如何使用全局快捷键

GlobalHotKey.cs

public class MainWindow {
    private short atom;
    private HwndSource hwndSource;
    
    public MainWindow {
        this.Loaded += (sender, args) => {
            // 挂载全局快捷键
            var helper = new WindowInteropHelper(this);
            hwndSource = HwndSource.FromHwnd(helper.Handle);
            if(hwndSource != null)
                hwndSource.AddHook(MainWindowProc);

            atom = NativeMethods.GlobalAddAtom("SybaseExplorer");
            if(atom == 0)
                throw new Win32Exception(Marshal.GetLastWin32Error());
            //TODO: 需支持自定义快捷键
            if(!NativeMethods.RegisterHotKey(helper.Handle, atom, NativeMethods.MOD_SHIFT | NativeMethods.MOD_CONTROL, NativeMethods.VK_KEY_C))
                throw new Win32Exception(Marshal.GetLastWin32Error());
        };

        // 取消挂载全局快捷键
        this.Closed += (sender, args) => {
            if(atom != 0)
                NativeMethods.UnregisterHotKey(hwndSource.Handle, atom);
        };
        
        /// <summary>
        ///     处理主窗体的消息
        /// </summary>
        /// <param name="hwnd"></param>
        /// <param name="msg"></param>
        /// <param name="wParam"></param>
        /// <param name="lParam"></param>
        /// <param name="handled"></param>
        /// <returns></returns>
        private IntPtr MainWindowProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) {
            switch(msg) {
                case NativeMethods.WM_HOTKEY:
                    //TODO: Business Logics
                    handled = true;
                    break;
            }
            return IntPtr.Zero;
        }
    }
}

NativeMethods.cs

using System;
using System.Runtime.InteropServices;

internal static class NativeMethods {
    #region HotKey

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool UnregisterHotKey(IntPtr hWnd, int id);

    [DllImport("kernel32", SetLastError = true, CharSet = CharSet.Unicode)]
    public static extern short GlobalAddAtom(string lpString);

    [DllImport("kernel32", SetLastError = true)]
    public static extern short GlobalDeleteAtom(short nAtom);

    public const int MOD_ALT = 1;
    public const int MOD_CONTROL = 2;
    public const int MOD_SHIFT = 4;
    public const int MOD_WIN = 8;

    public const uint VK_KEY_C = 0x43;

    public const int WM_HOTKEY = 0x312;

    #endregion
}