描述

 

返回用于连接多线同GraphicsPath对象LineJoin风格.

 

C++ Syntax

 

 

FreeBASIC 语法

 

 

参数

 

该方法没有参数.

 

返回值

 

的CustomLineCap对象使用路径和行程确定端盖.脑卒中是包含在一个GraphicsPath对象,它可以包含一个以上的图.如果在GraphicsPath对象的多个人物,行程加入决定如何显示他们的关节.

 

引用文件

 

CGpLineCaps.inc (include CGdiPlus.inc)

 

示例

 

' ========================================================================================

' The following example creates a CustomLineCap object with a stroke join. It then gets the

' stroke join and assigns it as the line join of a Pen object that it then uses to draw a line.

' ========================================================================================

SUB Example_GetStrokeJoin (BYVAL hdc AS HDC)

 

  ' // Create a graphics object from the window device context

  DIM graphics AS CGpGraphics = hdc

  ' // Get the DPI scaling ratio

  DIM rxRatio AS SINGLE = graphics.GetDpiX / 96

  DIM ryRatio AS SINGLE = graphics.GetDpiY / 96

  ' // Set the scale transform

  graphics.ScaleTransform(rxRatio, ryRatio)

 

  ' // Create a Path object, and add two lines to it

  DIM pts(0 TO 2) AS GpPoint = {GDIP_POINT(-15, -15), GDIP_POINT(0, 0), GDIP_POINT(15, -15)}

'#ifdef __FB_64BIT__

'   DIM pts(0 TO 2) AS GpPoint = {(-15, -15), (0, 0), (15, -15)}

'#else

'   ' // With the 32-bit compiler, the above syntax can't be used because a mess in the

'   ' // FB headers for GdiPlus: GpPoint is defined as Point in 64 bit and as Point_ in 32 bit.

'   DIM pts(0 TO 2) AS GpPoint

'   pts(0).x = -15 : pts(0).y = -15 : pts(2).x = 15: pts(2).y = -15

'#endif

 

  DIM capPath AS CGpGraphicsPath = FillModeAlternate

  capPath.AddLines(@pts(0), 3)

 

  ' // Create a CustomLineCap object, and set its base cap to LineCapRound

  DIM custCap AS CGpCustomLineCap = CGpCustomLineCap(NULL, @capPath)

 

' // Set the start and end caps for custCap

  custCap.SetStrokeJoin(LineJoinBevel)

 

  ' // Get the stroke join from custCap

  DIM strokeJoin AS LineJoin = custCap.GetStrokeJoin

 

' // Create a Pen object, assign strokeJoin as the line join,

' // and draw two joined lines in a path.

  DIM strokeJoinPen AS CGpPen = CGpPen(GDIP_ARGB(255, 255, 0, 0), 15.1)

  strokeJoinPen.SetLineJoin(strokeJoin)

  DIM joinPath AS CGpGraphicsPath

  joinPath.AddLine(10, 10, 10, 200)

  joinPath.AddLine(10, 200, 200, 200)

  graphics.DrawPath(@strokeJoinPen, @joinPath)

 

END SUB

' ========================================================================================