C#システムホットキー
4457 ワード
C#にはシステムホットキーを設定する方法がなく、システムAPIを呼び出して実現する必要がある.
ネット上でセグメントコードを探して、自分で実践してとても使いやすくて、記録して後で使うのに便利です.
HotKeyクラスコードは次のとおりです.
呼び出し方法:
インスタンスのダウンロード:http://files.cnblogs.com/zjfree/HotKey.rar
運転環境:WIN 2003+VS 2005
ネット上でセグメントコードを探して、自分で実践してとても使いやすくて、記録して後で使うのに便利です.
HotKeyクラスコードは次のとおりです.
using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.Windows.Forms;
using System.Runtime.InteropServices;
public class Hotkey : IMessageFilter
{
public delegate void HotkeyEventHandler(int HotKeyID);
public event HotkeyEventHandler OnHotkey;
private Hashtable keyIDs = new Hashtable();
private IntPtr hWnd;
/// <summary>
///
/// </summary>
public enum KeyFlags
{
MOD_NULL = 0x0,
MOD_ALT = 0x1,
MOD_CONTROL = 0x2,
MOD_SHIFT = 0x4,
MOD_WIN = 0x8
}
/// <summary>
/// API
/// </summary>
[DllImport("user32.dll")]
public static extern UInt32 RegisterHotKey(IntPtr hWnd, UInt32 id, UInt32 fsModifiers, UInt32 vk);
/// <summary>
/// API
/// </summary>
[DllImport("user32.dll")]
public static extern UInt32 UnregisterHotKey(IntPtr hWnd, UInt32 id);
/// <summary>
///
/// </summary>
[DllImport("kernel32.dll")]
public static extern UInt32 GlobalAddAtom(String lpString);
/// <summary>
///
/// </summary>
[DllImport("kernel32.dll")]
public static extern UInt32 GlobalDeleteAtom(UInt32 nAtom);
/// <summary>
///
/// </summary>
/// <param name="hWnd"> </param>
public Hotkey(IntPtr hWnd)
{
this.hWnd = hWnd;
Application.AddMessageFilter(this);
}
/// <summary>
///
/// </summary>
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;
}
/// <summary>
///
/// </summary>
public void UnregisterHotkeys()
{
Application.RemoveMessageFilter(this);
foreach (UInt32 key in keyIDs.Values)
{
UnregisterHotKey(hWnd, key);
GlobalDeleteAtom(key);
}
}
/// <summary>
///
/// </summary>
public bool PreFilterMessage(ref Message m)
{
if (m.Msg == 0x312)
{
if (OnHotkey != null)
{
foreach (UInt32 key in keyIDs.Values)
{
if ((UInt32)m.WParam == key)
{
OnHotkey((int)m.WParam);
return true;
}
}
}
}
return false;
}
}
呼び出し方法:
private Hotkey hotkey;
private int hotKey_Ctrl_F2;
private void btnHotKey_Click(object sender, EventArgs e)
{
if (btnHotKey.Text == " ")
{
hotkey = new Hotkey(this.Handle);
// (Ctrl + F2)
hotKey_Ctrl_F2 = hotkey.RegisterHotkey(System.Windows.Forms.Keys.F2, Hotkey.KeyFlags.MOD_CONTROL);
hotkey.OnHotkey += new Hotkey.HotkeyEventHandler(OnHotkey);
btnHotKey.Text = " ";
}
else
{
hotkey.UnregisterHotkeys();
btnHotKey.Text = " ";
}
}
private void OnHotkey(int HotkeyID)
{
if (HotkeyID == hotKey_Ctrl_F2)
{
this.WindowState = FormWindowState.Normal;
this.Focus();
MessageBox.Show("Ctrl+F2");
}
}
インスタンスのダウンロード:http://files.cnblogs.com/zjfree/HotKey.rar
運転環境:WIN 2003+VS 2005