Use a RadioControl with a custom look. You can add an image into the control making it clickable. Take a look at the XML for Screenshot Sender 4 (WndPref.xml). You will see what I am refering to.
code:
<Control xsi:type="RadioControl" Id="RadGeneral">
<Position Top="0" Width="96" Left="0" Height="17"/>
<Attributes><IsNewGroup>false</IsNewGroup></Attributes>
<CustomLook>
<FocusRect><Left>1</Left><Top>1</Top><Right>1</Right><Bottom>1</Bottom></FocusRect>
<Base/>
<Normal>
<Checked>
<Element xsi:type="ImageElement" Id="ImgArrow">
<Position Top="0" Left="0"/>
<Image><Name>myimage</Name></Image>
</Element>
</Checked>
</Normal>
</CustomLook>
</Control>
Here is a small example.