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【CSharp】 WinForm 圆角

作者:盈巧 / 发布于2015/1/26/ 364


	using System;
	using System.Collections.Generic;
	using System.ComponentModel;
	using System.Data;
	using System.Drawing;
	using System.Linq;
	using System.Text;
	using System.Windows.Forms;
	using System.Runtime.InteropServices;
	using System.Drawing.Drawing2D;

	namespace AppStartSample
	{
	 public partial class Form3 : Form
	 {

	
	 public Form3()
	 {
	 InitializeComponent();
	 }

	

	 private void button1_Click(object sender, EventArgs e)
	 {
	 }

	 private void button2_Click(object sender, EventArgs e)
	 {
	 }

	 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);//

	 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 - 0;
	 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();
	 }

	
	 }
	}

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