1、新建一個類?HotkeyHelper?

using System; using System.Runtime.InteropServices; using System.Windows.Forms; using System.Collections;namespace 黃聰 {public delegate void HotkeyEventHandler(int hotKeyID);public class HotkeyHelper : IMessageFilter{public event HotkeyEventHandler OnHotkey;public enum KeyFlags{MOD_ALT = 0x1,MOD_CONTROL = 0x2,MOD_SHIFT = 0x4,MOD_WIN = 0x8}class NativeMethods{private NativeMethods() { }#region WIN32 API[DllImport("user32.dll")]public static extern UInt32 RegisterHotKey(IntPtr hWnd, UInt32 id, UInt32 fsModifiers, UInt32 vk);[DllImport("user32.dll")]public static extern UInt32 UnregisterHotKey(IntPtr hWnd, UInt32 id);[DllImport("kernel32.dll")]public static extern UInt32 GlobalAddAtom(String lpString);[DllImport("kernel32.dll")]public static extern UInt32 GlobalDeleteAtom(UInt32 nAtom);#endregion}Hashtable keyIDs = new Hashtable();IntPtr hWnd;public HotkeyHelper(IntPtr hWnd){this.hWnd = hWnd;Application.AddMessageFilter(this);}public int RegisterHotkey(Keys Key, KeyFlags keyflags){UInt32 hotkeyid = NativeMethods.GlobalAddAtom(System.Guid.NewGuid().ToString());NativeMethods.RegisterHotKey((IntPtr)hWnd, hotkeyid, (UInt32)keyflags, (UInt32)Key);keyIDs.Add(hotkeyid, hotkeyid);return (int)hotkeyid;}public void UnregisterHotkeys(){Application.RemoveMessageFilter(this);foreach (UInt32 key in keyIDs.Values){NativeMethods.UnregisterHotKey(hWnd, key);NativeMethods.GlobalDeleteAtom(key);}}public bool PreFilterMessage(ref Message m){if (m.Msg == 0x312){if (OnHotkey != null){foreach (UInt32 key in keyIDs.Values){if ((UInt32)m.WParam == key){OnHotkey((int)m.WParam);return true;}}}}return false;}} }

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2、在窗口創(chuàng)建（FrmMain_Load）的時候注冊快捷鍵

private void FrmMain_Load(object sender, EventArgs e) {hotkeyHelper = new HotkeyHelper(this.Handle);int favKey = hotkeyHelper.RegisterHotkey(Keys.F, HotkeyHelper.KeyFlags.MOD_CONTROL); //注冊Ctrl+Fint nextKey = hotkeyHelper.RegisterHotkey(Keys.G, HotkeyHelper.KeyFlags.MOD_CONTROL);//注冊Ctrl+GhotkeyHelper.OnHotkey += new HotkeyEventHandler(OnHotkey); }

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3、熱鍵的響應(yīng)方法

private void OnHotkey(int hotkeyID) {if (hotkeyID == favKey){//do something }else if (hotkeyID == nextKey){//do something else } }

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4、當(dāng)然在窗體關(guān)閉的時候，一定要注銷掉快捷鍵

private void FrmMain_FormClosing(object sender, FormClosingEventArgs e) {hotkeyHelper.UnregisterHotkeys(); }

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本文轉(zhuǎn)自黃聰博客園博客，原文鏈接：http://www.cnblogs.com/huangcong/p/4047346.html，如需轉(zhuǎn)載請自行聯(lián)系原作者

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