What it checks
- Left, middle and right buttons, plus back and forward side buttons where the mouse has them. A button turns solid while it is held and keeps a click counter.
- Double click, shown when two left clicks land within 500 ms.
- Scroll wheel direction and distance, with a running total. Scrolling inside the area does not scroll the page.
Worked example
Click the left button twice quickly: the Left counter shows 2 and the Double click box lights. Scroll the wheel one notch down: a typical mouse reports about 100 px, shown as “Down 100 px”.
Tips
- Side buttons. If they do not respond, the mouse driver may use them for other actions.
- Checking for a failing switch. Click slowly and make sure the counter goes up by one each time.
- Trackpads send the wheel events too, in smaller steps.