Extra credit: Creating a Closed Captions toggle button

In this Extra Credit section, you will create an additional button next to the Mute button you created in the previous sections and develop a Conditional Advanced Action to turn the Closed Captions on and off. The main difference between this button and the mute button is the System Variable you need to manipulate. In this example, use the cpCmndCC variable to turn the Closed Captions on and off. The general steps of the procedure go as follows:

  • Create a Closed Captions button using the images stored in the Chapter13/images folder. Make sure you create a custom Active state for the button and place it next to the Mute button. Don't forget to give this new button a name in the topmost ...

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