Question

C#怎样把下列的代码，修改为本窗体的边框？？？？？

private void Form1_Paint_1(object sender, PaintEventArgs e)
{
DrawRoundRectangle(panel1.CreateGraphics(), new Rectangle(120, 10, 100, 80), ColorTranslator.FromHtml("#FF66FF"), 4F, 20);
}
public static void DrawRoundRectangle(Graphics g, Rectangle rectangle, Color borderColor, float borderWidth, int r)
{

g.SmoothingMode = SmoothingMode.HighQuality;
// 由于边框也需要一定宽度，需要对矩形进行修正
rectangle = new Rectangle(rectangle.X, rectangle.Y, rectangle.Width - 1, rectangle.Height - 1);
Pen p = new Pen(borderColor, borderWidth);
//// 调用 getRoundRectangle 得到圆角矩形的路径，然后再进行绘制
g.DrawPath(p, getRoundRectangle(rectangle, r));
}

private static GraphicsPath getRoundRectangle(Rectangle rectangle, int r)
{
int l = 2 * r;
// 把圆角矩形分成八段直线、弧的组合，依次加到路径中
GraphicsPath gp = new GraphicsPath();
gp.AddLine(new Point(rectangle.X + r, rectangle.Y), new Point(rectangle.Right - r, rectangle.Y));
gp.AddArc(new Rectangle(rectangle.Right - l, rectangle.Y, l, l), 270F, 90F);
gp.AddLine(new Point(rectangle.Right, rectangle.Y + r), new Point(rectangle.Right, rectangle.Bottom - r));
gp.AddArc(new Rectangle(rectangle.Right - l, rectangle.Bottom - l, l, l), 0F, 90F);
gp.AddLine(new Point(rectangle.Right - r, rectangle.Bottom), new Point(rectangle.X + r, rectangle.Bottom));
gp.AddArc(new Rectangle(rectangle.X, rectangle.Bottom - l, l, l), 90F, 90F);
gp.AddLine(new Point(rectangle.X, rectangle.Bottom - r), new Point(rectangle.X, rectangle.Y + r));
gp.AddArc(new Rectangle(rectangle.X, rectangle.Y, l, l), 180F, 90F);
return gp;
}

Answer 1

如图所示，在你的Form1的属性页，点击闪电按钮之后，滚动到最底部，双击Paint，就有这个事件了，再把你的代码覆盖一次，然后再来点击下拉框选折函数

追问

我是想把代码改为本窗体的边框代码。想在的代码效果是在panel控件中画了一个圆角长方形，我想把画出来的圆角长方形为Form1的边框

追答

你是要这种吗？