■ RegisterHotKey/UnregisterHotKey API 함수를 사용해 전역 핫키를 사용하는 방법을 보여준다.
▶ MainWindow.xaml
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<Window x:Class="TestProject.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="800" Height="600" Title="RegisterHotKey/UnregisterHotKey API 함수를 사용해 전역 핫키 사용하기" FontFamily="나눔고딕코딩" FontSize="16"> <Grid> <TextBlock Name="textBlock" /> </Grid> </Window> |
▶ MainWindow.xaml.cs
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using System; using System.Runtime.InteropServices; using System.Windows; using System.Windows.Interop; namespace TestProject { /// <summary> /// 메인 윈도우 /// </summary> public partial class MainWindow : Window { //////////////////////////////////////////////////////////////////////////////////////////////////// Import ////////////////////////////////////////////////////////////////////////////////////////// Static //////////////////////////////////////////////////////////////////////////////// Private #region 핫키 등록하기 - RegisterHotKey(windowHandle, id, modifiers, virtualKey) /// <summary> /// 핫키 등록하기 /// </summary> /// <param name="windowHandle">윈도우 핸들</param> /// <param name="id">ID</param> /// <param name="modifiers">수정자</param> /// <param name="virtualKey">가상 키</param> /// <returns>처리 결과</returns> [DllImport("user32")] private static extern bool RegisterHotKey(IntPtr windowHandle, int id, uint modifiers, uint virtualKey); #endregion #region 핫키 등록 취소하기 - UnregisterHotKey(windowHandle, id) /// <summary> /// 핫키 등록 취소하기 /// </summary> /// <param name="windowHandle">윈도우 핸들</param> /// <param name="id">ID</param> /// <returns>처리 결과</returns> [DllImport("user32")] private static extern bool UnregisterHotKey(IntPtr windowHandle, int id); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// HOTKEY_ID /// </summary> private const int HOTKEY_ID = 9000; /// <summary> /// MODIFIER_NONE /// </summary> private const uint MODIFIER_NONE = 0x0000; /// <summary> /// MODIFIER_ALT /// </summary> private const uint MODIFIER_ALT = 0x0001; /// <summary> /// MODIFIER_CONTROL /// </summary> private const uint MODIFIER_CONTROL = 0x0002; /// <summary> /// MODIFIER_SHIFT /// </summary> private const uint MODIFIER_SHIFT = 0x0004; /// <summary> /// MODIFIER_WINDOWS /// </summary> private const uint MODIFIER_WINDOWS = 0x0008; /// <summary> /// VK_CAPITAL /// </summary> /// <remarks>CAPS LOCK</remarks> private const uint VK_CAPITAL = 0x14; /// <summary> /// WM_HOTKEY /// </summary> private const int WM_HOTKEY = 0x0312; /// <summary> /// 윈도우 핸들 /// </summary> private IntPtr windowHandle; /// <summary> /// 윈도우 핸들 소스 /// </summary> private HwndSource windowHandleSource; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainWindow() /// <summary> /// 생성자 /// </summary> public MainWindow() { InitializeComponent(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Protected #region 소스 초기화시 처리하기 - OnSourceInitialized(e) /// <summary> /// 소스 초기화시 처리하기 /// </summary> /// <param name="e">이벤트 발생자</param> protected override void OnSourceInitialized(EventArgs e) { base.OnSourceInitialized(e); this.windowHandle = new WindowInteropHelper(this).Handle; this.windowHandleSource = HwndSource.FromHwnd(this.windowHandle); this.windowHandleSource.AddHook(ProcessWindowHandleHooking); RegisterHotKey(this.windowHandle, HOTKEY_ID, MODIFIER_CONTROL, VK_CAPITAL); } #endregion #region 종료시 처리하기 - OnClosed(e) /// <summary> /// 종료시 처리하기 /// </summary> /// <param name="e">이벤트 인자</param> protected override void OnClosed(EventArgs e) { this.windowHandleSource.RemoveHook(ProcessWindowHandleHooking); UnregisterHotKey(this.windowHandle, HOTKEY_ID); base.OnClosed(e); } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Public #region 윈도우 핸들 후킹 처리하기 - ProcessWindowHandleHooking(windowHandle, message, wordParameter, longParameter, handled) /// <summary> /// 윈도우 핸들 후킹 처리하기 /// </summary> /// <param name="windowHandle">윈도우 핸들</param> /// <param name="message">메시지</param> /// <param name="wordParameter">WORD 매개 변수</param> /// <param name="longParameter">LONG 매개 변수</param> /// <param name="handled">처리 여부</param> /// <returns>처리 결과</returns> private IntPtr ProcessWindowHandleHooking(IntPtr windowHandle, int message, IntPtr wordParameter, IntPtr longParameter, ref bool handled) { switch(message) { case WM_HOTKEY : switch(wordParameter.ToInt32()) { case HOTKEY_ID : int virtualKey = (((int)longParameter >> 16) & 0xffff); if(virtualKey == VK_CAPITAL) { this.textBlock.Text += "CTRL+CAPS 키가 눌렸습니다." + Environment.NewLine; } handled = true; break; } break; } return IntPtr.Zero; } #endregion } } |
