我正在尝试制作一个阻止某些Windows热键和类似功能的程序，以帮助用户避免在浏览器中运行的Flash程序中执行他们可能不想做的操作。
我希望制作的程序是一个.NET C＃WinForms程序，它充当键盘钩子。
目前，它可以阻止Ctrl + W，Alt + F4等组合键。但那些只是“次要功能”。他们正在使用RegisterHotkey方法工作。
我真正希望实现的是，如果可能的话，能够以任何方式禁用 Ctrl +鼠标左键单击，按住 Alt +鼠标左键单击，然后 Shift +鼠标左键单击。
实现它的方法也应该优先“取消”它们并在程序关闭时再次启用它们。
以下是当前代码的相关摘要：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace HotKeyBlocker
{
public partial class HotkeyBlocker : Form
{
//Credits to: http://www.codeproject.com/KB/cs/Kiosk_CS.aspx?display=Print
//And: http://support.microsoft.com/kb/318804
#region Dynamic Link Library Imports for Hotkeys
[DllImport("user32.dll")]
private static extern int FindWindow(string cls, string wndwText);
[DllImport("user32.dll")]
private static extern int ShowWindow(int hwnd, int cmd);
[DllImport("user32.dll")]
private static extern long SHAppBarMessage(long dword, int cmd);
[DllImport("user32.dll")]
private static extern int RegisterHotKey(IntPtr hwnd, int id, int
fsModifiers, int vk);
[DllImport("user32.dll")]
private static extern int UnregisterHotKey(IntPtr hwnd, int id);
#endregion
#region Modifier Constants and Variables
// Constants for modifier keys
private const int USE_NONE = 0;
private const int USE_ALT = 1;
private const int USE_CTRL = 2;
private const int USE_SHIFT = 4;
private const int USE_WIN = 8;
// Hot key ID tracker
short mHotKeyId = 0;
#endregion
public HotkeyBlocker()
{
InitializeComponent();
// Related browser window key combinations
// -- Some things that you may want to disable --
//CTRL+A Select all
//CTRL+B Organize favorites
//CTRL+C Copy
//CTRL+F Find
//CTRL+H View history
//CTRL+L Open locate
//CTRL+N Open new browser window
//CTRL+O Open locate
//CTRL+P Print
//CTRL+R Refresh
//CTRL+S Save
//CTRL+V Paste
//CTRL+W Close
//CTRL+X Cut
//ALT+F4 Close
// Disable ALT+F4 - exit
RegisterGlobalHotKey(Keys.F4, USE_ALT);
// Disable CTRL+F4 - close tab
RegisterGlobalHotKey(Keys.F4, USE_CTRL);
// Disable CTRL+W - exit
RegisterGlobalHotKey(Keys.W, USE_CTRL);
// Disable CTRL+N - new window
RegisterGlobalHotKey(Keys.N, USE_CTRL);
// Disable CTRL+S - save
RegisterGlobalHotKey(Keys.S, USE_CTRL);
// Disable CTRL+A - select all
RegisterGlobalHotKey(Keys.A, USE_CTRL);
// Disable CTRL+C - copy
RegisterGlobalHotKey(Keys.C, USE_CTRL);
// Disable CTRL+X - cut
RegisterGlobalHotKey(Keys.X, USE_CTRL);
// Disable CTRL+V - paste
RegisterGlobalHotKey(Keys.V, USE_CTRL);
// Disable CTRL+B - organize favorites
RegisterGlobalHotKey(Keys.B, USE_CTRL);
// Disable CTRL+F - find
RegisterGlobalHotKey(Keys.F, USE_CTRL);
// Disable CTRL+H - view history
RegisterGlobalHotKey(Keys.H, USE_CTRL);
// Disable CTRL+P - print
RegisterGlobalHotKey(Keys.P, USE_CTRL);
// Disable CTRL+Tab - tab through browser tabs
RegisterGlobalHotKey(Keys.Tab, USE_CTRL);
