借鉴网上的winform模仿QQ窗口停靠功能稍作改动

  2015-07-11 15:24:04  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Data;
  5 using System.Drawing;
  6 using System.Text;
  7 using System.Windows.Forms;
  8
  9 namespace 窗口停靠
 10 {
 11     public partial class Form1 : Form
 12     {
 13         string location = null;
 14         int y;
 15         int x;
 16         public Form1()
 17         {
 18             InitializeComponent();
 19         }
 20
 21
 22
 23
 24         /// <summary>
 25
 26         /// 当窗体的位置改变时发生
 27
 28         /// </summary>
 29
 30         /// <param name="sender"></param>
 31
 32         /// <param name="e"></param>
 33
 34         private void Form1_LocationChanged(object sender, EventArgs e)
 35         {
 36             y = this.Location.Y;
 37             x = this.Location.X;
 38             if (this.Top <= 0)
 39             {
 40
 41                 location = "top";
 42
 43             }
 44
 45             else if (this.Left <= 0)
 46             {
 47
 48                 location = "left";
 49
 50             }
 51
 52
 53             else if (this.Right >= Screen.PrimaryScreen.Bounds.Width)
 54             {
 55
 56                 location = "right";
 57
 58             }
 59             else
 60             {
 61                 location = "center";
 62             }
 63
 64         }
 65         private void timer2_Tick(object sender, EventArgs e)
 66         {
 67
 68             //如果鼠标在窗体上，则根据停靠位置显示整个窗体
 69
 70             if (this.Bounds.Contains(Cursor.Position))
 71             {
 72
 73                 switch (location)
 74                 {
 75
 76                     case "top":
 77                         if(this.Location.Y<0)
 78                         {
 79                             y += 25;
 80                             if(y>0)
 81                             {
 82                                 y = 0;
 83                             }
 84                             this.Location = new Point(this.Location.X, y);
 85                         }
 86                         break;
 87
 88                     case "left":
 89
 90                          if(this.Location.X<0)
 91                         {
 92                             x += 25;
 93                             if(x>0)
 94                             {
 95                                 x = 0;
 96                             }
 97                             this.Location = new Point(x, this.Location.Y);
 98                         }
 99                         break;
100
101                     case "right":
102                         if (this.Location.X > Screen.PrimaryScreen.Bounds.Width - this.Width)
103                         {
104                             x -= 25;
105                             if (x < Screen.PrimaryScreen.Bounds.Width - this.Width)
106                             {
107                                 x = Screen.PrimaryScreen.Bounds.Width - this.Width;
108                             }
109                             this.Location = new Point(x, this.Location.Y);
110                         }
111                         break;
112
113
114                 }
115
116             }
117
118             else  //如果鼠标离开窗体，则根据停靠位置隐藏窗体，但须留出部分窗体边缘以便鼠标选中窗体
119             {
120
121                 switch (location)
122                 {
123
124                     case "top":
125
126                         y = y - 25;
127                         if(y>-this.Height+8)
128                         {
129                         this.Location = new Point(this.Location.X, y);
130
131                         }
132                         else
133                         {
134                             this.Location = new Point(this.Location.X, -this.Height + 8);
135                         }
136                         break;
137
138
139                     case "left":
140                         x -= 25;
141                         if(x>-this.Width+8)
142                         {
143                         this.Location = new Point(x, this.Location.Y);
144
145                         }
146                         else
147                         {
148                             this.Location = new Point(-this.Width + 8, this.Location.Y);
149                         }
150                         break;
151
152                     case "right":
153
154
155                         if(x<Screen.PrimaryScreen.Bounds.Width-8 )
156                         {
157                             x += 25;
158                         this.Location = new Point(x, this.Location.Y);
159
160                         }
161                         else
162                         {
163                             this.Location = new Point(Screen.PrimaryScreen.Bounds.Width + - 8, this.Location.Y);
164                         }
165                         break;
166                 }
167
168             }
169
170         }
171     }
172
173 }
174