Steal keyboard event Alpha0-9 and disable Unity editor hotkey in custom editor script

Questions & Answers
1

I’m working on an editor script to draw inside of the sceneview. I’m stuck at the point, where I want to use the alpha numeric key (numbers above the letters) to switch between brushes.

void OnSceneGUI(SceneView sceneView)
{
	Event e = Event.current;
	if (e.type == EventType.KeyDown)
	{
		int inputNum;
		if (int.TryParse(e.character.ToString(), out inputNum))
		{
			Debug.Log(inputNum);
			e.Use();
		}
	}

	int controlID = GUIUtility.GetControlID(GetHashCode(), FocusType.Passive);
	if (e.type == EventType.layout)
		HandleUtility.AddDefaultControl(controlID);
}

Adding the default control works fine to block mouse input from selecting objects in the scene view. However, currently when I press the alphanumeric ‘2’ key, the editor still toggles 2D camera mode, although I’m trying to use the event before Unity does. How can I steal that exact key before Unity uses it? Mouse command stealing works fine, and all other keys do not collide with anything, but I would still like to use the number keys.

2

I fixed my issue, but I don’t understand why this makes a difference:

     if (e.type == EventType.KeyDown)
     {
         int inputNum;
         if (int.TryParse(e.character.ToString(), out inputNum))
         {
             Debug.Log(inputNum);
         }
         e.Use();
     }

When I put the e.Use() call outside of the parse method it works. This is actually not entirely want I want, since I only want to steal the event, if it can parse the input correctly and it’s a number. Now it just eats all key down events, but well at least it doesn’t toggle 2D mode anymore.