我想通过一个按键实现“Ctrl+F”这个键盘事件，但不知道代码该如何编写，请赐教
我真是新手，在网上找到这个方法，但是编不出，麻烦大神看下其中我不懂的几个比较基本的东西：
1.FormCreate中注册热键：
这个FormCreate怎么写，我需要建立一个空的C#还是什么项目，空的C#出来就是namespace Project5
{
class Class1
{
}
} ？
RegisterHotKey(Handle, 125, MOD_CONTROL + MOD_ALT, $58); {Ctrl+Alt+X}
2.响应热键： private procedure WMHotKey(var Msg: TWMHotKey); message WM_HOTKEY; ... procedure TfrmAdKiller.WMHotKey(var Msg: TWMHotKey); begin if Msg.HotKey = 125 then begin if Visible then LoadAppIcon else UnLoadIcon; end; end; 3.FormDestroy中释放热键： UnregisterHotKey(Handle, 125); C# 键盘
[解决办法]
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Collections;
namespace test
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public delegate void HotkeyEventHandler(int HotKeyID);//热键事件委托
private int Hotkey1;
private const int WM_HOTKEY = 0x0312; // 热键消息编号
public class Hotkey : System.Windows.Forms.IMessageFilter
{
Hashtable keyIDs = new Hashtable();//热键哈希表
IntPtr hWnd;
public event HotkeyEventHandler OnHotkey; //热键事件
public enum KeyFlags//控制键编码
{
MOD_ALT = 0x1,
MOD_CONTROL = 0x2,
MOD_SHIFT = 0x4,
MOD_WIN = 0x8
}
[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);
public Hotkey(IntPtr hWnd)
{
this.hWnd = hWnd;
Application.AddMessageFilter(this);
}
public int RegisterHotkey(Keys Key, KeyFlags keyflags)
{
UInt32 hotkeyid = GlobalAddAtom(System.Guid.NewGuid().ToString());
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)
{
UnregisterHotKey(hWnd, key);
GlobalDeleteAtom(key);
}
}
public bool PreFilterMessage(ref System.Windows.Forms.Message m)//热键处理过程
{
//判断是否为热键消息
if (m.Msg == WM_HOTKEY)
{
if (OnHotkey != null)
{
foreach (UInt32 key in keyIDs.Values)
{
if ((UInt32)m.WParam == key)
{
OnHotkey((int)m.WParam);
return true;
}
}
}
}
return false;
}
}
public void OnHotkey(int HotkeyID) //Ctrl+F
{
if (HotkeyID == Hotkey1)
{
MessageBox.Show("按了Ctrl+F");
}
else
{
this.Visible = false;
}
}
private void Form1_Load(object sender, EventArgs e)
{
Hotkey hotkey;
hotkey = new Hotkey(this.Handle);
Hotkey1 = hotkey.RegisterHotkey(System.Windows.Forms.Keys.F, Hotkey.KeyFlags.MOD_CONTROL); //定义快键Ctrl+F
hotkey.OnHotkey += new HotkeyEventHandler(OnHotkey);
}
}
}
