js获取桌面鼠标键盘事件怎么实现
学习啦在线学习网js获取桌面鼠标键盘事件怎么实现
学习前端的同学你们知道怎么你们知道获取桌面鼠标键盘事件怎么实现吗?不知道的话跟着学习啦小编一起来学习了解获取桌面鼠标键盘事件吧。
获取桌面鼠标键盘事件的代码
using System;
学习啦在线学习网 using System.Collections.Generic;
学习啦在线学习网 using System.Linq;
学习啦在线学习网 using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Reflection;
学习啦在线学习网 namespace UDPService
{
/// <summary>
///
学习啦在线学习网 /// </summary>
学习啦在线学习网 [StructLayout(LayoutKind.Sequential)]
public class POINT
{
public int x;
学习啦在线学习网 public int y;
}
学习啦在线学习网 /// <summary>
///
/// </summary>
[StructLayout(LayoutKind.Sequential)]
public class MouseHookStruct
{
学习啦在线学习网 public POINT pt;
学习啦在线学习网 public int hwnd;
学习啦在线学习网 public int wHitTestCode;
public int dwExtraInfo;
}
/// <summary>
///
/// </summary>
学习啦在线学习网 [StructLayout(LayoutKind.Sequential)]
学习啦在线学习网 public class KeyboardHookStruct
{
学习啦在线学习网 public int vkCode;
学习啦在线学习网 public int scanCode;
学习啦在线学习网 public int flags;
public int time;
学习啦在线学习网 public int dwExtraInfo;
}
学习啦在线学习网 /// <summary>
///
学习啦在线学习网 /// </summary>
public class GlobalHook
{
public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);
public GlobalHook()
{
学习啦在线学习网 Start();
}
学习啦在线学习网 ~GlobalHook()
{
Stop();
}
public event MouseEventHandler OnMouseActivity;
public event KeyEventHandler KeyDown;
public event KeyPressEventHandler KeyPress;
学习啦在线学习网 public event KeyEventHandler KeyUp;
public delegate int GlobalHookProc(int nCode, Int32 wParam, IntPtr lParam);
static int hMouseHook = 0;
学习啦在线学习网 static int hKeyboardHook = 0;
学习啦在线学习网 public const int WH_MOUSE_LL = 14;
public const int WH_KEYBOARD_LL = 13;
GlobalHookProc MouseHookProcedure;
学习啦在线学习网 GlobalHookProc KeyboardHookProcedure;
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
学习啦在线学习网 public static extern int SetWindowsHookEx(int idHook, GlobalHookProc lpfn,
学习啦在线学习网 IntPtr hInstance, int threadId);
学习啦在线学习网 [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
学习啦在线学习网 public static extern bool UnhookWindowsHookEx(int idHook);
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
学习啦在线学习网 public static extern int CallNextHookEx(int idHook, int nCode,
学习啦在线学习网 Int32 wParam, IntPtr lParam);
public void Start()
{
if (hMouseHook == 0)
{
学习啦在线学习网 MouseHookProcedure = new GlobalHookProc(MouseHookProc);
try
{
hMouseHook = SetWindowsHookEx(WH_MOUSE_LL,
学习啦在线学习网 MouseHookProcedure,
学习啦在线学习网 Marshal.GetHINSTANCE(
学习啦在线学习网 Assembly.GetExecutingAssembly().GetModules()[0]),
0);
}
catch (Exception err)
{ }
学习啦在线学习网 if (hMouseHook == 0)
{
Stop();
学习啦在线学习网 throw new Exception("SetWindowsHookEx failed.");
}
}
if (hKeyboardHook == 0)
{
KeyboardHookProcedure = new GlobalHookProc(KeyboardHookProc);
try
{
学习啦在线学习网 hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL,
KeyboardHookProcedure,
学习啦在线学习网 Marshal.GetHINSTANCE(
Assembly.GetExecutingAssembly().GetModules()[0]),
0);
}
学习啦在线学习网 catch (Exception err2)
{ }
学习啦在线学习网 if (hKeyboardHook == 0)
{
Stop();
throw new Exception("SetWindowsHookEx ist failed.");
}
}
}
public void Stop()
{
学习啦在线学习网 bool retMouse = true;
学习啦在线学习网 bool retKeyboard = true;
学习啦在线学习网 if (hMouseHook != 0)
{
retMouse = UnhookWindowsHookEx(hMouseHook);
hMouseHook = 0;
}
学习啦在线学习网 if (hKeyboardHook != 0)
