// 画速度曲线
Graphics g = e.Graphics;
g.DrawLine(Pens.White, 40 , picChart.ClientRectangle.Height - 10 , picChart.Width - 40 , picChart.ClientRectangle.Height - 10 );
g.DrawLine(Pens.White, 40 , picChart.ClientRectangle.Height - 50 , picChart.Width - 40 , picChart.ClientRectangle.Height - 50 );
g.DrawLine(Pens.White, 40 , picChart.ClientRectangle.Height - 90 , picChart.Width - 40 , picChart.ClientRectangle.Height - 90 );
g.DrawLine(Pens.White, 40 , picChart.ClientRectangle.Height - 130 , picChart.Width - 40 , picChart.ClientRectangle.Height - 130 );
Pen p = new Pen(Color.White, 1 );
// p.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
// p.DashCap = System.Drawing.Drawing2D.DashCap.Flat;
AdjustableArrowCap aac = new AdjustableArrowCap( 5 , 5 , false ); // 箭头的大小可以自己随便定义
p.CustomEndCap = aac;
g.DrawLine(p, 40 , picChart.ClientRectangle.Height, 40 , 4 );
g.DrawLine(p, picChart.Width - 40 , picChart.ClientRectangle.Height, picChart.Width - 40 , 4 );
p.Dispose();
Font f = new Font( " Arial " , 9 );
// 画线上箭头文字
int stepY = (picChart.Height - 150 ) / 13 ;
int curH = 0 ;
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Far;
int du = 0 ;
for ( int i = 0 ; i < 13 ; i ++ )
{
bool jo = i % 2 == 0 ;
int w = jo ? 10 : 5 ;
g.DrawLine(Pens.White, 40 - w, picChart.ClientRectangle.Height - 130 - curH, 40 , picChart.ClientRectangle.Height - 130 - curH);
g.DrawLine(Pens.White, picChart.Width - 40 , picChart.ClientRectangle.Height - 130 - curH, picChart.Width - ( 40 - w), picChart.ClientRectangle.Height - 130 - curH);
if (jo)
{
// 如果是偶数
g.DrawString(du.ToString(), f, new SolidBrush(Color.White), 30 , picChart.ClientRectangle.Height - 137 - curH, sf);
g.DrawString(du.ToString(), f, new SolidBrush(Color.White), picChart.Width - 30 , picChart.ClientRectangle.Height - 137 - curH);
du += 40 ;
}
curH += stepY;
}
g.DrawString( " 道桥隧 " , f, new SolidBrush(Color.White), 0 , picChart.ClientRectangle.Height - 30 );
g.DrawString( " 曲 线 " , f, new SolidBrush(Color.White), 0 , picChart.ClientRectangle.Height - 70 );
g.DrawString( " 纵断面 " , f, new SolidBrush(Color.White), 0 , picChart.ClientRectangle.Height - 110 );
f.Dispose();
在winform程序中,只要了解了那几个类,使用GDI画图是相当方便的