@ndrwdslv, thank you. You might want to check out my Bar Sub-classes scenario which demonstrates different ways to give it functionality. It is at the following URL:
http://www.greenfoot.org/scenarios/5677
@RadikulRAM, the code is open source (you can download this scenario and look at the code yourself within the Greenfoot application. Just click on the big green 'Open in Greenfoot' button on the right above the scenario window frame.
What FlyingRabidUnicornPig is saying is that while editing the text in the TextBox object, if the user presses the 'Del' key, it appears to add a space.
@al_griff, the previous post has the code to do what I believe you wanted to do. The last line should probably read 'super.act()' (in case you add an act to your world -- if you do, make sure you call 'super.act()' in it also or the scrolling will not work).
2013/4/21
Progress bar/Health bar class
2013/4/20
Progress bar/Health bar class
2013/4/19
Speed3D
2013/4/19
ChessWorld
2013/4/16
Snake Tracks Demo
2013/4/16
Snake Demo 2
2013/4/13
GUI Components
2013/4/10
GUI Components
2013/4/10
Scrolling SuperWorld