"Freeze" the slider

Is it possible to "freeze" the slider (NSSlider)? I'd like to make my slider unmovable (with a fixed value) when I press the button "Sta开发者_开发知识库rt", which starts my application... And when I press the button "Stop", which terminates my apllication, I'd like the slider to become movable again.

Thanks for the answer!

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Just use the enabled property:

yourSlider.enabled = NO; // this will "freeze"
yourSlider.enabled = YES; // this will "unfreeze"