Re: grabbing a spinbutton from a dialog

[Iago Rubio <iago rubio hispalinux es>]

On Fri, 2004-08-13 at 07:07, Rob Benton wrote:
> I know there's probably a better way to do this than what I'm 
> attempting.  I have a New menuitem that I want to create a dialog with 2 
> spinbuttons.  On the response handler the function needs to extract the 
> values from the 2 spinbuttons.  Here's my flow:
>
> Mainmenu->New->create a dialog with 2 spin buttons->signal connect
> response->get dialog vbox->get first hbox->get spinbutton->get value
>                                        +->get second hbox->get 
> spinbutton->get value
>
> So far I've been trying to use the gtk_container_get_children() 
> methods.  Is there a better way to do this?  That seems like a lot of 
> code to get 2 ints.

You can create an structure with the spin buttons and pass it to
callbacks.

typedef struct _MySpins {
        GtkWidget* spin1;
        GtkWidget* spin2;
} MySpinButtons;

MySpinButtons spin_buttons = g_malloc( sizeof(MySpinButtons) );

spin_buttons->spin1 = the_first_spin_button;
spin_buttons->spin2 = the_second_spin_button;

Then pass this to g_signal_connect as user_data, so in the callback you
can catch it.

g_signal_connect( your_widget, "your-signal", your_callback_function,
(gpointer) spin_buttons );

// In the callback
MySpinButtons spin_buttons;

spin_buttons = (MySpinButtons) user_data;

Remember to free the structure when no longer needed ( meaning when you
destroy the dialog ).

g_signal_connect_swapped ( your_dialog, "destroy", g_free,  spin_buttons
);


Hope this helps.
-- 
Iago Rubio   
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