Do you mean the Scroller Wheel? It that, then I'm not sure. If you mean use the mouse to scroll around... That would be hard.
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Y scrolling
[blocks]
<if><( <mouse y> <>> 170 )>
<change{ y scroll }by( -1
<end>
<if><( <mouse y> <<> -170 )>
<change{ y scroll }by( 1
<end>
[/blocks]
X scrolling
[blocks]
<if><( <mouse x> <>> 230 )>
<change{ x scroll }by( -1
<end>
<if><( <mouse x><<> -230 )>
<change{ y scroll }by( 1
<end>
[/blocks]
This type of scrolling means when the mouse is right near the edge of the screen the sprite will scroll. You an change the numbers to more or less if you like but this is what I would use. Hope this helps you.
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