Question

我有一个看起来像小部件的窗体

我必须禁用alt + f4 win + d等组合键。因为widget没有使用快捷键最小化close的属性。

我在我的小部件中禁用了win + d键但是它禁用了所有应用程序的shorcut

我必须做的是，只为我的应用程序禁用shorcut键，如widget。

当some1按任意win + d时，后台应用程序（如Internet Explorer）（如果打开）将被最小化或最大化。

任何想法我该怎么做？

像雨量计或类似xwidget有相同的属性！任何想法他们怎么能这样做？

Answer 1

您无法在Winforms中执行此操作

您必须创建Widget Project

Answer 2

您可以使用全局键盘钩子，您可以看到如何执行此操作的示例here，然后在你的钩子中听取win + d组合，在这种情况下不要通过呼叫

Answer 3

public partial class MainForm : Form
{
        readonly KeyboardFilter kbFilter = new KeyboardFilter(new Keys[] 
        { 
            Keys.LWin | Keys.D,
            Keys.RWin | Keys.D, 
            Keys.LWin | Keys.X, 
            Keys.RWin | Keys.X,
            Keys.Alt | Keys.F4
        });
}

请务必在KeyboardFilter.Dispose()事件中使用Form_Closing。

KeyboardFilter课程取自Here

class KeyboardFilter : IDisposable
{
    private Keys[] mFilter;
    private IntPtr mHook;
    private readonly LowLevelKeyboardProc mProc;

    public KeyboardFilter(Keys[] keysToFilter)
    {
        // Install hook
        mFilter = keysToFilter;
        ProcessModule mod = Process.GetCurrentProcess().MainModule;
        mProc = KeyboardProc;   // Avoid garbage collector problems
        mHook = SetWindowsHookEx(13, mProc, GetModuleHandle(mod.ModuleName), 0);
        if (mHook == IntPtr.Zero) throw new Win32Exception(Marshal.GetLastWin32Error(), "Failed to set hook");
    }
    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }
    protected virtual void Dispose(bool disposing)
    {
        if (disposing)
        {
            // Release hook
            if (mHook != IntPtr.Zero)
            {
                UnhookWindowsHookEx(mHook);
                mHook = IntPtr.Zero;
            }
        }
    }
    ~KeyboardFilter()
    {
        Dispose(false);
    }
    private IntPtr KeyboardProc(int nCode, IntPtr wp, IntPtr lp)
    {
        // Callback, filter key
        if (nCode >= 0)
        {
            KBDLLHOOKSTRUCT info = (KBDLLHOOKSTRUCT)Marshal.PtrToStructure(lp, typeof(KBDLLHOOKSTRUCT));
            foreach (Keys key in mFilter)
                if ((key & Keys.KeyCode) == info.key && CheckModifier(key)) return (IntPtr)1;
        }
        return CallNextHookEx(mHook, nCode, wp, lp);
    }
    private static bool CheckModifier(Keys key)
    {
        // Check if modifier key in required state
        if ((key & Keys.Control) == Keys.Control &&
          GetAsyncKeyState(Keys.LControlKey) == 0 && GetAsyncKeyState(Keys.RControlKey) == 0) return false;
        if ((key & Keys.Shift) == Keys.Shift &&
          GetAsyncKeyState(Keys.LShiftKey) == 0 && GetAsyncKeyState(Keys.RShiftKey) == 0) return false;
        if ((key & Keys.Alt) == Keys.Alt &&
          GetAsyncKeyState(Keys.LMenu) == 0 && GetAsyncKeyState(Keys.RMenu) == 0) return false;
        return true;
    }

    // P/Invoke declarations
    [StructLayout(LayoutKind.Sequential)]
    private struct KBDLLHOOKSTRUCT
    {
        public Keys key;
        public int scanCode;
        public int flags;
        public int time;
        public IntPtr extra;
    }
    private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern IntPtr SetWindowsHookEx(int id, LowLevelKeyboardProc callback, IntPtr hMod, uint dwThreadId);
    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern bool UnhookWindowsHookEx(IntPtr hook);
    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern IntPtr CallNextHookEx(IntPtr hook, int nCode, IntPtr wp, IntPtr lp);
    [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    private static extern IntPtr GetModuleHandle(string name);
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    private static extern short GetAsyncKeyState(Keys key); 
}

如何在Windows窗体中禁用Windows + D组合键

3 个答案: