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Here is the area where GtkAssistant and GnomeDruid differ the most. While GnomeDruid used the "next" and "back" signals from the GnomeDruidPage, GtkAssistant uses the following techniques:
gtk_assistant_set_forward_page_func(): Allows to define a GtkAssistantPageFunc to let the
assistant know which will be the following page given the current page.
gtk_assistant_set_page_complete(): Lets the assistant know whether the specified page is complete
or not, updating buttons state accordingly.
gtk_assistant_set_page_type(): Lets the assistant know the page role and update the buttons
state accordingly. Pages can have the following roles:
| Intro |
| Content |
| Progress |
| Confirmation |
| Summary |
A sample GtkAssistantPageFunc could look like this:
static gint
forward_page_function (gint current_page,
gpointer data)
{
switch (current_page)
{
case 0:
return 1;
case 1:
if (check_page1_data ())
return 2;
else
return 3;
case 2:
return 3;
default:
return -1;
}
}