// Disable CTRL+T - new browser tab
RegisterGlobalHotKey(Keys.T, USE_CTRL);
// Disable CTRL+O - open
RegisterGlobalHotKey(Keys.O, USE_CTRL);
// Disable CTRL+D - Bookmarks
RegisterGlobalHotKey(Keys.D, USE_CTRL);
// Disable ALT+Esc - tab through open applications
RegisterGlobalHotKey(Keys.Escape, USE_ALT);
// Disable F1 Key - help in most applications
RegisterGlobalHotKey(Keys.F1, USE_NONE);
// Disable ALT+Tab - tab through open applications
//RegisterGlobalHotKey(Keys.Tab, USE_ALT); <-- Does not work on W8
// hide the task bar - not a big deal, they can
// still CTRL+ESC to get the start menu; for that
// matter, CTRL+ALT+DEL also works; if you need to
// disable that you will have to violate SAS and
// monkey with the security policies on the machine
//ShowWindow(FindWindow("Shell_TrayWnd", null), 0);
}
private void RegisterGlobalHotKey(Keys hotkey, int modifiers)
{
try
{
// increment the hot key value - we are just identifying
// them with a sequential number since we have multiples
mHotKeyId++;
if (mHotKeyId > 0)
{
// register the hot key combination
if (RegisterHotKey(this.Handle, mHotKeyId, modifiers,
Convert.ToInt16(hotkey)) == 0)
{
// tell the user which combination failed to register
// this is useful to you, not an end user; the user
// should never see this application run
MessageBox.Show("Error: " +
mHotKeyId.ToString() + " - " +
Marshal.GetLastWin32Error().ToString(),
"Hot Key Registration");
}
}
}
catch
{
// clean up if hotkey registration failed -
// nothing works if it fails
UnregisterGlobalHotKey();
}
}
private void UnregisterGlobalHotKey()
{
// loop through each hotkey id and
// disable it
for (int i = 0; i < mHotKeyId; i++)
{
UnregisterHotKey(this.Handle, i);
}
}
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
// if the message matches,
// disregard it
const int WM_HOTKEY = 0x312;
if (m.Msg == WM_HOTKEY)
{
// Ignore the request or each
// disabled hotkey combination
}
}
private void HotkeyBlocker_FormClosed(object sender, FormClosedEventArgs e)
{
// unregister the hot keys
UnregisterGlobalHotKey();
// show the taskbar - does not matter really
//ShowWindow(FindWindow("Shell_TrayWnd", null), 1);
}
}
}
我知道它可能与名为SetWindowsHookEx的方法有关，但如果可以的话，我不知道如何使用它来实现它。
最好的方法是，实现它的最佳方法不会与我现有的代码冲突，并且可以与它一起工作。
我也在尝试确保此程序可以与Windows XP及更高版本的Windows兼容，如果可能的话，32位和64位。我在Windows 8 Professional 64位计算机上使用Visual Studio 2010 Professional。
我希望这足够具体吗？这是我第一次在这里发帖...（虽然我过去多次搜索过这个网站）
（我尝试使用“RegisterGlobalHotKey（Keys.LButton，USE_CTRL）”，“RegisterGlobalHotKey（Keys.LButton，USE_ALT）”和“RegisterGlobalHotKey（Keys.LButton，USE_SHIFT）”，但它们根本不起作用。）
答案 0 :(得分：1)
我相信很久以前我终于找到了问题的解决方案，也因为似乎没有人知道如何解决它。
我个人尚未对此进行测试，但如果我将鼠标点击检测功能与http://www.codeproject.com/Articles/32556/Auto-Clicker-C以及下面的代码结合起来......
