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In my program, there are several buttons that allows users to choose. I want to make an effect that when the users choose a button, then the button will be dimmed in order to classify that it is chosen. How it can be done? Thank you so much for your help!
There is no brightness setting, but you can use alpha which is the visibility. 1 is visible and 0 is invisible. So do:
You can set any value between 0 and 1 so just play around with the numbers to find the best value.