GTK gossip: gtkuimanager

Create a user interface, such as a structure selection or a tool column, by using a programming program, you can use gtkuimanager to define an interface definition from one or more user interfaces and automatically create corresponding GTK components, the user interface defines an XML example. Let's take a look at some practical examples. Gtkmenubar, gtkmenu, and gtkmenuitem In the example, gtkuimanager and XML are used to define the same effect. If the XML definition is as follows: Gtk_ui_manager.xml <ui> <menubar name="MenuBar"> <menu action="File"> <menuitem action="Open"/> <menuitem action="Save"/> <separator/> <menuitem action="Close"/> </menu> <menu action="Edit"> <menuitem action="Cut"/> <menuitem action="Copy"/> <menuitem action="Paste"/> </menu> <menu action="Help"> <menuitem action="About"/> </menu> </menubar> </ui> "Name" features allow you to obtain the corresponding GTK component based on the name when creating the program, and "action" will apply to gtkaction, you can use gtkactionentry to create the gtkaction. The definition of gtkactionentry is as follows: Typedef struct { Const gchar * Name; Const gchar * stock_id; Const gchar * label; Const gchar * accelerator; Const gchar * tooltip; Gcallback callback; } Gtkactionentry; The first name operator defines the "name" encoding in the response. The others are the representation, text, quick response, prompt, and callback function, a preset is as follows: Static gtkactionentry entries [] = { {"File", null, "_ file "}, {"Open", gtk_stock_open, "open ", "<Control> O", "Open File", g_callback (itempressed )}, {"Save", gtk_stock_save, "save ", "<Control> S", "save file", g_callback (itempressed )}, {"Close", gtk_stock_quit, "close ", "<Control> q", "Close file", g_callback (gtk_main_quit )}, {"Edit", null, "_ edit "}, {"Cut", null, "copy "}, {"Copy", null, "copy "}, {"Paste", null, "Paste "}, {"Help", null, "_ Help "}, {"About", null, "about "} }; Gtkaction is grouped into gtkactiongrouop. After defining the gtkactionentry, you can use the gtk_action_group_add_actions () function to add it to the gtkactiongroup: Gtk_action_group_add_actions (Actiongroup, entries, 10, null ); Create the gtkuimanager and use Add gtk_ui_manager_insert_action_group () to the gtkactiongroup, and then use Gtk_ui_manager_add_ui_from_file () define the definition of the user interface: Gtkuimanager * UI = gtk_ui_manager_new (); Gtk_ui_manager_insert_action_group (ui, Actiongroup, 0 ); Gtk_ui_manager_add_ui_from_file (ui, "gtk_ui_manager.xml", null ); Gtkuimanager automatically creates the GTK component corresponding to the structure and creates the corresponding gtkaction according to the action. To retrieve components from gtkuimanager, you can use gtk_ui_manager_get_widget () and set it according to the "name" identifier. For example, you can get "menubar" and add it to gtkvbox: Gtkwidget * vbox = gtk_vbox_new (false, 5 ); Gtk_box_pack_start (gtk_box (vbox ), Gtk_ui_manager_get_widget (ui, "/menubar"), false, false, 2 ); The following program is a complete example: Gtk_ui_manager_demo.c #include <gtk/gtk.h> void itemPressed(GtkMenuItem *menuItem, gpointer data) { g_print("%s/n", gtk_action_get_name(GTK_ACTION(menuItem))); } static GtkActionEntry entries[] = { { "File", NULL, "_File" }, { "Open", GTK_STOCK_OPEN, "Open", "<control>O", "Open File", G_CALLBACK(itemPressed)}, { "Save", GTK_STOCK_SAVE, "Save", "<control>S", "Save File", G_CALLBACK(itemPressed)}, { "Close", GTK_STOCK_QUIT, "Close", "<control>Q", "Close File", G_CALLBACK(gtk_main_quit)}, { "Edit", NULL, "_Edit" }, { "Cut", NULL, "Copy"}, { "Copy", NULL, "Copy"}, { "Paste", NULL, "Paste"}, { "Help", NULL, "_Help" }, { "About", NULL, "About" } }; int main(int argc, char *argv[]) { GtkWidget *window; GtkActionGroup *actionGroup; GtkUIManager *ui; GtkWidget *vbox; gtk_init(&argc, &argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_window_set_title(GTK_WINDOW(window), "GtkUIManager"); gtk_window_set_default_size(GTK_WINDOW(window), 300, 200); actionGroup = gtk_action_group_new("Actions"); gtk_action_group_add_actions(actionGroup, entries, 10, NULL); ui = gtk_ui_manager_new(); gtk_ui_manager_insert_action_group(ui, actionGroup, 0); gtk_ui_manager_add_ui_from_file(ui, "gtk_ui_manager.xml", NULL); vbox = gtk_vbox_new(FALSE, 5); gtk_box_pack_start(GTK_BOX(vbox), gtk_ui_manager_get_widget(ui, "/MenuBar"), FALSE, FALSE, 2); gtk_container_add(GTK_CONTAINER(window), vbox); g_signal_connect(GTK_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL); gtk_widget_show_all(window); gtk_main(); return 0; } The following figure shows the details of a line: For more information, refer to the gtkuimanager documentation. Or the UI manager example in GTK-demo.

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