89 lines
2.7 KiB
C#
89 lines
2.7 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Windows;
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using System.Windows.Input;
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using System.Windows.Interop;
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namespace Ink_Canvas
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{
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static class Hotkey
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{
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#region 系统api
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[DllImport("user32.dll")]
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[return: MarshalAs(UnmanagedType.Bool)]
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static extern bool RegisterHotKey(IntPtr hWnd, int id, HotkeyModifiers fsModifiers, uint vk);
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[DllImport("user32.dll")]
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static extern bool UnregisterHotKey(IntPtr hWnd, int id);
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#endregion
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/// <summary>
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/// 注册快捷键
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/// </summary>
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/// <param name="window">持有快捷键窗口</param>
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/// <param name="fsModifiers">组合键</param>
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/// <param name="key">快捷键</param>
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/// <param name="callBack">回调函数</param>
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public static bool Regist(Window window, HotkeyModifiers fsModifiers, Key key, HotKeyCallBackHanlder callBack)
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{
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var hwnd = new WindowInteropHelper(window).Handle;
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var _hwndSource = HwndSource.FromHwnd(hwnd);
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if (keyid == 10)
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{
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_hwndSource.AddHook(WndProc);
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}
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int id = keyid++;
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var vk = KeyInterop.VirtualKeyFromKey(key);
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if (!RegisterHotKey(hwnd, id, fsModifiers, (uint)vk))
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{
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//throw new Exception("regist hotkey fail.");
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return false;
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}
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keymap[id] = callBack;
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return true;
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}
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/// <summary>
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/// 快捷键消息处理
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/// </summary>
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static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
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{
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if (msg == WM_HOTKEY)
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{
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int id = wParam.ToInt32();
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if (keymap.TryGetValue(id, out var callback))
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{
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callback();
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}
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}
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return IntPtr.Zero;
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}
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/// <summary>
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/// 注销快捷键
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/// </summary>
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/// <param name="hWnd">持有快捷键窗口的句柄</param>
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/// <param name="callBack">回调函数</param>
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public static void UnRegist(IntPtr hWnd, HotKeyCallBackHanlder callBack)
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{
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foreach (KeyValuePair<int, HotKeyCallBackHanlder> var in keymap)
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{
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if (var.Value == callBack)
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UnregisterHotKey(hWnd, var.Key);
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}
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}
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const int WM_HOTKEY = 0x312;
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static int keyid = 10;
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static Dictionary<int, HotKeyCallBackHanlder> keymap = new Dictionary<int, HotKeyCallBackHanlder>();
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public delegate void HotKeyCallBackHanlder();
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}
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}
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