1、如果制作圆角窗体，窗体先继承DOTNETBAR的：public partial class Form2 : DevComponents.DotNetBar.Office2007Form
然后窗体里加上一个DONTERBAR的panel，然后设置panel为fill占满整个窗体
然后设置panel的CornerType为Rounded，然后窗体就变为圆角的了： panelEx1.Style.CornerType = DevComponents.DotNetBar.eCornerType.Rounded;
2、如果是圆角控件就照葫芦画瓢，把panel放在控件上面，然后设置为fill，再设置panel的CornerType为Rounded就变为圆角控件了
DOTNETBAR的button控件默认就可以设置为圆角按钮的
今天弄个了一天最后弄出了圆角窗体，可是不是用DOTNETBAR，原来DOTNETBAR实现不了，以下是本人实现圆角窗体的代码
复制代码 代码如下:
/// <summary>
/// 重绘窗体为圆角
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DispenserForm_Paint(object sender, PaintEventArgs e)
{
Form form = ((Form)sender);
List<Point> list = new List<Point>();
int width = form.Width;
int height = form.Height;
//左上
list.Add(new Point(0, 5));
list.Add(new Point(1, 5));
list.Add(new Point(1, 3));
list.Add(new Point(2, 3));
list.Add(new Point(2, 2));
list.Add(new Point(3, 2));
list.Add(new Point(3, 1));
list.Add(new Point(5, 1));
list.Add(new Point(5, 0));
//右上
list.Add(new Point(width - 5, 0));
list.Add(new Point(width - 5, 1));
list.Add(new Point(width - 3, 1));
list.Add(new Point(width - 3, 2));
list.Add(new Point(width - 2, 2));
list.Add(new Point(width - 2, 3));
list.Add(new Point(width - 1, 3));
list.Add(new Point(width - 1, 5));
list.Add(new Point(width - 0, 5));
//右下
list.Add(new Point(width - 0, height - 5));
list.Add(new Point(width - 1, height - 5));
list.Add(new Point(width - 1, height - 3));
list.Add(new Point(width - 2, height - 3));
list.Add(new Point(width - 2, height - 2));
list.Add(new Point(width - 3, height - 2));
list.Add(new Point(width - 3, height - 1));
list.Add(new Point(width - 5, height - 1));
list.Add(new Point(width - 5, height - 0));
//左下
list.Add(new Point(5, height - 0));
list.Add(new Point(5, height - 1));
list.Add(new Point(3, height - 1));
list.Add(new Point(3, height - 2));
list.Add(new Point(2, height - 2));
list.Add(new Point(2, height - 3));
list.Add(new Point(1, height - 3));
list.Add(new Point(1, height - 5));
list.Add(new Point(0, height - 5));
Point[] points = list.ToArray();
GraphicsPath shape = new GraphicsPath();
shape.AddPolygon(points);
//将窗体的显示区域设为GraphicsPath的实例
form.Region = new System.Drawing.Region(shape);
}
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