c#非矩形窗体

来源：互联网发布：怎么目测身高知乎编辑：程序博客网时间：2024/05/29 04:47
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace WindowsApplication1
{
    public partial class Form3 : Form
    {
        Point downPoint = Point.Empty;
        public Form3()
        {
            InitializeComponent();
        }
        void Set()
        {
            Rectangle rect = this.ClientRectangle;
            using (GraphicsPath path = new GraphicsPath())
            {
                path.AddEllipse(rect);
                this.Region = new Region(path);
            }
        }
        private void Form3_Load(object sender, EventArgs e)
        {
            Set();
        }
        private void Form3_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button != MouseButtons.Left) return;
            downPoint = new Point(e.X, e.Y);
        }
        private void Form3_MouseMove(object sender, MouseEventArgs e)
        {
            if (downPoint == Point.Empty) return;
            Point location = new Point(this.Left + e.X - downPoint.X, this.Top + e.Y - downPoint.Y);
            this.Location = location;
        }
        private void Form3_MouseUp(object sender, MouseEventArgs e)
        {
            if (e.Button != MouseButtons.Left) return;
            downPoint = Point.Empty;
        }
    }
}