Modifier Key | Mouse Action | Result if over piece(s)Result if over air |
None | Left Button Click | Select single piece | Cancel selection |
None | Left Button Drag | Drag piece(s) | Select multiple pieces by dragging selection box |
None | Right Button Click | Activate drag-to-scroll | Activate drag-to-scroll |
None | Right Button Drag | Drag-to-scroll | Drag-to-scroll |
None | Wheel Up | Zoom In | Zoom In |
None | Wheel Down | Zoom Out | Zoom Out |
None | Wheel Click | Remove piece(s) from selection | Nothing |
Ctrl | Left Button Click | Add/remove piece to/from current selection | Nothing |
Ctrl | Left Button Drag | Select multiple pieces by dragging selection box | Select multiple pieces by dragging selection box |
Shift | Left Button Click | Select/deselect single piece | Cancel selection |
Alt | Left Button Click | Invert selection priority | Cancel selection |
Ctrl + Shift | Left Button Drag | Drag pre-selected pieces vertically | Select multiple pieces by dragging selection box |
Ctrl + Alt | Left Button Drag | Drag pre-selected pieces horizontally | Select multiple pieces by dragging selection box |