Question

我正在尝试在Visual c＃2012中注册一个全局热键，构建目标框架.NET3，在使用http://www.dreamincode.net/forums/topic/180436-global-hotkeys/作为教程之后，我得到了以下（缩写）文件：

GlobalHotkey.cs

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace barcodelabel
{
    public class GlobalHotkey
    {
        private int modifier;
        private int key;
        private IntPtr hWnd;
        private int id;

        public GlobalHotkey(int modifier, Keys key, Form form)
        {
            this.modifier = modifier;
            this.key = (int)key;
            this.hWnd = form.Handle;
            id = this.GetHashCode();
        }

        public bool Register()
        {
            return RegisterHotKey(hWnd, id, modifier, key);
        }

        public bool Unregister()
        {
            return UnregisterHotKey(hWnd, id);
        }

        public override int GetHashCode()
        {
            return modifier ^ key ^ hWnd.ToInt32();
        }

        [DllImport("user32.dll")]
        private static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vk);

        [DllImport("user32.dll")]
        private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
    }
}

GlobalHotkeyConstants.cs

using System;
using System.Collections.Generic;
using System.Text;

namespace barcodelabel
{
    class GlobalHotkeyConstants
    {
        public const int NOMOD = 0x0000;
        public const int ALT = 0x0001;
        public const int CTRL = 0x0002;
        public const int SHIFT = 0x0004;
        public const int WIN = 0x0008;

        //windows message id for hotkey
        public const int WM_HOTKEY_MSG_ID = 0x0312;

    }
}

我的Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Windows;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using Microsoft.Win32;

namespace barcodelabel
{
    public partial class Form1 : Form
    {

        private GlobalHotkey ghk;

         protected override void WndProc(ref Message m)
        {
            if (m.Msg == GlobalHotkeyConstants.WM_HOTKEY_MSG_ID) {
                MessageBox.Show("HOTKEY PRESSED");

            }
            base.WndProc(ref m);
        }

       public Form1()
       {
           InitializeComponent();
           this.ghk = new GlobalHotkey(GlobalHotkeyConstants.SHIFT,  Keys.F10, this);
       }

       private void Form1_Load(object sender, EventArgs e)
       {
           if (!this.ghk.Register()) 
           {
               MessageBox.Show("Hotkey could not be registered");
           }
       }

       private void Form1_FormClosing(object sender, FormClosingEventArgs e)
       {
           this.ghk.Unregister();
       }
   }

无论我想选择哪种热键，都无法注册。我尝试使用http://hkcmdr.anymania.com/中的Hotkey Explorer检查热键是否已经被取走，但它只告诉我它是免费的。

我该怎么做才能解决这个问题？

Answer 1

我已经在我的VS中记下了你的代码并且它运行正常。如果要查找错误，请不要仅检查布尔返回的表单API。如果返回False，请尝试使用GetLastError API。然后你会有一个错误代码。请参阅MSDN并获取错误说明。

我想要注册的任何热键似乎已经被采用了

1 个答案: