private void GlobalKeyboardHook_KeyDown(object sender, KeyHookEventArgs e)
{
if (Interlocked.CompareExchange(ref this.m_stasis, 1, 0) == 1) return;
this.Invoke(new Action(this.GlobalKeyboardHook_KeyDown));
}
private IntPtr hookProc(int code, IntPtr wParam, ref NativeMethods.keyboardHookStruct lParam)
{
if (code >= 0)
{
var key = (Keys)lParam.vkCode;
var wparam = wParam.ToInt64();
bool d = (wparam == NativeMethods.WM_KEYDOWN || wparam == NativeMethods.WM_SYSKEYDOWN);
bool u = (wparam == NativeMethods.WM_KEYUP || wparam == NativeMethods.WM_SYSKEYUP);
if (d ^ u)
{
switch (key)
{
case Keys.Control:
case Keys.ControlKey:
case Keys.LControlKey:
case Keys.RControlKey:
this.m_control = d ? Keys.Control : Keys.None;
break;
case Keys.Shift:
case Keys.ShiftKey:
case Keys.LShiftKey:
case Keys.RShiftKey:
this.m_shift = d ? Keys.Shift : Keys.None;
break;
case Keys.Alt:
case Keys.Menu:
case Keys.RMenu:
case Keys.LMenu:
this.m_alt = d ? Keys.Alt : Keys.None;
break;
}
}
key = key | this.m_control | this.m_shift | this.m_alt;
if (this.KeyUp != null && this.Up.Contains(key))
{
var arg = new KeyHookEventArgs(key);
KeyUp.Invoke(this, arg);
if (arg.Handled)
return new IntPtr(1);
}
if (this.KeyDown != null && this.Down.Contains(key))
{
var arg = new KeyHookEventArgs(key);
KeyDown.Invoke(this, arg);
if (arg.Handled)
return new IntPtr(1);
}
}
return NativeMethods.CallNextHookEx(m_hwnd, code, wParam, ref lParam);
}