An option button control com.sun.star.awt.UnoControlRadioButton is a simple switch with two states, that is selected by the user. Usually option buttons are used in groups to display several options, that the user may select. While option buttons and check boxes seem to be similar, selecting one option button deselects all the other option buttons in the same group.
Usually a group box, or horizontal and vertical lines are used, because those controls visually group the option buttons together, but in principal this can be any control. There is no functional relationship between an option button and a group box. Option buttons are grouped through consecutive tab indices only.
The state of an option button is accessed by the
State property of its Model, where 0 is not checked and 1 is checked.
Function IsChecked( oOptionButtonModel As Object ) As Boolean Dim bChecked As Boolean If oOptionButtonModel.State = 1 Then bChecked = True Else bChecked = False End If IsChecked = bChecked End Function
The state of an option button is also returned by the
getState() method of the control, where False is not checked and True is checked. The code is greatly simplified:
If oOptionButton.State Then ' The option is checked Else ' The option is not checked End If
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