C# register global hotkey ,onekey 注册多个全局热键以及单个全局热键

ゝ一纸荒年。 2021-09-30 12:32 577阅读 0赞

我们需要用非Hook的方法,来给我们的app 或者winform注册热键. 就像下面的 , 欧陆词典注册的一个热键F6一样,

在winform最小化的情况下,也能够全局响应热键. 这里使用系统API来注册.能够达到最好的性能.

代码如下:

[![image][]][image 1]

using System;  
using System.Collections.Generic;  
using System.ComponentModel;  
using System.Data;  
using System.Drawing;  
using System.Linq;  
using System.Text;  
using System.Windows.Forms;

namespace ExampleForm  
\{  
    public partial class Form1 : Form  
    \{  
        //\[System.Runtime.InteropServices.DllImport("user32.dll")\]  
        //private static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vk);  
        \[System.Runtime.InteropServices.DllImport("user32.dll")\]  
        private static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vk);  
        \[System.Runtime.InteropServices.DllImport("user32.dll")\]  
        private static extern bool UnregisterHotKey(IntPtr hWnd, int id);

enum KeyModifier  
        \{  
            None = 0,  
            Alt = 1,  
            Control = 2,  
            Shift = 4,  
            WinKey = 8  
        \}  
        public Form1()  
        \{  
            InitializeComponent();  
            int id = 0;     // The id of the hotkey.  
            //RegisterHotKey(this.Handle, id, (int)KeyModifier.Shift, Keys.A.GetHashCode());       // 注册 Shift + A 为全局热键  
            RegisterHotKey(this.Handle, id, 0, Keys.F3.GetHashCode());//注册单个按钮F3,只需要把int fsModifiers设置为0即可  
        \}  
        protected override void WndProc(ref Message m)  
        \{  
            base.WndProc(ref m);

if (m.Msg == 0x0312)  
            \{

Keys key = (Keys)(((int)m.LParam >> 16) & 0xFFFF);                  // The key of the hotkey that was pressed.  
                KeyModifier modifier = (KeyModifier)((int)m.LParam & 0xFFFF);       // The modifier of the hotkey that was pressed.  
                int id = m.WParam.ToInt32();                                        // The id of the hotkey that was pressed.

MessageBox.Show("Hotkey has been pressed!");  
                // do something  
            \}  
        \}

private void ExampleForm\_FormClosing(object sender, FormClosingEventArgs e)  
        \{  
            UnregisterHotKey(this.Handle, 0);       // Unregister hotkey with id 0 before closing the form. You might want to call this more than once with different id values if you are planning to register more than one hotkey.  
        \}  
        private void Form1\_Load(object sender, EventArgs e)  
        \{

private void button1\_Click(object sender, EventArgs e)  
        \{  
        \}  
    \}  
\}

转载于:https://www.cnblogs.com/caianhua/p/6856129.html

[image]: /images/20210724/4c6d201bbefc42638388902abf946ba9.png
[image 1]: http://images2015.cnblogs.com/blog/545403/201705/545403-20170515140451650-420441217.png