Re: [Re: how to get text from combo box]

[Jean-Francois BUTKIEWICZ <jfbutkiewicz nordnet fr>]

alprach wrote:
> hi,
>
> i tried ..... but don't know why it is not working.
>
> this is a gist of my program
>
> GtkWidget *combo;
> GList *list=NULL;
>
> //list-- has a list of items
>
> gtk_signal_connect(GTK_OBJECT(GTK_COMBO(combo)->list),"select-child",
>    GTK_SIGNAL_FUNC(my_callback),NULL);
>
> //my_callback function is like this
>
> void my_callback(GtkWidget *combo)
> {
>  char *string;
> string=gtk_editable_get_chars(GTK_EDITABLE(GTK_COMBO(combo)->entry),0,-1);
> g_print("%s\n",string);
> free(string);
> }
>
> its also giving me warning such as
>
> warning : invalid cast from GtkList  to GtkCombo 
> and many more such warnings
>
> can somebody help me..
>
>
>
> Jeff Shipman <shippy nmt edu> wrote:
> The entry widget of a combo box can be accessed via
> GTK_ENTRY(GT
> K_COMBO(my_combo_box)->entry). Then, you
> can set activate signals on that and you can use
> gtk_editable_get_chars() to get the text. If you want
> to get the text each time something is selected in
> the list, then hook the "select-child" signal up to
> GTK_ENTRY(GTK_COMBO(my_combo_box)->list) and then
> use gtk_editable_get_chars() as before.
>
> Hope this helps. :)
>
> Jeff "Shippy" Shipman     E-Mail: shippy nmt edu
> Computer Science Major    ICQ: 1786493
> New Mexico Institute of Mining and Technology
> Homepage: http://www.nmt.edu/~shippy
>
> On 20 Feb 2001, alprach wrote:
>
> > hi,.
> >
> > i am using a combo box ..from which i need to get the text within it..
> > how do i connect signal to it(i tried using "activate" but didn't work).
> > i am using gtk_get_text_entry in the callback function ...
> >
> >
> > can somebody  help me ...
> >
> > bye,
> >
> >
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>     
Hi,
    
Your warning appears because you give a GtkList to your callback (the "list" member of a GtkCombo is a widget GtkList...)
So your callback must be like this :
    
void my_callback(GtkList *list, GtkWidget *element, gpointer my_data)
{
...
}
    
where element is the newly selected child.
    
regards, JFB