RE: [gtkmm] Gtk::Combo get_list()->children().clear() howto?

[Murray Cumming Comneon com]

http://bugzilla.gnome.org/show_bug.cgi?id=110206

Murray Cumming
murrayc usa net
www.murrayc.com 

> -----Original Message-----
> From: Jeff Gavin [mailto:jeff ezclick net] 
> Sent: Dienstag, 3. Juni 2003 03:15
> To: gtkmm-list gnome org
> Subject: [gtkmm] Gtk::Combo get_list()->children().clear() howto?
> 
> 
> I am using a combo box as a search entry.  As the user types into the 
> combo box, a database lookup happens, and the top match is 
> displayed in 
> the entry.   If the user clicks on the drop-down button, a list of 
> matching entries is displayed.  Just like your mozilla 
> browser does when 
> you type on the address line.
> 
> I can populate the combo box on the first search, but CANNOT 
> figure out 
> how to delete and repopulate the combo box on subsequent searches.
> 
> I have tried:
> 
> 	combo->get_list()->children().clear();
> 
> but this crashes.  It's not clear to me that this is a bug, 
> or I don't 
> know how to program it correctly.  The debugger says:
> 
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 1086466976 (LWP 15014)]
> 0x4012322f in 
> Gtk::ComboDropDown_Helpers::ComboDropDownList::erase(Glib::Lis
> t_Iterator<Gtk::ComboDropDownItem>) 
> (this=0x827f2b8, 
> position={<List_Iterator_Base<Gtk::ComboDropDownItem>> 
> = {<No data fields>}, head_ = 0x829c804, node_ = 0x82a4e9c}) at 
> combo.h:105 in combo.h
> 
> How do you manage (delete and add) the items in a dynamic 
> combo box like 
> this?  Is it possible?  Certainly someone out there does this.
> 
> I have read the list archives and discovered that MANY people 
> have had 
> this problem in the past, but I cannot find any message that posts a 
> solution, workaround or an example.  All of the examples that 
> I can find 
> for Gtk::Combo are static combo boxes.
> 
> It would be nice if one could simply myCombo->clear(); and 
> get a fresh 
> empty combo box to repopulate, but I cannot make this happen. 
>  Any help 
> would be great!
> 
> If and when I get this working, I will update the combo 
> example to show 
> future gtkmm programmers how to do this.
> 
> Thanks,
> 
> Jeffrey S. Gavin
> 
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