RE: GtkMenu question

[Julien Bramary <julien_bramary@xxxxxxx>]

It works!

This is very clever, nice one Artur! I wouldn't have come up with this on my own.

For the reference a stripped down sample code provided below for a choice of 2 options:

static void choose_handler(void*, gpointer);
static gboolean idle_chooser(gpointer);
static void choose_deactivate_handler(void*, gpointer);
static void choose_handler(void*, gpointer);

enum {
    FIRST_CHOICE = 1,
    SECOND_CHOICE,
};

static gboolean has_chosen;

void popup_chooser(void) {

    has_chosen = FALSE;

    GtkWidget *popup = = gtk_menu_new();
    GtkWidget *first_choice = gtk_menu_item_new_with_mnemonic("_First choice");
    GtkWidget *second_choice = gtk_menu_item_new_with_mnemonic("_Second choice");

    // Connect the signals as normal:
    g_signal_connect (GTK_OBJECT (first_choice),     "activate", G_CALLBACK (choose_handler), GINT_TO_POINTER(FIRST_CHOICE));
    g_signal_connect (GTK_OBJECT (second_choice), "activate", G_CALLBACK (choose_handler), GINT_TO_POINTER(SECOND_CHOICE));

    // Add a special handler on the menu for "deactivate":
    g_signal_connect (GTK_OBJECT (choose_popup), "deactivate", G_CALLBACK (choose_deactivate_handler), NULL);

    gtk_widget_show (first_choice);
    gtk_widget_show (second_choice);

    gtk_menu_attach( GTK_MENU(popup), first_choice, 0, 1, 0, 1);
    gtk_menu_attach( GTK_MENU(popup), first_choice, 0, 1, 1, 2);

    gtk_menu_popup ( GTK_MENU(popup), NULL, NULL, NULL, NULL, 0, gtk_get_current_event_time());
}

// Define the handlers
static gboolean idle_chooser(gpointer trash) {
    if ( ! has_chosen) {
        printf("User has NOT chosen!\n");
        // now make a choice [...]
    }
    else {
        printf("User chose\n");
    }
    return FALSE;
}

static void choose_deactivate_handler(void *GtkWidget, gpointer value) {
    g_idle_add(idle_chooser, NULL);
}

static void choose_handler(void *GtkWidget, gpointer value) {
    has_chosen = TRUE;
}

Thanks a ton Artur!
Julien

From: artur-pub@xxxxxxxxx
To: julien_bramary@xxxxxxx
CC: gtk-list@xxxxxxxxx
Subject: Re: GtkMenu question
Date: Sun, 13 Dec 2009 22:20:28 +0300

13.12.09, 22:12, "Artur Galyamov" <artur-pub@xxxxxxxxx>:

same iteration of main loop -- if so, you can play with g_idle_add() to set final value:

before popup -> set default value to tmp

on optional activate -> set activated value to tmp

... (iteration ends)
on high-priority idle -> set final value from tmp

Sorry.. forgot it: set idle callback at "hide" emission.

-- 
Artur 		 	   		  
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