Hello everyone,
I hope this is the proper place to post this! I am developing a graphical
front-end for a
diagnostics panel for an autonomous vehicle. I am fairly new to C++ and GTK.
I've
searched all over for the solution but maybe I'm looking for the wrong
things.
I cobbled together the widgets using Glade-2. I have a GtkTable that lays
out all the needed
widgets in a grid. Now I am working in callbacks.c and need to be able to
alter a label when
a toggle button is pressed.
I have gotten fairly far but am now stuck:
//Callback function, the stub of which was automatically generated by
Glade-2
//It is called when ever the toggle button "enable" is clicked.
//This event is called when you press the enable/disable toggle button for
the estop.
void on_toggletoolbutton_enable_toggled( GtkToggleToolButton
*toggletoolbutton, gpointer user_data )
{
//Getting the parent of the toggle button, my table
GtkTable *parent = (GtkTable*) gtk_widget_get_parent( (GtkWidget*)
toggletoolbutton);
//Getting the list of children widgets from the table. I checked and it has
the correct number of children.
GList *children = g_list_first(parent->children);
//Iterate through and print the name of each child widget
while (children)
{
//Get the first widget from the list
GtkWidget *test = (GtkWidget*) (g_list_first(children)->data);
//Print the name of this widget
g_print(gtk_widget_get_name (test));
//Knock the first widget off of the list
children = g_list_next(children);
}
This code does not work. I get the following errors 16 times (the number of
children in my table):
(dash:10933): Gtk-CRITICAL **: gtk_widget_get_name: assertion `GTK_IS_WIDGET
(widget)' failed
(dash:10933): GLib-CRITICAL **: g_print: assertion `format != NULL' failed
What am I doing wrong? If anyone could help me it would be greatly
appreciated. I have been fighting with this all day.
- Craig
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