C# Detect Key Combination Pressed

Question

Hi,

   How can I detect on my Form if the following key combination is pressed in sequence.

Hold ALT then 'P' then 'A' then 'U' then 'L'

Thanks

Paul.

Answer 1

Hi Paul,

Here's an example how to do it.

private StringBuilder _pressedKeys = new StringBuilder();

protected override void OnKeyDown(KeyEventArgs e)
{
 if (ModifierKeys == Keys.Alt)
 {
  var letter = (char)e.KeyValue;

  if (!char.IsLetterOrDigit(letter))
  {
   return;
  }

  _pressedKeys.Append(letter);

  if (_pressedKeys.ToString().ToLower() == "myword")
  {
   MessageBox.Show("It works!");
   _pressedKeys.Clear();
  }
 }
 else
 {
  _pressedKeys.Clear();
 }

 base.OnKeyDown(e);
}

---

Regards,
Danijel

Blog, Twitter