GtkNotebook::get_tab_label_text
string get_tab_label_text(GtkWidget child);
Returns the text of the tab label, or null if the tab label widget is not a GtkLabel.
同时参考: set_tab_label_text()
Returns the text of the tab label, or null if the tab label widget is not a GtkLabel.
同时参考: set_tab_label_text()