{
retKeyboard = UnhookWindowsHookEx(hKeyboardHook);
学习啦在线学习网 hKeyboardHook = 0;
}
学习啦在线学习网 if (!(retMouse && retKeyboard))
throw new Exception("UnhookWindowsHookEx failed.");
}
private const int WM_MOUSEMOVE = 0x200;
private const int WM_LBUTTONDOWN = 0x201;
private const int WM_RBUTTONDOWN = 0x204;
private const int WM_MBUTTONDOWN = 0x207;
private const int WM_LBUTTONUP = 0x202;
private const int WM_RBUTTONUP = 0x205;
学习啦在线学习网 private const int WM_MBUTTONUP = 0x208;
学习啦在线学习网 private const int WM_LBUTTONDBLCLK = 0x203;
private const int WM_RBUTTONDBLCLK = 0x206;
学习啦在线学习网 private const int WM_MBUTTONDBLCLK = 0x209;
private int MouseHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if ((nCode >= 0) && (OnMouseActivity != null))
{
学习啦在线学习网 MouseButtons button = MouseButtons.None;
switch (wParam)
{
case WM_LBUTTONDOWN:
学习啦在线学习网 //case WM_LBUTTONUP:
//case WM_LBUTTONDBLCLK:
学习啦在线学习网 button = MouseButtons.Left;
break;
case WM_RBUTTONDOWN:
//case WM_RBUTTONUP:
//case WM_RBUTTONDBLCLK:
button = MouseButtons.Right;
break;
}
int clickCount = 0;
if (button != MouseButtons.None)
学习啦在线学习网 if (wParam == WM_LBUTTONDBLCLK || wParam == WM_RBUTTONDBLCLK)
学习啦在线学习网 clickCount = 2;
else
clickCount = 1;
MouseHookStruct MyMouseHookStruct =
学习啦在线学习网 (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));
MouseEventArgs e = new MouseEventArgs(
button,
clickCount,
MyMouseHookStruct.pt.x,
MyMouseHookStruct.pt.y,
0);
学习啦在线学习网 OnMouseActivity(this, e);
}
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}
[DllImport("user32")]
学习啦在线学习网 public static extern int ToAscii(int uVirtKey,
int uScanCode,
byte[] lpbKeyState,
byte[] lpwTransKey,
学习啦在线学习网 int fuState);
学习啦在线学习网 [DllImport("user32")]
学习啦在线学习网 public static extern int GetKeyboardState(byte[] pbKeyState);
private const int WM_KEYDOWN = 0x100;
private const int WM_KEYUP = 0x101;
学习啦在线学习网 private const int WM_SYSKEYDOWN = 0x104;
学习啦在线学习网 private const int WM_SYSKEYUP = 0x105;
private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
if ((nCode >= 0) && (KeyDown != null || KeyUp != null || KeyPress != null))
{
KeyboardHookStruct MyKeyboardHookStruct =
(KeyboardHookStruct)Marshal.PtrToStructure(lParam,
学习啦在线学习网 typeof(KeyboardHookStruct));
if (KeyDown != null && (wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN))
{
学习啦在线学习网 Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;
KeyEventArgs e = new KeyEventArgs(keyData);
学习啦在线学习网 KeyDown(this, e);
}
if (KeyPress != null && wParam == WM_KEYDOWN)
{
byte[] keyState = new byte[256];
GetKeyboardState(keyState);
byte[] inBuffer = new byte[2];
if (ToAscii(MyKeyboardHookStruct.vkCode,
MyKeyboardHookStruct.scanCode,
keyState,
学习啦在线学习网 inBuffer,
学习啦在线学习网 MyKeyboardHookStruct.flags) == 1)
{
KeyPressEventArgs e = new KeyPressEventArgs((char)inBuffer[0]);
KeyPress(this, e);
}
}
if (KeyUp != null && (wParam == WM_KEYUP || wParam == WM_SYSKEYUP))
{
学习啦在线学习网 Keys keyData = (Keys)MyKeyboardHookStruct.vkCode;
KeyEventArgs e = new KeyEventArgs(keyData);
KeyUp(this, e);
}
}
学习啦在线学习网 return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}
}
}
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