Hello everyone,
Just thought I'd share a solution to a problem that was bugging me. I'll
bet many of you already know about this, or know of a better way, but
hopefully somebody can use this:
In this program I'm writing, I have three buttons that are very similar
in function, they just work on a different set of data. Instead of
creating three different callbacks, I just use the data parameter of the
callback to differentiate between the three buttons. It's probably
easiest to demonstrate with an example:
void printFunction (GtkWidget* widget, gpointer data)
{
printf("The value passed in the callback is: %s\n", (gchar*) data);
}
GtkWidget* buttonA = gtk_button_new("Button A");
GtkWidget* buttonB = gtk_button_new("Button B");
GtkWidget* buttonC = gtk_button_new("Button C");
g_signal_connect(G_OBJECT(buttonA), "clicked",
G_CALLBACK(printFunction), "buttonA");
g_signal_connect(G_OBJECT(buttonB), "clicked",
G_CALLBACK(printFunction), "buttonB");
g_signal_connect(G_OBJECT(buttonC), "clicked",
G_CALLBACK(printFunction), "buttonC");
Hope this helps somebody, and sorry for wasting the other's time.
--Matthew
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