急问:怎样在画图画出带箭头的直线?

Question

如题,在线等!

Answer 1

image2.Canvas.Pen.Color:=clred;
   image2.Canvas.Pen.Width:=3;
   image2.Canvas.MoveTo(10,10);
   image2.Canvas.LineTo(100,10);
   image2.Canvas.LineTo(20,90);
   image2.Canvas.MoveTo(100,10);
   image2.Canvas.LineTo(0,90);
这样是不是就出来的一个箭头直线啦, 原理就是如此.

Answer 2

image1.Canvas.Pen.Width:=3;
   image1.Canvas.MoveTo(0,0);
   image1.Canvas.LineTo(100,100);
   image1.Canvas.LineTo(94,90);
   image1.Canvas.MoveTo(100,100);
   image1.Canvas.LineTo(90,94);
你可以试试这个的效果。

Answer 3

谢谢呢还有就是在用串口通信的时候
在接受或者发送数据的时候,怎样将16进制数转换成ASCII代码呢