Question

c#绘图程序 怎么改变pen里面的粗细 使得画出的矩形线条椭圆的粗细改变 int变量不行啊

如上

Answer 1

根据pen的对象修改粗细线条

 Graphics g = Graphics.FromHwnd(this.Handle);

           

            float wid = (float)4.1;

            Pen p = new Pen(Color.Red,wid );

            g.DrawRectangle(p, 0, 0, 100, 50);

            float wid2 = (float)1.3;

            Pen p2 = new Pen(Color.Green, wid2);

            g.DrawRectangle(p2, 0, 100, 100, 50);

Answer 2

要用float型变量