C# 圆角控件设计

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public void SetWindowRegion()

{

System.Drawing.Drawing2D.GraphicsPath FormPath;

FormPath = new System.Drawing.Drawing2D.GraphicsPath();

Rectangle rect = new Rectangle(0, 22, this.Width, this.Height - 22);//this.Left-10,this.Top-10,this.Width-10,this.Height-10);

FormPath = GetRoundedRectPath(rect, 30);

this.Region = new Region(FormPath);

}

private GraphicsPath GetRoundedRectPath(Rectangle rect, int radius)

{

int diameter = radius;

Rectangle arcRect = new Rectangle(rect.Location, new Size(diameter, diameter));

GraphicsPath path = new GraphicsPath();

// 左上角

path.AddArc(arcRect, 180, 90);

// 右上角

arcRect.X = rect.Right - diameter;

path.AddArc(arcRect, 270, 90);

// 右下角

arcRect.Y = rect.Bottom - diameter;

path.AddArc(arcRect, 0, 90);

// 左下角

arcRect.X = rect.Left;

path.AddArc(arcRect, 90, 90);

path.CloseFigure();

return path;

}

protected override void OnResize(System.EventArgs e)

{

this.Region = null;

SetWindowRegion();

}

教你一招:构造圆角窗体
http://topic.csdn.net/t/20041128/19/3596094.html

增加命名空间:using System.Drawing.Drawing2D;
添加方法如下:当然各角的点可根据需要确定.

复制保存

private void Type(Control sender, int p_1, double p_2)
{
    GraphicsPath oPath = new GraphicsPath();
    oPath.AddClosedCurve(
        new Point[] {
            new Point(0, sender.Height / p_1),
            new Point(sender.Width / p_1, 0),
            new Point(sender.Width - sender.Width / p_1, 0),
            new Point(sender.Width, sender.Height / p_1),
            new Point(sender.Width, sender.Height - sender.Height / p_1),
            new Point(sender.Width - sender.Width / p_1, sender.Height),
            new Point(sender.Width / p_1, sender.Height),
            new Point(0, sender.Height - sender.Height / p_1) },

        (float) p_2);

    sender.Region = new Region(oPath);
}

在窗体的paint和resize事件中增加:Type(this,20,0.1);
参数20和0.1也可以根据自己的需要调整到最佳效