#include <gtk/gtk.h>

/**
 * gtk示例代码:gtk_combo_box_entry 带下拉的输入框
 * Author: emptyhua@gmail.com
 * BSD license
 * compile: gcc -Wall `pkg-config --libs --cflags gtk+-2.0 ` combo_box_entry.c -o combo_box_entry
 */

static void destroy( GtkWidget *widget,
                     gpointer   data )
{
    gtk_main_quit ();
}

static void button_click_cb( GtkWidget *widget,
                     gpointer   data )
{
    GtkWidget *comb = (GtkWidget *) data;
    gchar *v = gtk_combo_box_get_active_text(comb);
    g_printf("get value:%s\n", v);
    g_free(v);
}

int main(int argc,char *argv[])
{
    GtkWidget *window;
    GtkWidget *vbox;
    GtkWidget *widget;
    GtkWidget *button;

    gtk_init (&argc, &argv);
    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    g_signal_connect (window, "destroy",
		      G_CALLBACK (destroy), NULL);
    gtk_container_set_border_width (GTK_CONTAINER (window), 10);

    vbox = gtk_vbox_new(FALSE, 0);
    gtk_container_add (GTK_CONTAINER (window), vbox);

    widget = gtk_combo_box_entry_new_text ();
    gtk_combo_box_append_text(widget , "option 1"),
    gtk_combo_box_append_text(widget , "option 2"),
    gtk_combo_box_append_text(widget , "option 3"),
    gtk_box_pack_start(GTK_BOX(vbox), widget, TRUE, TRUE, 0);

    button = gtk_button_new_with_label("OK");
    g_signal_connect (button, "clicked",
		      G_CALLBACK (button_click_cb), widget);
    gtk_box_pack_start(GTK_BOX(vbox), button, TRUE, TRUE, 0);

    gtk_widget_show_all(window);
    gtk_main ();
    return 0;
}