gtkmm combobox problem

sickboy · 2005-03-26 21:38:29

This is driving me nuts !

I am trying to figure out how you get the text from the selection of a combobox (note: not combo entry box)

I have populated the combobox Ok by attaching a liststore to it :

    // set up model for combo box
    m_refComboModel = Gtk::ListStore::create(m_Combo);
    viewComboBox->set_model(m_refComboModel);
    viewComboBox->pack_start(m_Combo.view_col);    
    
    // Set the 3 default values for the combobox
    Gtk::TreeModel::Row row = *(m_refComboModel->append());
    row[m_Combo.view_col] = "item 1";
    
    row = *(m_refComboModel->append());
    row[m_Combo.view_col] = "item 2";
    
    row = *(m_refComboModel->append());
    row[m_Combo.view_col] = "item 3";

I have a signal that is generated if the user make a selection from the combobox in the following function :

//---------------------------------------------
// User has selcted new positon in combo box
//--------------------------------------------
void window1::on_viewComboBox_changed()
{
    // get the current selection from the combobox
    // to do ........................................................
    TreeModel::iterator i = viewComboBox->get_active();
}

tried variuos ways but I can not figure out how to get the item selected.

get_active always returns 1.

Can anybody show me the light (preferably with an example)

phrakture · 2005-03-26 21:51:50

i think you want to use:

Gtk::TreeIter it;
viewComboBox->get_active_iter(it);

sickboy · 2005-03-26 22:01:33

No the combobox does not have a get_active_iter method - so this just gives a compile error.

but thanks for the quick reply

phrakture · 2005-03-26 22:43:18

ah... it's been a while since I touched the gtkmm stuff... I actually thing the *iter methods were before gtkmm was known as gtkmm... I'm not really sure

zeppelin · 2005-03-28 11:27:32

PyGTK says:
gtk.ComboBox.get_active_text

def get_active_text()

Returns : The currently active text.
Note

This method is available in PyGTK 2.6 and above.

The get_active_text() method returns the currently active string or None if no entry is selected. Note that you can only use this function with combo boxes constructed with the gtk.combo_box_new_text() function.

so either wait for GTKmm to wrap the GTK 2.6 or switch to Python or maybe use
get_active_row_number ?

but does on_viewComboBox_changed() get executed?
if you get the iter, do you get the value in the iter?
Good Luck, if you want write a small executable code to reproduce your pb so we can help better

sickboy · 2005-03-29 21:30:19

Ahhh I can use the specialized class ComboBoxText then I can use the get_active_text method. You can't seem to insert his widget using Glade so I did not realize this at first.

Arch Linux

#1 2005-03-26 21:38:29

gtkmm combobox problem

#2 2005-03-26 21:51:50

Re: gtkmm combobox problem

#3 2005-03-26 22:01:33

Re: gtkmm combobox problem

#4 2005-03-26 22:43:18

Re: gtkmm combobox problem

#5 2005-03-28 11:27:32

Re: gtkmm combobox problem

#6 2005-03-29 21:30:19

Re: gtkmm combobox problem

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