实例介绍
【实例简介】设定规定时间自动锁屏和解屏
【实例截图】
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Reflection;
using System.ComponentModel;
namespace GeneralFramework
{
public class MouseKeyHook
{
[StructLayout(LayoutKind.Sequential)]
private class POINT
{
public int x;
public int y;
}
[StructLayout(LayoutKind.Sequential)]
private class MouseHookStruct
{
public POINT pt;
public int hwnd;
public int wHitTestCode;
public int dwExtraInfo;
}
[StructLayout(LayoutKind.Sequential)]
private class MouseLLHookStruct
{
public POINT pt;
public int mouseData;
public int flags;
public int time;
public int dwExtraInfo;
}
[StructLayout(LayoutKind.Sequential)]
private class KeyboardHookStruct
{
public int vkCode;
public int scanCode;
public int flags;
public int time;
public int dwExtraInfo;
}
[DllImport("kernel32.dll")]
static extern int GetCurrentThreadId(); //取得当前线程编号的API
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall, SetLastError = true)]
private static extern int SetWindowsHookEx(
int idHook,
HookProc lpfn,
IntPtr hMod,
int dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall, SetLastError = true)]
private static extern int UnhookWindowsHookEx(int idHook);
[DllImport("user32.dll", CharSet = CharSet.Auto,
CallingConvention = CallingConvention.StdCall)]
private static extern int CallNextHookEx(
int idHook,
int nCode,
int wParam,
IntPtr lParam);
private delegate int HookProc(int nCode, int wParam, IntPtr lParam);
[DllImport("user32")]
private static extern int ToAscii(
int uVirtKey,
int uScanCode,
byte[] lpbKeyState,
byte[] lpwTransKey,
int fuState);
[DllImport("user32")]
private static extern int GetKeyboardState(byte[] pbKeyState);
[DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
private static extern short GetKeyState(int vKey);
private const int WH_MOUSE_LL = 14;
private const int WH_KEYBOARD_LL = 13;
private const int WH_MOUSE = 7;
private const int WH_KEYBOARD = 2;
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;
private const int WM_MBUTTONUP = 0x208;
private const int WM_LBUTTONDBLCLK = 0x203;
private const int WM_RBUTTONDBLCLK = 0x206;
private const int WM_MBUTTONDBLCLK = 0x209;
private const int WM_MOUSEWHEEL = 0x020A;
private const int WM_KEYDOWN = 0x100;
private const int WM_KEYUP = 0x101;
private const int WM_SYSKEYDOWN = 0x104;
private const int WM_SYSKEYUP = 0x105;
private const byte VK_SHIFT = 0x10;
private const byte VK_CAPITAL = 0x14;
private const byte VK_NUMLOCK = 0x90;
public MouseKeyHook()
{
Start();
}
public MouseKeyHook(bool InstallMouseHook, bool InstallKeyboardHook)
{
Start(InstallMouseHook, InstallKeyboardHook);
}
~MouseKeyHook()
{
Stop(true, true, false);
}
public event MouseEventHandler OnMouseActivity;
public event KeyEventHandler KeyDown;
public event KeyPressEventHandler KeyPress;
public event KeyEventHandler KeyUp;
private int hMouseHook = 0;
private int hKeyboardHook = 0;
private static HookProc MouseHookProcedure;
private static HookProc KeyboardHookProcedure;
public void Start()
{
this.Start(true, true);
}
public void Start(bool InstallMouseHook, bool InstallKeyboardHook)
{
if (hMouseHook == 0 && InstallMouseHook)
{
MouseHookProcedure = new HookProc(MouseHookProc);
hMouseHook = SetWindowsHookEx(
WH_MOUSE,
MouseHookProcedure,
IntPtr.Zero,
GetCurrentThreadId());
if (hMouseHook == 0)
{
int errorCode = Marshal.GetLastWin32Error();
Stop(true, false, false);
//throw new Win32Exception(errorCode);
}
}
if (hKeyboardHook == 0 && InstallKeyboardHook)
{
KeyboardHookProcedure = new HookProc(KeyboardHookProc);
hKeyboardHook = SetWindowsHookEx(
WH_KEYBOARD,
KeyboardHookProcedure,
IntPtr.Zero,
GetCurrentThreadId());
if (hKeyboardHook == 0)
{
int errorCode = Marshal.GetLastWin32Error();
Stop(false, true, false);
//throw new Win32Exception(errorCode);
}
}
}
public void Stop()
{
this.Stop(true, true, true);
}
public void Stop(bool UninstallMouseHook, bool UninstallKeyboardHook, bool ThrowExceptions)
{
if (hMouseHook != 0 && UninstallMouseHook)
{
int retMouse = UnhookWindowsHookEx(hMouseHook);
hMouseHook = 0;
if (retMouse == 0 && ThrowExceptions)
{
int errorCode = Marshal.GetLastWin32Error();
throw new Win32Exception(errorCode);
}
}
if (hKeyboardHook != 0 && UninstallKeyboardHook)
{
int retKeyboard = UnhookWindowsHookEx(hKeyboardHook);
hKeyboardHook = 0;
if (retKeyboard == 0 && ThrowExceptions)
{
int errorCode = Marshal.GetLastWin32Error();
throw new Win32Exception(errorCode);
}
}
}
private int MouseHookProc(int nCode, int wParam, IntPtr lParam)
{
if ((nCode >= 0) && (OnMouseActivity != null))
{
MouseLLHookStruct mouseHookStruct = (MouseLLHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseLLHookStruct));
MouseButtons button = MouseButtons.None;
short mouseDelta = 0;
switch (wParam)
{
case WM_LBUTTONDOWN:
button = MouseButtons.Left;
break;
case WM_RBUTTONDOWN:
button = MouseButtons.Right;
break;
case WM_MOUSEWHEEL:
mouseDelta = (short)((mouseHookStruct.mouseData >> 16) & 0xffff);
break;
}
int clickCount = 0;
if (button != MouseButtons.None)
if (wParam == WM_LBUTTONDBLCLK || wParam == WM_RBUTTONDBLCLK) clickCount = 2;
else clickCount = 1;
MouseEventArgs e = new MouseEventArgs(
button,
clickCount,
mouseHookStruct.pt.x,
mouseHookStruct.pt.y,
mouseDelta);
OnMouseActivity(this, e);
}
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}
private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
{
try
{
if (nCode < 0)
{
return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}
KeyDown(this, null);
return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
}
}
}
}
标签： 锁屏
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