/// <summary>
/// Detach the keyboard hook; call during shutdown to prevent calls as we unload
/// </summary>
private static void DetachKeyboardHook()
{
if (_hookID != IntPtr.Zero)
{
InterceptKeys.UnhookWindowsHookEx(_hookID);
}
}
public App()
{
ShutdownMode = ShutdownMode.OnExplicitShutdown;
Application.Current.Exit += new ExitEventHandler(Current_Exit);
try
{
_hookID = InterceptKeys.SetHook(_proc);
}
catch
{
DetachKeyboardHook();
}
}
public App()
{
ShutdownMode = ShutdownMode.OnExplicitShutdown;
try
{
_hookID = InterceptKeys.SetHook(_proc);
}
catch
{
if (_hookID != IntPtr.Zero)
{
InterceptKeys.UnhookWindowsHookEx(_hookID);
}
}
}
public static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0)
{
bool alt = (WinForms.Control.ModifierKeys & Keys.Alt) != 0;
bool control = (WinForms.Control.ModifierKeys & Keys.Control) != 0;
int vkCode = Marshal.ReadInt32(lParam);
Keys key = (Keys)vkCode;
if (alt && key == Keys.F4)
{
Application.Current.Shutdown();
return((IntPtr)1); // Handled.
}
if (!AllowKeyboardInput(alt, control, key))
{
return((IntPtr)1); // Handled.
}
}
return(InterceptKeys.CallNextHookEx(_hookID, nCode, wParam, lParam));
}
public static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0)
{
bool Alt = (WinForms.Control.ModifierKeys & Keys.Alt) != 0;
bool Control = (WinForms.Control.ModifierKeys & Keys.Control) != 0;
//Prevent ALT-TAB and CTRL-ESC by eating TAB and ESC. Also kill Windows Keys.
int vkCode = Marshal.ReadInt32(lParam);
Keys key = (Keys)vkCode;
if (Alt && key == Keys.F4)
{
Application.Current.Shutdown();
return((IntPtr)1); //handled
}
if (key == Keys.LWin || key == Keys.RWin)
{
return((IntPtr)1); //handled
}
if (Alt && key == Keys.Tab)
{
return((IntPtr)1); //handled
}
if (Alt && key == Keys.Space)
{
return((IntPtr)1); //handled
}
if (Control && key == Keys.Escape)
{
return((IntPtr)1);
}
if (key == Keys.None)
{
return((IntPtr)1); //handled
}
if (key <= Keys.Back)
{
return((IntPtr)1); //handled
}
if (key == Keys.Menu)
{
return((IntPtr)1); //handled
}
if (key == Keys.Pause)
{
return((IntPtr)1); //handled
}
if (key == Keys.Help)
{
return((IntPtr)1); //handled
}
if (key == Keys.Sleep)
{
return((IntPtr)1); //handled
}
if (key == Keys.Apps)
{
return((IntPtr)1); //handled
}
if (key >= Keys.KanaMode && key <= Keys.HanjaMode)
{
return((IntPtr)1); //handled
}
if (key >= Keys.IMEConvert && key <= Keys.IMEModeChange)
{
return((IntPtr)1); //handled
}
if (key >= Keys.BrowserBack && key <= Keys.BrowserHome)
{
return((IntPtr)1); //handled
}
if (key >= Keys.MediaNextTrack && key <= Keys.OemClear)
{
return((IntPtr)1); //handled
}
Debug.WriteLine(vkCode.ToString() + " " + key);
}
return(InterceptKeys.CallNextHookEx(_hookID, nCode, wParam, lParam));
}