[StructLayout(LayoutKind.Sequential)]
public struct INPUT
{
public SendInputEventType type;
public KeybdInputUnion mkhi;
}
[StructLayout(LayoutKind.Explicit)]
public struct KeybdInputUnion
{
[FieldOffset(0)]
public KEYBDINPUT ki;
}
[StructLayout(LayoutKind.Sequential)]
public struct KEYBDINPUT
{
public ushort wVk;
public ushort wScan;
public uint dwFlags;
public uint time;
public IntPtr dwExtraInfo;
}
public enum SendInputEventType : int
{
InputKeyboard
}
public enum KeyCode : ushort
{
/// <summary>
/// Right shift
/// </summary>
RSHIFT = 0xa1,
/// <summary>
/// Shift key
/// </summary>
SHIFT = 0x10,
/// <summary>
/// Right control
/// </summary>
RCONTROL = 0xa3,
/// <summary>
/// Left control
/// </summary>
LCONTROL = 0xa2,
/// <summary>
/// Left shift
/// </summary>
LSHIFT = 160,
/// <summary>
/// Ctlr key
/// </summary>
CONTROL = 0x11,
/// <summary>
/// Alt key
/// </summary>
ALT = 18,
}
[DllImport("User32.dll", SetLastError = true)]
static extern uint SendInput(uint nInputs, ref INPUT pInputs, int cbSize);
void YourMethodHereLikeTimerTickOrWE()
{
if (Control.ModifierKeys == Keys.Shift)
{
SendKeyUp(KeyCode.SHIFT);
}
if (Control.ModifierKeys == Keys.Alt)
{
SendKeyUp(KeyCode.ALT);
}
if (Control.ModifierKeys == Keys.Control)
{
SendKeyUp(KeyCode.CONTROL);
}
if (Control.ModifierKeys == (Keys.Control | Keys.Shift))
{
SendKeyUp(KeyCode.CONTROL);
SendKeyUp(KeyCode.SHIFT);
}
if (Control.ModifierKeys == (Keys.Control | Keys.Alt))
{
SendKeyUp(KeyCode.CONTROL);
SendKeyUp(KeyCode.ALT);
}
if (Control.ModifierKeys == (Keys.Alt | Keys.Shift))
{
SendKeyUp(KeyCode.ALT);
SendKeyUp(KeyCode.SHIFT);
}
if (Control.ModifierKeys == (Keys.Alt | Keys.Shift | Keys.Control))
{
SendKeyUp(KeyCode.ALT);
SendKeyUp(KeyCode.SHIFT);
SendKeyUp(KeyCode.CONTROL);
}
}
public static void SendKeyUp(KeyCode keyCode)
{
INPUT input = new INPUT
{
type = SendInputEventType.InputKeyboard,
};
input.mkhi.ki = new KEYBDINPUT();
input.mkhi.ki.wVk = (ushort)keyCode;
input.mkhi.ki.wScan = 0;
input.mkhi.ki.dwFlags = 2;
input.mkhi.ki.time = 0;
input.mkhi.ki.dwExtraInfo = IntPtr.Zero;
//INPUT[] inputs = new INPUT[] { input };
if (SendInput(1, ref input, Marshal.SizeOf(typeof(INPUT))) == 0)
throw new Exception();
}
理论上应该有效。到目前为止，我已经单独使用了这两个部分而没有任何问题。
此外，对于CodeProject的代码，对于名为
的特定方法private static void EnsureSubscribedToGlobalMouseEvents()
其中有一行代码需要更改才能在C＃NET 4 Framework中正确使用并正常使用。
即代码
s_MouseHookHandle = SetWindowsHookEx(
WH_MOUSE_LL,
s_MouseDelegate,
Marshal.GetHINSTANCE(
Assembly.GetExecutingAssembly().GetModules()[0]),
0);
应改为：
s_MouseHookHandle = SetWindowsHookEx(
WH_MOUSE_LL,
s_MouseDelegate,
LoadLibrary("user32.dll"),
0);
要使用LoadLibrary，您需要在下面调用此P / Invoke：
[DllImport("kernel32", SetLastError = true, CharSet = CharSet.Ansi)]
static extern IntPtr LoadLibrary([MarshalAs(UnmanagedType.LPStr)]string lpFileName);
参考文献：
如果您认为自己有更好的答案，请提供一个，因为我非常希望看到它：）