界面锁鼠标［原创］

在项目中，需将鼠标锁定在主界面中，且鼠标不能跑到客显上去，于是有了下面的代码：

  1using System;
  2using System.Collections.Generic;
  3using System.Text;
  4
  5namespace convert
  6{
  7    class Class4
  8    {
  9        一个鼠标类#region 一个鼠标类
 10
 11
 12        internal const byte SM_MOUSEPRESENT = 19;
 13        internal const byte SM_CMOUSEBUTTONS = 43;
 14        internal const byte SM_MOUSEWHEELPRESENT = 75;
 15
 16        internal struct POINTAPI
 17        {
 18            internal int x;
 19            internal int y;
 20        }
 21
 22        internal struct RECT
 23        {
 24            internal int left;
 25            internal int top;
 26            internal int right;
 27            internal int bottom;
 28        }
 29
 30        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "SwapMouseButton")]
 31        internal extern static int SwapMouseButton(int bSwap);
 32
 33        [System.Runtime.InteropServices.DllImport("user32", EntryPoint = "ClipCursor")]
 34        internal extern static int ClipCursor(ref   RECT lpRect);
 35
 36        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "GetCursorPos")]
 37        internal extern static int GetCursorPos(ref   POINTAPI lpPoint);
 38
 39        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "ShowCursor")]
 40        internal extern static bool ShowCursor(bool bShow);
 41
 42        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "EnableWindow")]
 43        internal extern static int EnableWindow(int hwnd, int fEnable);
 44
 45        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "GetWindowRect")]
 46        internal extern static int GetWindowRect(int hwnd, ref   RECT lpRect);
 47
 48        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "SetCursorPos")]
 49        internal extern static int SetCursorPos(int x, int y);
 50
 51        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "GetSystemMetrics")]
 52        internal extern static int GetSystemMetrics(int nIndex);
 53
 54        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "SetDoubleClickTime")]
 55        internal extern static int SetDoubleClickTime(int wCount);
 56
 57        [System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "GetDoubleClickTime")]
 58        internal extern static int GetDoubleClickTime();
 59
 60        [System.Runtime.InteropServices.DllImport("kernel32.DLL", EntryPoint = "Sleep")]
 61        internal extern static void Sleep(int dwMilliseconds);
 62
 63        //得到鼠标相对与全屏的坐标，不是相对与你的Form的，且与你的分辨率有关系  
 64
 65        public static int FullScreenPosition_X
 66        {
 67            get
 68            {
 69                POINTAPI _POINTAPI = new POINTAPI();
 70
 71                GetCursorPos(ref   _POINTAPI);
 72
 73                return _POINTAPI.x;
 74            }
 75        }
 76
 77        public static int FullScreenPosition_Y
 78        {
 79            get
 80            {
 81                POINTAPI _POINTAPI = new POINTAPI();
 82
 83                GetCursorPos(ref   _POINTAPI);
 84
 85                return _POINTAPI.y;
 86            }
 87        }
 88
 89        //隐藏 显示 鼠标  
 90        public static void Hide()
 91        {
 92            ShowCursor(false);
 93        }
 94
 95        public static void Show()
 96        {
 97            ShowCursor(true);
 98        }
 99
100        //将鼠标锁定在你的Form里   不过你得将你的Form先锁了,Form   Resize   就失效了 
101        public static void Lock(System.Windows.Forms.Form ObjectForm)
102        {
103            RECT _FormRect = new RECT();
104
105            GetWindowRect(ObjectForm.Handle.ToInt32(), ref   _FormRect);
106
107            ClipCursor(ref   _FormRect);
108        }
109
110        public static void UnLock()
111        {
112            RECT _ScreenRect = new RECT();
113
114            _ScreenRect.top = 0;
115            _ScreenRect.left = 0;
116            _ScreenRect.bottom = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Bottom;
117            _ScreenRect.right = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Right;
118
119            ClipCursor(ref   _ScreenRect);
120        }
121
122        //鼠标失效,不过失效的好像不只是鼠标,小心哦 
123        public static void Disable(System.Windows.Forms.Form ObjectForm)
124        {
125            EnableWindow(ObjectForm.Handle.ToInt32(), 0);
126        }
127
128        public static void Enable(System.Windows.Forms.Form ObjectForm)
129        {
130            EnableWindow(ObjectForm.Handle.ToInt32(), 1);
131        }
132        //   得到你的鼠标类型  
133        public static string Type
134        {
135            get
136            {
137                if (GetSystemMetrics(SM_MOUSEPRESENT) == 0)
138                {
139                    return "本计算机尚未安装鼠标";
140                }
141                else
142                {
143                    if (GetSystemMetrics(SM_MOUSEWHEELPRESENT) != 0)
144                    {
145                        return GetSystemMetrics(SM_CMOUSEBUTTONS) + "键滚轮鼠标";
146                    }
147                    else
148                    {
149                        return GetSystemMetrics(SM_CMOUSEBUTTONS) + "键鼠标";
150                    }
151                }
152            }
153        }
154
155        //   设置鼠标双击时间
156        public static void DoubleClickTime_Set(int MouseDoubleClickTime)
157        {
158            SetDoubleClickTime(MouseDoubleClickTime);
159        }
160
161        public static string DoubleClickTime_Get()
162        {
163            return GetDoubleClickTime().ToString();
164        }
165
166        //设置鼠标默认主键   一般都习惯用右手用鼠标 
167        public static void DefaultRightButton()
168        {
169            SwapMouseButton(1);
170        }
171
172        public static void DefaultLeftButton()
173        {
174            SwapMouseButton(0);
175        }
176    }
177        #endregion
178
179}
180

使用如下：

 1using System;
 2using System.Collections.Generic;
 3using System.Text;
 4using System.Windows.Forms;
 5
 6namespace convert
 7{
 8    public class loadform:ApplicationContext 
 9    {
10        public loadform()
11            :base()
12        {
13            Form5 ff = new Form5();      
14            
15            ff.Show();
16            Class4.Lock(ff);
17            Class4.Enable(ff);
18           
19        }
20    }
21}
22

注意，窗体须不能改变大小，可将窗体的FormBorderStyle 设置为None。