Для Glopbal Keyboard Hook только для горячих клавиш, тогда Зарегистрируйте горячую клавишу является лучшим (это сделано Microsoft):
https://msdn.microsoft.com/en-us/library/windows/desktop/ms646309(v=vs.85).aspx
Загрузите пример приложения winform и убедитесь сами:
https://code.msdn.microsoft.com/CppRegisterHotkey-7bd897a8 C ++
https://code.msdn.microsoft.com/CSRegisterHotkey-e3f5061e C #
https://code.msdn.microsoft.com/VBRegisterHotkey-50af3179 VB.Net
Приложение Winform:
/****************************** Module Header ******************************\
* Module Name: MainForm.cs
* Project: CSRegisterHotkey
* Copyright (c) Microsoft Corporation.
*
* This is the main form of this application. It is used to initialize the UI
* and handle the events.
*
* This source is subject to the Microsoft Public License.
* See http://www.microsoft.com/opensource/licenses.mspx#Ms-PL.
* All other rights reserved.
*
* THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
* EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
\***************************************************************************/
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace CSRegisterHotkey
{
public partial class MainForm : Form
{
HotKeyRegister hotKeyToRegister = null;
Keys registerKey = Keys.None;
KeyModifiers registerModifiers = KeyModifiers.None;
public MainForm()
{
InitializeComponent();
}
/// <summary>
/// Handle the KeyDown of tbHotKey. In this event handler, check the pressed keys.
/// The keys that must be pressed in combination with the key Ctrl, Shift or Alt,
/// like Ctrl+Alt+T. The method HotKeyRegister.GetModifiers could check whether
/// "T" is pressed.
/// </summary>
private void tbHotKey_KeyDown(object sender, KeyEventArgs e)
{
// The key event should not be sent to the underlying control.
e.SuppressKeyPress = true;
// Check whether the modifier keys are pressed.
if (e.Modifiers != Keys.None)
{
Keys key = Keys.None;
KeyModifiers modifiers = HotKeyRegister.GetModifiers(e.KeyData, out key);
// If the pressed key is valid...
if (key != Keys.None)
{
this.registerKey = key;
this.registerModifiers = modifiers;
// Display the pressed key in the textbox.
tbHotKey.Text = string.Format("{0}+{1}",
this.registerModifiers, this.registerKey);
// Enable the button.
btnRegister.Enabled = true;
}
}
}
/// <summary>
/// Handle the Click event of btnRegister.
/// </summary>
private void btnRegister_Click(object sender, EventArgs e)
{
try
{
// Register the hotkey.
hotKeyToRegister = new HotKeyRegister(this.Handle, 100,
this.registerModifiers, this.registerKey);
// Register the HotKeyPressed event.
hotKeyToRegister.HotKeyPressed += new EventHandler(HotKeyPressed);
// Update the UI.
btnRegister.Enabled = false;
tbHotKey.Enabled = false;
btnUnregister.Enabled = true;
}
catch (ArgumentException argumentException)
{
MessageBox.Show(argumentException.Message);
}
catch (ApplicationException applicationException)
{
MessageBox.Show(applicationException.Message);
}
}
/// <summary>
/// Show a message box if the HotKeyPressed event is raised.
/// </summary>
void HotKeyPressed(object sender, EventArgs e)
{
//Here is the magic!!!!!!!!'
//DO SOMETHING COOL!!! Or Just activate this winform
if (this.WindowState == FormWindowState.Minimized)
{
this.WindowState = FormWindowState.Normal;
}
this.Activate();
}
/// <summary>
/// Handle the Click event of btnUnregister.
/// </summary>
private void btnUnregister_Click(object sender, EventArgs e)
{
// Dispose the hotKeyToRegister.
if (hotKeyToRegister != null)
{
hotKeyToRegister.Dispose();
hotKeyToRegister = null;
}
// Update the UI.
tbHotKey.Enabled = true;
btnRegister.Enabled = true;
btnUnregister.Enabled = false;
}
/// <summary>
/// Dispose the hotKeyToRegister when the form is closed.
