' // Create path with two figures DIM path AS CGpGraphicsPath path.AddLine(20, 20, 120, 20) path.AddLine(120, 20, 70, 100) path.CloseFigure()

path.StartFigure() path.AddLine(150, 30, 200, 80) path.AddLine(200, 80, 150, 130)

' // Create iterator and copy subset (indices 0 to 2) DIM iterator AS CGpGraphicsPathIterator = CGpGraphicsPathIterator(@path) DIM points(0 TO 2) AS GpPointF DIM types(0 TO 2) AS BYTE DIM resultCount AS LONG resultCount = iterator.CopyData(@points(0), @types(0), 0, 2)

' // Draw copied segment DIM pen AS CGpPen = CGpPen(ARGB_BLUE, 2.0, UnitPixel) graphics.DrawLines(@pen, @points(0), resultCount)

' // Display point info DIM font AS CGpFont = CGpFont("Arial", AfxGdipPointsToPixels(12, TRUE), FontStyleRegular, UnitPixel) DIM brush AS CGpSolidBrush = ARGB_BLACK

DIM yOffset AS SINGLE = 140 FOR i AS LONG = 0 TO resultCount - 1

DIM info AS WSTRING * 128
  info = "Point " & i & ": (" & points(i).x & ", " & points(i).y & ") Type=" & types(i)
  DIM layout AS GpRectF = (10.0, yOffset, 300.0, 20.0)
  graphics.DrawString(info, -1, @font, @layout, @brush)
  yOffset += 20.0

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

Reference

Include file CGpGraphics.inc
Defined in AfxNova/CGpPath.inc:755
Documented in Graphics/GdiPlus Classes/CGpGraphics Classes.md
Topic: CGpGraphics Class