[Gtk programming]Teach you to create check menu item, radio menu item

Question

This article will teach you how to create pop-up menu, sub menu, check menu item, radio menu item, separator menu item, and make a menu item grayed by GTK. the reason for I write this article is I did not found any document about pop-up menu, check menu item, radio menu item in GTK 2.0 reference manual. I hope the article will be useful for you.Thank you for viewing.I will be so sorry if my bad English writting confused you.

In order to create a menu, please call the gtk_menu_new() function;this function returns a pointer to a menu widget.

GtkWidget *gtk_menu_new( void );

Answer 1

这篇文章将教你如何用GTK创建弹出菜单，子菜单，复选菜单项，单选菜单项，分隔菜单项，以及如何让一个菜单项变灰。我在GTK 2.0参考手册上没有找到关于弹出菜单项，复选菜单项，单选菜单项的文档，所以就写了这篇文章。希望对大家有用，谢谢看贴。我的英文写作能力很差，希望不要把你们搞晕了。

    要创建一个菜单，请调用gtk_menu_new() 函数，这个函数返回一个指向菜单构件的指针。

GtkWidget *gtk_menu_new( void );

Answer 2

编译用

gcc RadioMenuItem.c GtkMenu.c `pkg-config --cflags --libs gtk+-2.0`

Answer 3

#include "GtkMenu.h" /* * Function:on_button_press_event * Description: call back funtion of the button press event * Returns: TRUE if the mouse right button be clicked, otherwise, retuns FALSE */ gboolean on_button_press_event(GtkWidget *widget, GdkEventButton *event) {     if (event-> button ==3)     {         gtk_menu_popup (GTK_MENU(CreatePopupMenu()), NULL, NULL, NULL, NULL, event->button, event->time);         return TRUE;     }     return FALSE; } int main( int   argc, char *argv[] ) {     GtkWidget *window;     GtkWidget *button;     GtkWidget *menu_items;     gtk_init (&argc, &argv);     /* create a new window */     window = gtk_window_new (GTK_WINDOW_TOPLEVEL);     gtk_window_set_title (GTK_WINDOW (window), "GTK Radio Menu Item Test");     gtk_widget_set_usize(GTK_WIDGET(window), 300, 300);     g_signal_connect (G_OBJECT (window), "delete_event", G_CALLBACK (gtk_main_quit), NULL);         /* create a button*/     button = gtk_button_new_with_label( "right click here to display the pop-up menu" );     g_signal_connect (G_OBJECT (button), "button_press_event",G_CALLBACK (on_button_press_event), NULL);         gtk_container_add(GTK_CONTAINER(window), button);                 /* display the window */     gtk_widget_show_all (window);     gtk_main ();     return 0; }