/// </summary>
protected override void OnClosed(EventArgs e)
{
if (hotKeyToRegister != null)
{
hotKeyToRegister.Dispose();
hotKeyToRegister = null;
}
base.OnClosed(e);
}
}
}
HotKeyRegister.cs
/****************************** Module Header ******************************\
* Module Name: HotKeyRegister.cs
* Project: CSRegisterHotkey
* Copyright (c) Microsoft Corporation.
*
* This class imports the method RegisterHotKey and UnregisterHotKey in
* user32.dll to define or free a system-wide hot key.
*
* The method Application.AddMessageFilter is used to add a message filter to
* monitor Windows messages as they are routed to their destinations. Before a
* message is dispatched, the method PreFilterMessage could handle it. If a
* WM_HOTKEY messages was generated by the hot key that was registered by this
* HotKeyRegister object, then raise a HotKeyPressed event.
*
* This class also supplies a static method GetModifiers to get the modifiers
* and key from the KeyData property of KeyEventArgs.
*
* This source is subject to the Microsoft Public License.
* See http://www.microsoft.com/opensource/licenses.mspx#Ms-PL.
* All other rights reserved.
*
* THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
* EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
\***************************************************************************/
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Security.Permissions;
namespace CSRegisterHotkey
{
public class HotKeyRegister : IMessageFilter, IDisposable
{
/// <summary>
/// Define a system-wide hot key.
/// </summary>
/// <param name="hWnd">
/// A handle to the window that will receive WM_HOTKEY messages generated by the
/// hot key. If this parameter is NULL, WM_HOTKEY messages are posted to the
/// message queue of the calling thread and must be processed in the message loop.
/// </param>
/// <param name="id">
/// The identifier of the hot key. If the hWnd parameter is NULL, then the hot
/// key is associated with the current thread rather than with a particular
/// window.
/// </param>
/// <param name="fsModifiers">
/// The keys that must be pressed in combination with the key specified by the
/// uVirtKey parameter in order to generate the WM_HOTKEY message. The fsModifiers
/// parameter can be a combination of the following values.
/// MOD_ALT 0x0001
/// MOD_CONTROL 0x0002
/// MOD_SHIFT 0x0004
/// MOD_WIN 0x0008
/// </param>
/// <param name="vk">The virtual-key code of the hot key.</param>
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool RegisterHotKey(IntPtr hWnd, int id,
KeyModifiers fsModifiers, Keys vk);
/// <summary>
/// Frees a hot key previously registered by the calling thread.
/// </summary>
/// <param name="hWnd">
/// A handle to the window associated with the hot key to be freed. This parameter
/// should be NULL if the hot key is not associated with a window.
/// </param>
/// <param name="id">
/// The identifier of the hot key to be freed.
/// </param>
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
/// <summary>
/// Get the modifiers and key from the KeyData property of KeyEventArgs.
/// </summary>
/// <param name="keydata">
/// The KeyData property of KeyEventArgs. The KeyData is a key in combination
/// with modifiers.
/// </param>
/// <param name="key">The pressed key.</param>
public static KeyModifiers GetModifiers(Keys keydata, out Keys key)
{
key = keydata;
KeyModifiers modifers = KeyModifiers.None;
// Check whether the keydata contains the CTRL modifier key.
// The value of Keys.Control is 131072.
if ((keydata & Keys.Control) == Keys.Control)
{
modifers |= KeyModifiers.Control;
key = keydata ^ Keys.Control;
}
// Check whether the keydata contains the SHIFT modifier key.
// The value of Keys.Control is 65536.
if ((keydata & Keys.Shift) == Keys.Shift)
{
modifers |= KeyModifiers.Shift;
key = key ^ Keys.Shift;
}
// Check whether the keydata contains the ALT modifier key.
// The value of Keys.Control is 262144.
if ((keydata & Keys.Alt) == Keys.Alt)
{
modifers |= KeyModifiers.Alt;
key = key ^ Keys.Alt;
}
// Check whether a key other than SHIFT, CTRL or ALT (Menu) is pressed.
if (key == Keys.ShiftKey || key == Keys.ControlKey || key == Keys.Menu)
{
key = Keys.None;
}
return modifers;
}
/// <summary>
/// Specify whether this object is disposed.
