Delphi下的GDI+编程[5] 绘制直线-自定义虚线

本例效果图：

 

//自定义虚线样式
var
  g: TGPGraphics;
  p: TGPPen;
const
  dash: array[0..3] of Single = (5,2,15,10); {虚线样式数组, 数组维数大小任意}
begin
  g := TGPGraphics.Create(Canvas.Handle);
  g.Clear(aclWhite);
  p := TGPPen.Create(MakeColor(255,255,0,0),3);

  g.DrawLine(p, 11, 11, 333, 11);
  p.SetDashPattern(@dash, Length(dash)); {设置虚线}
  g.DrawLine(p, 11, 33, 333, 33); 

  p.Free;
  g.Free;
end;