Answer 4

#include "GtkMenu.h" #include <stdio.h> void on_left_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Leftn"); } void on_top_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Topn"); } void on_right_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Rightn"); } void on_bottom_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Bottomn"); } void on_toolbar_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Toolbarn"); } void on_statusbar_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Statusbarn"); } void on_normal_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Normal menuitemn"); } void on_normal_menuitem2_active(GtkMenuItem *menuitem, gpointer data) {     printf("Normal menuitem2n"); } void on_high_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Highn"); } void on_middle_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("middlen"); } void on_low_menuitem_active(GtkMenuItem *menuitem, gpointer data) {     printf("Lown"); } void on_popup_menuitem_active(GtkMenuItem *menuitem, gpointer data) { } /* * Function: CreateMenuItem * Description: the function create a normal menu item * Parameters:menuitemtext[in] menu text to display                              func [in] call back function of the menu item * Returns: a pointer to a menu item widget */         GtkWidget* CreateMenuItem(gchar* menuitemtext, GCallback func) {     GtkWidget *menuitem = gtk_menu_item_new_with_label (menuitemtext);     g_signal_connect( menuitem, "activate", G_CALLBACK(func), NULL);     return menuitem; } /* * Function: CreateRadioMenuItem * Description: the function create a radio menu item * Parameters:group[in] the radio menu item will be created will append to this group                              menuitemtext[in] menu text to display                              func [in] call back function of the menu item * Returns: a pointer to a radio menu item widget */         GtkWidget* CreateRadioMenuItem(GSList* group, gchar* menuitemtext, GCallback func) {     GtkWidget *menuitem = gtk_radio_menu_item_new_with_label (group, menuitemtext);     g_signal_connect( menuitem, "activate", G_CALLBACK(func), NULL);     return menuitem; } /* * Function: CreateSeparatorMenuItem * Description: the function create a separator menu item * Parameters:none * Returns: a pointer to a separator menu item widget */         GtkWidget* CreateSeparatorMenuItem() {     return gtk_separator_menu_item_new(); } /* * Function: CreateCheckMenuItem * Description: the function create a check menu item * Parameters:menuitemtext[in] menu text to display; func [in] call back function of the menu item;  checked[in] which takes a TRUE or FALSE value and decide to check or uncheck the menu item * Returns: a pointer to a check menu item widget */                     GtkWidget* CreateCheckMenuItem(gchar* menuitemtext, GCallback func, gboolean checked) {     GtkWidget* menuitem = gtk_check_menu_item_new_with_label (menuitemtext);     g_signal_connect( menuitem, "activate", G_CALLBACK(func), NULL);     gtk_check_menu_item_set_active((GtkCheckMenuItem *)menuitem, checked);     return menuitem; } /* * Function: CreateSubMenu * Description: the function create a submenu * Parameter:none * Returns: a pointer to a menu widget */ GtkWidget* CreateSubMenu() {   GtkWidget* menu = gtk_menu_new ();   GtkWidget* menu_item = CreateRadioMenuItem(NULL, "High", GTK_SIGNAL_FUNC(on_high_menuitem_active));   GtkWidget* normal_menu_item;   GSList* group = gtk_radio_menu_item_get_group((GtkRadioMenuItem *)menu_item);   gtk_menu_shell_append (GTK_MENU_SHELL(menu), menu_item);   gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateRadioMenuItem(group, "Middle", GTK_SIGNAL_FUNC(on_middle_menuitem_active)));   gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateRadioMenuItem(group, "Low", GTK_SIGNAL_FUNC(on_low_menuitem_active)));   gtk_widget_show_all(menu);   return menu; } /* * Function: CreatePopupMenu * Description: the function create a pop-up menu * Parameter:none * Returns: a pointer to a menu widget */ GtkWidget* CreatePopupMenu() {     /* create a menu */     GtkWidget* menu = gtk_menu_new ();   GtkWidget* menu_item = CreateRadioMenuItem(NULL, "Left", GTK_SIGNAL_FUNC(on_left_menuitem_active));   GtkWidget* normal_menu_item;   GtkWidget* popmenuitem;   /* append radio menu items to the menu */   GSList* group = gtk_radio_menu_item_get_group((GtkRadioMenuItem *)menu_item);   gtk_menu_shell_append (GTK_MENU_SHELL(menu), menu_item);   gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateRadioMenuItem(group, "Top", GTK_SIGNAL_FUNC(on_top_menuitem_active)));   gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateRadioMenuItem(group, "Right", GTK_SIGNAL_FUNC(on_right_menuitem_active)));   gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateRadioMenuItem(group, "Bottom", GTK_SIGNAL_FUNC(on_bottom_menuitem_active)));      /* append separator menu item to the menu */   gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateSeparatorMenuItem());      /* append check menu items to the menu */     gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateCheckMenuItem("Toolbar", GTK_SIGNAL_FUNC(on_toolbar_menuitem_active), TRUE));     gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateCheckMenuItem("Statusbar", GTK_SIGNAL_FUNC(on_statusbar_menuitem_active), FALSE));   gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateSeparatorMenuItem());      /* append normal menu items to the menu */   normal_menu_item = CreateMenuItem("Normal menuitem", GTK_SIGNAL_FUNC(on_normal_menuitem_active));   gtk_menu_shell_append (GTK_MENU_SHELL(menu), normal_menu_item);      /* disable a normal menu item */   gtk_widget_set_sensitive(GTK_WIDGET(normal_menu_item), FALSE);      gtk_menu_shell_append (GTK_MENU_SHELL(menu), CreateMenuItem("Normal menuitem2", GTK_SIGNAL_FUNC(on_normal_menuitem2_active)));      /* create a submenu and append to a menu item */   popmenuitem = CreateMenuItem("Popup", GTK_SIGNAL_FUNC(on_popup_menuitem_active));   gtk_menu_shell_append (GTK_MENU_SHELL(menu), popmenuitem);   gtk_menu_item_set_submenu((GtkMenuItem *)popmenuitem, CreateSubMenu());      gtk_widget_show_all(menu);   return menu; }

Answer 5

#ifndef __GTKMENU_H__ #define __GTKMENU_H__ #include <gtk/gtk.h> void on_left_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_top_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_right_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_bottom_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_toolbar_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_statusbar_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_normal_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_normal_menuitem2_active(GtkMenuItem *menuitem, gpointer data); void on_high_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_middle_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_low_menuitem_active(GtkMenuItem *menuitem, gpointer data); void on_popup_menuitem_active(GtkMenuItem *menuitem, gpointer data);    GtkWidget* CreateMenuItem(gchar* menuitemtext, GCallback func); GtkWidget* CreateRadioMenuItem(GSList* group, gchar* menuitemtext, GCallback func); GtkWidget* CreateSeparatorMenuItem();    GtkWidget* CreateCheckMenuItem(gchar* menuitemtext, GCallback func, gboolean checked); GtkWidget* CreateSubMenu(); GtkWidget* CreatePopupMenu(); #endif