// Asynch Call from the GlobalKbdHook
private void _kbdHook_KeyboardPressed(object sender, GlobalKbdHookEventArgs e)
{
if (!_kbdAction)
{
return; // not allowed at this time...
}
// maintain the currently held down modifiers
if (e.KeyDown)
{
// pressed
_modifiers |= (e.KeyboardData.VirtualCode == (int)Keys.LMenu) ? KeyModifier.LAlt : KeyModifier.None;
_modifiers |= (e.KeyboardData.VirtualCode == (int)Keys.RMenu) ? KeyModifier.RAlt : KeyModifier.None;
_modifiers |= (e.KeyboardData.VirtualCode == (int)Keys.LControlKey) ? KeyModifier.LCtrl : KeyModifier.None;
_modifiers |= (e.KeyboardData.VirtualCode == (int)Keys.RControlKey) ? KeyModifier.RCtrl : KeyModifier.None;
_modifiers |= (e.KeyboardData.VirtualCode == (int)Keys.LShiftKey) ? KeyModifier.LShift : KeyModifier.None;
_modifiers |= (e.KeyboardData.VirtualCode == (int)Keys.RShiftKey) ? KeyModifier.RShift : KeyModifier.None;
}
else
{
// released
_modifiers &= (e.KeyboardData.VirtualCode == (int)Keys.LMenu) ? ~KeyModifier.LAlt : ~KeyModifier.None;
_modifiers &= (e.KeyboardData.VirtualCode == (int)Keys.RMenu) ? ~KeyModifier.RAlt : ~KeyModifier.None;
_modifiers &= (e.KeyboardData.VirtualCode == (int)Keys.LControlKey) ? ~KeyModifier.LCtrl : ~KeyModifier.None;
_modifiers &= (e.KeyboardData.VirtualCode == (int)Keys.RControlKey) ? ~KeyModifier.RCtrl : ~KeyModifier.None;
_modifiers &= (e.KeyboardData.VirtualCode == (int)Keys.LShiftKey) ? ~KeyModifier.LShift : ~KeyModifier.None;
_modifiers &= (e.KeyboardData.VirtualCode == (int)Keys.RShiftKey) ? ~KeyModifier.RShift : ~KeyModifier.None;
}
//Console.WriteLine( $"{e.KeyDown,6} {e.KeyboardData.VirtualCode} {(Keys)e.KeyboardData.VirtualCode} {e.KeyboardData.Flags} {e.KeyboardData.AdditionalInformation}" );
if (e.KeyDown)
{
// proc keys only if enabled
for (int i = 0; i < _cat.Count; i++)
{
var hi = _cat.ElementAt(i);
hi.Value.TestAndCall(e.KeyboardData.VirtualCode, _modifiers); // will exec if the key and mod matches
}
// Eat Input if true, else it will go to all other subscribers too
//e.Handled = true;
}
}
// called by WIN on Keys
public IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam)
{
bool fEatKeyStroke = false;
var wparamTyped = wParam.ToInt32();
if (Enum.IsDefined(typeof(KeyboardState), wparamTyped))
{
object o = Marshal.PtrToStructure(lParam, typeof(LowLevelKeyboardInputEvent));
LowLevelKeyboardInputEvent p = (LowLevelKeyboardInputEvent)o;
KeyboardState kbdState = (KeyboardState)wparamTyped;
bool kDown = kbdState == KeyboardState.KeyDown || kbdState == KeyboardState.SysKeyDown;
var eventArguments = new GlobalKbdHookEventArgs(p, kbdState, kDown);
EventHandler <GlobalKbdHookEventArgs> handler = KeyboardPressed;
handler?.Invoke(this, eventArguments);
fEatKeyStroke = eventArguments.Handled;
}
// propagates or closes the event (based on Handled)
return(fEatKeyStroke ? (IntPtr)1 : CallNextHookEx(IntPtr.Zero, nCode, wParam, lParam));
}
