How does Krita use the "canvas zoom" button?

1. After running Krita, click "Settings" at the top to expand the drop-down list, and select "Configure Krita" in the drop-down list

2. In the Configure Krita window, first open the "Keyboard Shortcuts" interface, and then click the triangle arrow in front of "View" to expand the drop-down list, click "Zoom  In", then enter "Ctrl++" in the pop-up custom box, and finally click "OK"

Please note: the "+" in Ctrl++ can only be entered on the left keyboard + (+ automatically becomes = after entry), and cannot be entered on the right keyboard +

3. After the above settings are completed, please be sure to restart Krita