EventType.ValidateCommand
Description

Validates a special command (e.g. copy & paste).

"Copy", "Cut", "Paste", "Delete", "FrameSelected", "Duplicate", "SelectAll" and so on. Sent only in the editor.

Example: Make pasting work in current window or control:
	function OnGUI()
	{
		var e:Event = Event.current;
		
		if (e.type == EventType.ValidateCommand && e.commandName == "Paste")
		{
			Debug.Log("validate paste");
			e.Use(); // without this line we won't get ExecuteCommand
		}
		
		if (e.type == EventType.ExecuteCommand && e.commandName == "Paste")		
		{
			Debug.Log("Pasting: " + EditorGUIUtility.systemCopyBuffer);
		}
	}