plug.c

#include <gtk/gtk.h>
#include <gtk/gtkx.h>
#include <stdio.h>

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

static void embedded_cb(GtkWidget *widget, gpointer data)
{
    g_print("Embed event occurred\n");
}

static void entry_activated_cb(GtkWidget *widget, gpointer data)
{
    g_print("Entry activated\n");
}

void load_css()
{
    GtkCssProvider *provider;
    GdkDisplay *display;
    GdkScreen *screen;
    provider = gtk_css_provider_new ();
    display = gdk_display_get_default ();
    screen = gdk_display_get_default_screen (display);
    gtk_style_context_add_provider_for_screen (screen, GTK_STYLE_PROVIDER (provider), GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
    const gchar* filename = "plug.css";
    GError *error = 0;
    gtk_css_provider_load_from_file(provider, g_file_new_for_path(filename), &error);
    g_object_unref (provider);
}

int main(int argc, char *argv[])
{
    gtk_init(&argc, &argv);
    if (argc != 2){
        g_print("Socket Id is needed\n");
        return -1;
    }

    unsigned int socket_id = -1;
    sscanf (argv[1], "%u", &socket_id);

    GtkWidget *plug = gtk_plug_new(socket_id);

    g_signal_connect(plug, "destroy", G_CALLBACK(destroy_cb), NULL);
    g_signal_connect(plug, "embedded", G_CALLBACK(embedded_cb), NULL);

    GtkWidget *entry = gtk_entry_new();
    gtk_entry_set_text(GTK_ENTRY(entry), "Plug and Socket");
    g_signal_connect(entry, "activate", G_CALLBACK(entry_activated_cb), NULL);
    gtk_container_add (GTK_CONTAINER(plug), entry);

    gtk_widget_show_all(plug);

    load_css();
    gtk_main();

    return 0;
}