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);

}