You can activate/deactivate mouse input; for example, if you only want to input notes using your computer keyboard or MIDI device. Deactivating mouse input also allows you to click other items to stop note input.
Procedure
In Write mode, in the Notes toolbox, activate/deactivate Select
.
Result
Mouse input is activated in the current project when Select is deactivated. Mouse input is deactivated in the current project when Select is activated.
Tip
You can change the default setting for whether mouse input is activated/deactivated by activating/deactivating Enable note input using the mouse on the Note Input and Editing page in Preferences.