带有通知图标的无窗口应用程序的全局热键

Question

我有一个无窗口的winforms应用程序，它使用ApplicationContext来设置用户可以控制的NotifyIcon(TrayIcon(。但我也想使用热键。

我找到了一些使用RegisterHotkey的好方法(例如。无窗口 .NET 应用程序中的全局热键(，但它们都需要一个窗体或本机窗口，由于副作用，我不想使用它们。

但是我已经使用了NotifyIcon(TrayIcon(，我想它已经有某种消息管道来触发点击等。如何使用该热键注册全局热键？

Answer 1

我需要相同的，最后我在另一个问题上找到了这个答案 使用 C# 设置全局热键 它与托盘(通知图标(应用程序完美配合。

我正在对齐托盘应用的代码，只需按照以下步骤操作：

1. 创建新类"键盘钩">

using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace MyTrayApp
{
public sealed class KeyboardHook : IDisposable
{
// Registers a hot key with Windows.
[DllImport("user32.dll")]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);
// Unregisters the hot key with Windows.
[DllImport("user32.dll")]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
/// <summary>
/// Represents the window that is used internally to get the messages.
/// </summary>
private class Window : NativeWindow, IDisposable
{
private static int WM_HOTKEY = 0x0312;
public Window()
{
// create the handle for the window.
this.CreateHandle(new CreateParams());
}
/// <summary>
/// Overridden to get the notifications.
/// </summary>
/// <param name="m"></param>
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
// check if we got a hot key pressed.
if (m.Msg == WM_HOTKEY)
{
// get the keys.
Keys key = (Keys)(((int)m.LParam >> 16) & 0xFFFF);
ModifierKeys modifier = (ModifierKeys)((int)m.LParam & 0xFFFF);
// invoke the event to notify the parent.
if (KeyPressed != null)
KeyPressed(this, new KeyPressedEventArgs(modifier, key));
}
}
public event EventHandler<KeyPressedEventArgs> KeyPressed;
#region IDisposable Members
public void Dispose()
{
this.DestroyHandle();
}
#endregion
}
private Window _window = new Window();
private int _currentId;
public KeyboardHook()
{
// register the event of the inner native window.
_window.KeyPressed += delegate (object sender, KeyPressedEventArgs args)
{
if (KeyPressed != null)
KeyPressed(this, args);
};
}
/// <summary>
/// Registers a hot key in the system.
/// </summary>
/// <param name="modifier">The modifiers that are associated with the hot key.</param>
/// <param name="key">The key itself that is associated with the hot key.</param>
public void RegisterHotKey(ModifierKeys modifier, Keys key)
{
// increment the counter.
_currentId = _currentId + 1;
// register the hot key.
if (!RegisterHotKey(_window.Handle, _currentId, (uint)modifier, (uint)key))
{
string message = "The hotkey "Ctrl+Alt+K" could not be registered. This problem is probably causedby another tool claiming usage of the same hotkey!rnrnAll KeepOn features still work directly from the tray icon context menu without hotkey.";
string title = "KeepOn";
MessageBoxButtons buttons = MessageBoxButtons.OK;
MessageBoxIcon icon = MessageBoxIcon.Exclamation;
DialogResult result = MessageBox.Show(message, title, buttons,icon);
}
}
/// <summary>
/// A hot key has been pressed.
/// </summary>
public event EventHandler<KeyPressedEventArgs> KeyPressed;
#region IDisposable Members
public void Dispose()
{
// unregister all the registered hot keys.
for (int i = _currentId; i > 0; i--)
{
UnregisterHotKey(_window.Handle, i);
}
// dispose the inner native window.
_window.Dispose();
}
#endregion
}
/// <summary>
/// Event Args for the event that is fired after the hot key has been pressed.
/// </summary>
public class KeyPressedEventArgs : EventArgs
{
private ModifierKeys _modifier;
private Keys _key;
internal KeyPressedEventArgs(ModifierKeys modifier, Keys key)
{
_modifier = modifier;
_key = key;
}
public ModifierKeys Modifier
{
get { return _modifier; }
}
public Keys Key
{
get { return _key; }
}
}
/// <summary>
/// The enumeration of possible modifiers.
/// </summary>
[Flags]
public enum ModifierKeys : uint
{
Alt = 1,
Control = 2,
Shift = 4,
Win = 8
}
}

2. 将代码添加到主类(应用启动类(

在程序.cs文件的 Main(( 方法中检查您的启动类Application.Run(new TrayApplicationContext());

public class TrayApplicationContext : ApplicationContext
{
KeyboardHook hook = new KeyboardHook();
public TaskTrayApplicationContext()
{
// register the event that is fired after the key press.
hook.KeyPressed += new EventHandler<KeyPressedEventArgs>(Close_App);

// register the control + alt+ F12 combination as hot key.
hook.RegisterHotKey(ModifierKeys.Control | ModifierKeys.Alt, Keys.F12);
}
void Close_App(object sender, KeyPressedEventArgs e)
{
Application.Exit();
}
}

感谢堆栈溢出社区使之成为可能！！