Re: Glade 2 & passing data to signal handlers

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Joe Scaduto wrote:
On Sat, 2003-10-18 at 11:24, Russell Shaw wrote:


Yes, but it will be over-written next time you generate the code.
Most users don't use this generated code and use gladelib xml which
is less intrusive on your program.


Thanks I appreciate the help.....I found what the problem was at least
I think. When Glade created the
g_signal_connect_swapped((gpointer) okLoginButton, "clicked",
G_CALLBACK (on_okLoginButton_clicked),
GTK_OBJECT (loginDialog) ); connection the first parameter of on_okLoginButton_clicked is
loginDialog not okLoginButton. Which would make my callback function:


void on_okLoginButton_clicked(gpointer user_data, GtkButton *button)
{
}

not(which Glade had orginally created for me):

void on_okLoginButton_clicked(GtkButton *button, gpointer user_data)
{
}

Correct me if I am wrong but I think the difference between
g_signal_connect and g_signal_connect_swapped is the order the
parameters are recieve by your callback function.

Yes. The connect functions are usually macros involving g_signal_connect_object():


#define     g_signal_connect                (instance, detailed_signal, c_handler, data)
#define     g_signal_connect_after          (instance, detailed_signal, c_handler, data)
#define     g_signal_connect_swapped        (instance, detailed_signal, c_handler, data)
gulong      g_signal_connect_object         (gpointer instance,
                                             const gchar *detailed_signal,
                                             GCallback c_handler,
                                             gpointer gobject,
                                             GConnectFlags connect_flags);

http://developer.gnome.org/doc/API/2.0/gobject/gobject-Signals.html

Some theory: http://www.gtk.org/tutorial/sec-theoryofsignalsandcallbacks.html

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