独家原创,拖拽任意控件移动任意目标,拖拽控件移动整个窗体

独家原创,拖拽任意控件移动任意目标,拖拽控件移动整个窗体,在无边框窗体及其友好的实现拖拽移动窗体

http://www.cnblogs.com/vonly/

only原创首发,vonly.net

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Diagnostics;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace only.Controls
{
    public partial class DragDrop : Component
    {

        private bool _enable = false;

        [Browsable(true)]
        [Description("打开拖拽功能"), Category("设置")]
        public bool Enable
        {
            get
            {
                return _enable;
            }
            set
            {
                if (value != _enable)
                {
                    _enable = value;
                    // Start(value);
                    new Thread(() =>
                    {
                        Thread.Sleep(100);
                        Start(_enable);
                    }).Start();

                }
            }
        }

        [Browsable(true)]
        [Description("拖拽移动目标"), Category("设置")]
        public Control TargetControl { get; set; }
        [Browsable(true)]
        [Description("拖拽事件源"), Category("设置")]
        public Control SourceControl { get; set; }


        public void Start(bool enable = true)
        {
            if (SourceControl != null & TargetControl != null)
            {
                if (enable)
                {
                    SourceControl.MouseDown += SourceControlOnMouseDown;
                    SourceControl.MouseMove += SourceControlOnMouseMove;
                    SourceControl.MouseUp += SourceControlOnMouseUp;
                }
                else
                {
                    SourceControl.MouseDown -= SourceControlOnMouseDown;
                    SourceControl.MouseMove -= SourceControlOnMouseMove;
                    SourceControl.MouseUp -= SourceControlOnMouseUp;
                }
            }
        }

        private bool _mouseDown = false;
        private int _startX = 0;
        private int _startY = 0;

        private void SourceControlOnMouseUp(object sender, MouseEventArgs e)
        {
            _mouseDown = false;
        }

        private void SourceControlOnMouseMove(object sender, MouseEventArgs e)
        {
            if (_mouseDown & _enable)
            {
                TargetControl.Left += (e.X - _startX);
                TargetControl.Top += (e.Y - _startY);
            }
        }

        private void SourceControlOnMouseDown(object sender, MouseEventArgs e)
        {
            if (_mouseDown == false)
            {
                _mouseDown = true;
                _startX = e.X;
                _startY = e.Y;
            }
        }
    }
}