Radio Buttons

Radio Buttons

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Radio buttons are used for mutually exclusive settings. Clicking on one causes any other that has been pressed to pop up, just like on an old car radio. The button with the dot in the middle is the one that has been selected. Sometimes you'll see more than one group of buttons, with a separate outline around each group. In this case, you can select one radio button from each group. Functionally, a group of radio buttons works like a standard listbox (see Figure 3-20).

Figure 3-22. Two radio buttons are used to allow you to choose only one of the available Start menu styles

Navigating radio buttons with the keyboard can be confusing. When using the Tab key to jump between controls, Windows considers a group of radio buttons to be a single control. When the Tab key places the focus on a single radio button, you'll need to use the arrow keys to select a different one; otherwise , another press of the Tab key will jump to a different control, seemingly skipping a whole bunch of radio buttons.