Access to API from code

[mkorman9]

Please, allow us to access widgets API from haxe code. Creating tons of .xml files for every simple state complicates a project and sometime forces to change a code design. API like this:

var textBox = new FlxUITextBox(... positioning and format arguments ...);
textBox.onTextChange = someCallback;
add(textBox);

would be nice :)

[larsiusprime]

I'll work on this in the next update :)