[gtkmm] Re: [gtkmm] RadioElem Signal

[Andreas Holzmann <Andreas Holzmann epost de>]

>How to select the right one ?
>Working with something like flags or semaphore in the callback ?

The radio button itself provides the flag. Its the get_active()
method. You can check it in your signal handler. If it returns
true the button has been selected. If it returns false the
button has been unselected.

You have to get the widget from the toolbar. RadioElem is just
a helper to build the button.

e.g. m_Toolbar.tools()[1].get_widget()->get_active()
or you store the the widget in a class-member right after creating
it
e.g. m_VertexButton = m_toolbar.tools().back ().get_widget();
     m_VertexButton->get_active() (in your callback)

 Andreas



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