WinForm 窗体圆角、平角（不规则窗体）实现的几种方法

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, 10);
this.Region = new Region(FormPath);
}

private GraphicsPath GetRoundedRectPath(Rectangle rect, int radius)
{
Rectangle arcRect = new Rectangle(rect.Location, new Size(diameter, diameter));
GraphicsPath path = new GraphicsPath();
//   左上角
//   右上角
arcRect.X = rect.Right - diameter;
//   右下角
arcRect.Y = rect.Bottom - diameter;
//   左下角
arcRect.X = rect.Left;
path.CloseFigure();
return path;
}

protected override void OnResize(System.EventArgs e)
{
this.Region = null;
SetWindowRegion();
}

private SetFormCircle()
{
int w = this.Width; //窗体宽
int h = this.Height; //窗体高

//对于矩形的窗体，要在一个角上画个弧度至少需要2个点，所以4个角需要至少8个点
Point p1 = new Point(radian, 0);
Point p2 = new Point(w - radian, 0);
Point p3 = new Point(w, radian);
Point p4 = new Point(w, h - radian);
Point p5 = new Point(w - radian, h);
Point p6 = new Point(radian, h);
Point p7 = new Point(0, h - radian);
Point p8 = new Point(0, radian);

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

Point[] p = new Point[] { p1, p2, p3, p4, p5, p6, p7, p8 };

//将窗体的显示区域设为GraphicsPath的实例
this.Region = new System.Drawing.Region(shape);
}
private void Form1_Load(object sender, EventArgs e)
{
SetFormCircle();
}

private void Type(Control sender, int p_1, double p_2)
{
GraphicsPath oPath = new GraphicsPath();
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);
}
//备注：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果)

posted @ 2012-12-07 00:04  zxin  阅读(2532)  评论(2编辑  收藏  举报