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copied!<p>Your code has several issues:</p> <ul> <li><p>You didn't add your vbox to your window. That can be done with the following code: <code>gtk_container_add (GTK_CONTAINER (window), vboxgeneral);</code></p></li> <li><p>You were passing the wrong parameter (the table widget) to your time_handler function. In that function, you created a new table losing the previous one which you packed into a vbox. What you can do is destroy the previous table and create a new one with the new labels and pack it into the vbox. </p></li> <li><p>The call time_handler(table) made in your main function is completely unnecesary. The timer already does that for you.</p></li> </ul> <p>The revised code I made (a working code which does what you asked) as follows:</p> <pre><code>#include <stdlib.h> #include <gtk/gtk.h> static gboolean time_handler(GtkWidget *table); gboolean launched; int main( int argc, char *argv[]) { GtkWidget *window; GtkWidget *vboxgeneral; gchar *title; gtk_init(&argc, &argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); title = "Test GtkTable"; gtk_window_set_title(GTK_WINDOW(window), title); gtk_window_set_default_size(GTK_WINDOW(window), 200, 100); gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER); /* ADDING GTKHBOX TO MAIN WINDOW */ vboxgeneral = gtk_vbox_new(FALSE, 0); /* This step was missing! */ gtk_container_add (GTK_CONTAINER (window), vboxgeneral); gtk_widget_show_all(window); g_signal_connect_swapped(G_OBJECT(window), "destroy", G_CALLBACK(gtk_main_quit), NULL); /* START TIMER */ /* refresh in 1 second, change to the desired amount */ g_timeout_add(1000, (GSourceFunc) time_handler, (gpointer) vboxgeneral); gtk_main(); return 0; } static gboolean time_handler(GtkWidget *vbox) { GtkWidget *widget; static GtkWidget *table = NULL; gboolean result = FALSE; /* if you want only the new labels to appear and not the previous ones you can: */ /* 1. destroy the table and create a new one. This will be done */ /* 2. hide all previous labels in the table and create and show the new ones */ if (table != NULL) { /* destroy previous table packed into vbox */ gtk_widget_destroy(table); } table = gtk_table_new(3,1,FALSE); /* create new table for the new labels */ if(!launched) { widget = gtk_label_new("File 1"); gtk_label_set_justify(GTK_LABEL(widget), GTK_JUSTIFY_CENTER); gtk_table_attach_defaults (GTK_TABLE (table), widget, 0, 1, 0, 1); widget = gtk_label_new("File 2"); gtk_label_set_justify(GTK_LABEL(widget), GTK_JUSTIFY_CENTER); gtk_table_attach_defaults (GTK_TABLE (table), widget, 0, 1, 1, 2); widget = gtk_label_new("File 3"); gtk_label_set_justify(GTK_LABEL(widget), GTK_JUSTIFY_CENTER); gtk_table_attach_defaults (GTK_TABLE (table), widget, 0, 1, 2, 3); launched = TRUE; result = TRUE; g_print("Timer executed first time!\n"); } else { /* table = gtk_table_new(3,1,FALSE); */ widget = gtk_label_new("File 3"); gtk_label_set_justify(GTK_LABEL(widget), GTK_JUSTIFY_CENTER); gtk_table_attach_defaults (GTK_TABLE (table), widget, 0, 1, 0, 1); widget = gtk_label_new("File 2"); gtk_label_set_justify(GTK_LABEL(widget), GTK_JUSTIFY_CENTER); gtk_table_attach_defaults (GTK_TABLE (table), widget, 0, 1, 1, 2); widget = gtk_label_new("File 1"); gtk_label_set_justify(GTK_LABEL(widget), GTK_JUSTIFY_CENTER); gtk_table_attach_defaults (GTK_TABLE (table), widget, 0, 1, 2, 3); launched = FALSE; result = FALSE; g_print("Timer executed last time!\n"); } /* ADD THE NEWLY CREATED TABLE TO THE VBOX */ gtk_box_pack_start(GTK_BOX(vbox), table, FALSE, FALSE, 0); /* VERY IMPORTANT: SHOW ALL THE NEW LABELS PACKED INTO THE TABLE */ gtk_widget_show_all(table); return result; } </code></pre>

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