How control can be customized so that it changes its picture when mouse moves over it

[Anderomeda]

How control can be customized so that it changes its picture when mouse moves over it. As it happens in other develpment enviroments that one can customized the look 'n feel of any thing during the mouse movement over that very thing. Moreover can any body plz tell me that how one can modify the funtionality of a control by him self (not selecting the available functionalities of controls and indicators)

[tst]

Controls can't change when hovering over them. You can write code using an event structure to detect the mouse enter and mouse leave events and then do something (for example, if it's a picture ring, display a different picture or make another image visible or change the control's color), but you can't change the control itself.
You also can't change the functionality of controls.
Both are probably not the answers you (or I) wanted, but there is nothing really to be done.
A partial answer, involving more coding, is using the picture control to create your interface. You can see more about this here.