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

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Configuration;
 5 using System.Diagnostics;
 6 using System.Text;
 7 using System.Threading;
 8 using System.Windows.Forms;
 9 
10 namespace only.Controls
11 {
12     public partial class DragDrop : Component
13     {
14 
15         private bool _enable = false;
16 
17         [Browsable(true)]
18         [Description("打开拖拽功能"), Category("设置")]
19         public bool Enable
20         {
21             get
22             {
23                 return _enable;
24             }
25             set
26             {
27                 if (value != _enable)
28                 {
29                     _enable = value;
30                     // Start(value);
31                     new Thread(() =>
32                     {
33                         Thread.Sleep(100);
34                         Start(_enable);
35                     }).Start();
36 
37                 }
38             }
39         }
40 
41         [Browsable(true)]
42         [Description("拖拽移动目标"), Category("设置")]
43         public Control TargetControl { get; set; }
44         [Browsable(true)]
45         [Description("拖拽事件源"), Category("设置")]
46         public Control SourceControl { get; set; }
47 
48 
49         public void Start(bool enable = true)
50         {
51             if (SourceControl != null & TargetControl != null)
52             {
53                 if (enable)
54                 {
55                     SourceControl.MouseDown += SourceControlOnMouseDown;
56                     SourceControl.MouseMove += SourceControlOnMouseMove;
57                     SourceControl.MouseUp += SourceControlOnMouseUp;
58                 }
59                 else
60                 {
61                     SourceControl.MouseDown -= SourceControlOnMouseDown;
62                     SourceControl.MouseMove -= SourceControlOnMouseMove;
63                     SourceControl.MouseUp -= SourceControlOnMouseUp;
64                 }
65             }
66         }
67 
68         private bool _mouseDown = false;
69         private int _startX = 0;
70         private int _startY = 0;
71 
72         private void SourceControlOnMouseUp(object sender, MouseEventArgs e)
73         {
74             _mouseDown = false;
75         }
76 
77         private void SourceControlOnMouseMove(object sender, MouseEventArgs e)
78         {
79             if (_mouseDown & _enable)
80             {
81                 TargetControl.Left += (e.X - _startX);
82                 TargetControl.Top += (e.Y - _startY);
83             }
84         }
85 
86         private void SourceControlOnMouseDown(object sender, MouseEventArgs e)
87         {
88             if (_mouseDown == false)
89             {
90                 _mouseDown = true;
91                 _startX = e.X;
92                 _startY = e.Y;
93             }
94         }
95     }
96 }