/// </summary>
bool disposed = false;
/// <summary>
/// This constant could be found in WinUser.h if you installed Windows SDK.
/// Each windows message has an identifier, 0x0312 means that the mesage is
/// a WM_HOTKEY message.
/// </summary>
const int WM_HOTKEY = 0x0312;
/// <summary>
/// A handle to the window that will receive WM_HOTKEY messages generated by the
/// hot key.
/// </summary>
public IntPtr Handle { get; private set; }
/// <summary>
/// A normal application can use any value between 0x0000 and 0xBFFF as the ID
/// but if you are writing a DLL, then you must use GlobalAddAtom to get a
/// unique identifier for your hot key.
/// </summary>
public int ID { get; private set; }
public KeyModifiers Modifiers { get; private set; }
public Keys Key { get; private set; }
/// <summary>
/// Raise an event when the hotkey is pressed.
/// </summary>
public event EventHandler HotKeyPressed;
public HotKeyRegister(IntPtr handle, int id, KeyModifiers modifiers, Keys key)
{
if (key == Keys.None || modifiers == KeyModifiers.None)
{
throw new ArgumentException("The key or modifiers could not be None.");
}
this.Handle = handle;
this.ID = id;
this.Modifiers = modifiers;
this.Key = key;
RegisterHotKey();
// Adds a message filter to monitor Windows messages as they are routed to
// their destinations.
Application.AddMessageFilter(this);
}
/// <summary>
/// Register the hotkey.
/// </summary>
private void RegisterHotKey()
{
bool isKeyRegisterd = RegisterHotKey(Handle, ID, Modifiers, Key);
// If the operation failed, try to unregister the hotkey if the thread
// has registered it before.
if (!isKeyRegisterd)
{
// IntPtr.Zero means the hotkey registered by the thread.
UnregisterHotKey(IntPtr.Zero, ID);
// Try to register the hotkey again.
isKeyRegisterd = RegisterHotKey(Handle, ID, Modifiers, Key);
// If the operation still failed, it means that the hotkey was already
// used in another thread or process.
if (!isKeyRegisterd)
{
throw new ApplicationException("The hotkey is in use");
}
}
}
/// <summary>
/// Filters out a message before it is dispatched.
/// </summary>
[PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")]
public bool PreFilterMessage(ref Message m)
{
// The property WParam of Message is typically used to store small pieces
// of information. In this scenario, it stores the ID.
if (m.Msg == WM_HOTKEY
&& m.HWnd == this.Handle
&& m.WParam == (IntPtr)this.ID
&& HotKeyPressed != null)
{
// Raise the HotKeyPressed event if it is an WM_HOTKEY message.
HotKeyPressed(this, EventArgs.Empty);
// True to filter the message and stop it from being dispatched.
return true;
}
// Return false to allow the message to continue to the next filter or
// control.
return false;
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
/// <summary>
/// Unregister the hotkey.
/// </summary>
protected virtual void Dispose(bool disposing)
{
// Protect from being called multiple times.
if (disposed)
{
return;
}
if (disposing)
{
// Removes a message filter from the message pump of the application.
Application.RemoveMessageFilter(this);
UnregisterHotKey(Handle, ID);
}
disposed = true;
}
}
}
KeyModifiers.cs:
/****************************** Module Header ******************************\
* Module Name: KeyModifiers.cs
* Project: CSRegisterHotkey
* Copyright (c) Microsoft Corporation.
*
* This enum defines the modifiers to generate the WM_HOTKEY message.
* See http://msdn.microsoft.com/en-us/library/ms646309(VS.85).aspx.
*
* This source is subject to the Microsoft Public License.
* See http://www.microsoft.com/opensource/licenses.mspx#Ms-PL.
* All other rights reserved.
*
* THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
* EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
\***************************************************************************/
using System;
namespace CSRegisterHotkey
{
[Flags]
public enum KeyModifiers
{
None = 0,
Alt = 1,
Control = 2,
Shift = 4,
// Either WINDOWS key was held down. These keys are labeled with the Windows logo.
// Keyboard shortcuts that involve the WINDOWS key are reserved for use by the
// operating system.
Windows = 8
}
}