Question

C#中将面板颜色赋给画笔色拜托了各位 谢谢

public void CreateNewPen()//制作随机色，并将颜色赋值给panel1 { int r, g, b; Random ran = new Random(); r = ran.Next(0, 255); g = ran.Next(0, 255); b = ran.Next(0, 225); Color clr = Color.FromArgb(r, g, b); panel1.BackColor = clr; //这里应该可以加一句将panel1.BackColor或clr 给画笔颜色····问题在于不知道怎么做 } Graphics g = richTextBox1.CreateGraphics(); g.DrawEllipse (Pens .Blue,richTextBox1 .ClientRectangle ); //我想把这句里面的pens.Blue改成panel1.BackColor颜色 g.Dispose(); 怎么做？

Answer 1

public void CreateNewPen()//制作随机色，并将颜色赋值给panel1 { int r, g, b; Random ran = new Random(); r = ran.Next(0, 255); g = ran.Next(0, 255); b = ran.Next(0, 225); Color clr = Color.FromArgb(r, g, b); panel1.BackColor = clr; //这里应该可以加一句将panel1.BackColor或clr 给画笔颜色····问题在于不知道怎么做 Pen myPen=new Pen(); myPen.Color=clr; } Graphics g = richTextBox1.CreateGraphics(); // g.DrawEllipse (Pens .Blue,richTextBox1 .ClientRectangle ); //我想把这句里面的pens.Blue改成panel1.BackColor颜色 Pen pen=new Pen(); pen.Color=panel.BackColor; g.DrawEllipse (pen,richTextBox1 .ClientRectangle ); g.Dispose(); //by:梦酹天涯.

Answer 2

根据颜色创建画笔。Pen p = new Pen(clr);这里clr就是panel1.BackColor