TextMesh Pro Turning off mouse control

I'm currently working on a project where I would like to turn off the mouse control to my player while an inventory window is open and return control upon closing the window. What is easiest method to do this?

 

Find the property, field or method that disables the mouse control (here, I am guessing you're talking about some sort of First person camera / control), and then set or call it , making it 'off' Then, a way to restore it when you're done with the inventory.