Projects/Usability/HIG/Toggle Buttons

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Purpose

Toggle buttons look similar to regular buttons, but are used to show or change a state rather than initiate an action. A toggle button's two states, set and unset, are shown by its appearing "pushed in" or "popped out" respectively.

Toggle buttons are a valid option to indicate a state with the advance of using an icon. Compared to the related radio button or check box they are an efficient way to save screen space. But toggle buttons should be used with care outside a toolbar because the state is not clearly indicated.

Example

Guidelines

Is this the right control

Behavior

  • Group toggle buttons in case of multiple selection.
  • Separate toggle buttons from other controls, so they are not mistaken for push buttons.
  • Do not use a toggle button to initiate an action.
  • Do not change the label according the button state.

Appearance

  • Align groups of toggle buttons horizontally rather than vertically.
  • Provide an access key in the label of all toggle buttons that allows the user to set or unset the button directly from the keyboard.

Implementation

[1] for generic buttons. [2] is used to generate buttons in toolbars.


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