http://digida.mgpu.ru/index.php?action=history&feed=atom&title=Mouse_Wheel_Scrolling_DetectionMouse Wheel Scrolling Detection - История изменений2026-06-17T14:12:36ZИстория изменений этой страницы в викиMediaWiki 1.44.0http://digida.mgpu.ru/index.php?title=Mouse_Wheel_Scrolling_Detection&diff=1708&oldid=prevPatarakin: 1 версия импортирована2022-07-21T08:33:14Z<p>1 версия импортирована</p>
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</td></tr></table>Patarakinhttp://digida.mgpu.ru/index.php?title=Mouse_Wheel_Scrolling_Detection&diff=1707&oldid=prevscratch>CrazyBoy826: fix link2022-04-13T23:28:01Z<p>fix link</p>
<p><b>Новая страница</b></p><div>{{stub|date=August 2018}}<br />
This tutorial shows how to program '''mouse wheel scrolling detection''' in [[Scratch 1.4]], [[Scratch 2.0|2.0]] and [[Scratch 3.0|3.0]].<br />
<br />
== Script ==<br />
The [[When () Key Pressed (Events block)|when () key pressed]] block fires both when the up and down keys are pressed ''and'' when the mouse wheel is scrolled up or down, while the [[Key () Pressed? (block)|key () pressed?]] block only returns true if the arrow key is being pressed.<br />
<br />
Add these [[script]]s to the project:<br />
<scratchblocks>when [up arrow v] key pressed<br />
if <not <key (up arrow v) pressed?>> then<br />
. . . // scrolling up<br />
end<br />
<br />
when [down arrow v] key pressed<br />
if <not <key (down arrow v) pressed?>> then<br />
. . . // scrolling down<br />
end<br />
</scratchblocks><br />
<br />
==Example Uses==<br />
* Making a webpage in an [[Operating System]]<br />
* Scrolling a menu in a project<br />
<br />
== See Also ==<br />
* [[Key () Pressed? (block)]]<br />
<br />
[[Category:Scripting Tutorials]]<br />
[[Category:Game Design Tutorials]]</div>scratch>CrazyBoy826