private static void DumpState(LowLevelKeyboardProcEventArgs e)
{
if (e.ControlKeyState()) Console.Write("Control-");
if (e.ShiftKeyState) Console.Write("Shift-");
if (e.AltKeyState) Console.Write("Alt-");
if (e.WindowsKeyState) Console.Write("Windows-");
if (e.MenuKeyState) Console.Write("Menu-");
if (!e.IsModifier)
{
Console.Write($"{(Keys)e.KeyCode}");
}
Console.WriteLine(e.KeyUp() ? " released" : " pressed");
}
private static void InterceptKeys_KeyUp(object sender, LowLevelKeyboardProcEventArgs e)
{
DumpState(e);
}
private IntPtr LowLevelKeyPressHandler(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode < 0 ) return CallNextHookEx(_hookId, nCode, wParam, lParam);
var keyData = (KBDLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(KBDLLHOOKSTRUCT));
var keyDown = keyData.KeyDown();
_keyStates[(Keys)keyData.vkCode] = keyDown;
var evt = new LowLevelKeyboardProcEventArgs(keyData.vkCode, keyData.scanCode, keyData.flags, _keyStates);
if (keyDown)
{
if (CheckHotKeys()) nCode = -1; // We've used this hotkey so stop it propagating any further
KeyDown?.Invoke(null, evt);
}
else KeyUp?.Invoke(null, evt);
return CallNextHookEx(_hookId, nCode, wParam, lParam);
}
