C# GDI+ 画虚线

Question

直接这样写 画出来的是直线。 
pen.DashStyle = DashStyle.Custom;
graphics.DrawLine(pen, point1, point2);怎么去自定义这个DashStyle.Custom呢？

Answer 1

Graphics graphics(this->GetDC()->m_hDC); 
Pen pen(Color(255, 0, 0, 0),1.f); 
REAL dashVals[2] = {0.3f,5.0f }; pen.SetDashPattern(dashVals, 2); 
pen.SetDashOffset(70); PointF p1(150, 400); 
PointF p2(190, 400); 
PointF p3(256, 310); 
graphics.DrawLine(&pen,p1,p2 ); 
graphics.DrawLine(&pen,p2,p3 ); 

Answer 2

   Graphics _Graphcis = Graphics.FromHwnd(this.Handle);
            Pen _Pen = new Pen(Brushes.Yellow);
            _Pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Custom;
            _Pen.DashPattern = new float[] { 5f,10f };          
   
            _Graphcis.DrawLine(_Pen, 100,100, 200,100);