Question is in the title. I have a mouse with extra buttons and would like to bind the button so that it sends continous left clicks when I hold it down.
What mouse brand? Some mouse brands provide macro software to individuals for games mostly.
Logitech Macro Software(G-SERIES ONLY):
Razer Macro Software:
The ones I've used are those and they allow you if you have one of their products at bind, change and macro at ease.
THERE IS ALSO KEYBOARD MAESTRO, don't need any exclusive product(never used this before, use at your own risk):