RE: problems with gtk pointers

["Vallone, Anthony" <anthony vallone lmco com>]

I think your best bet is to isolate the problem down to a small amount
of stand-alone code.  You will most likely discover the problem in the
process of isolation.  If you don't, re-post the isolated code (the
smaller the better), and I'll take a look again.

-Anthony Vallone

> Hi Anthony,
> 
> thank you for your help, but I really do not see where the 
> pointers are changed and I also didn't experienced any memory 
> problems, here the complete simulation_page.cpp (the third 
> file, where the boxes are attached to the buttons, and where 
> only the first box maintain its proper pointer value):
> 
> 
> #include <simulation_page.h>
> #include <gtk/gtk.h>
> 
> void start_button_callback (GtkWidget *widget, gpointer data) {
> 	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
> 	{
> 
> //		gtk_widget_ref(( ( Surgery* )data 
> )->getGui()->getStartButtonBox());
> 		gtk_container_remove(GTK_CONTAINER (widget), ( 
> ( Surgery* )data )->getGui()->getStartButtonBox());
> //		gtk_container_add(GTK_CONTAINER (widget), ( ( 
> Surgery* )data
> )->getGui()->getStopButtonBox());
> //		gtk_widget_unref(( ( Surgery* )data 
> )->getGui()->getStartButtonBox());
> 
> 		gtk_widget_show (( ( Surgery* )data 
> )->getGui()->getStopButtonBox());
> 		gtk_container_add (GTK_CONTAINER (widget), ( ( 
> Surgery* )data )->getGui()->getStopButtonBox());
> 		gtk_widget_show (widget);
> 
> //		( ( Surgery* )data )->startSimulation();
> 	} else {
> 
> 		gtk_container_remove(GTK_CONTAINER (widget), ( 
> ( Surgery* )data )->getGui()->getStopButtonBox());
> 		gtk_widget_show (( ( Surgery* )data 
> )->getGui()->getStartButtonBox());
> 		gtk_container_add (GTK_CONTAINER (widget), ( ( 
> Surgery* )data )->getGui()->getStartButtonBox());
> 		gtk_widget_show (widget);
> 
> //		( ( Surgery* )data )->stopSimulation();
> 	}
> }
> 
> void record_button_callback (GtkWidget *widget, gpointer data) {
> 	if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)))
> 	{
> 		( ( Surgery* )data )->startRecording();
> 	} else {
> 		( ( Surgery* )data )->stopRecording();
> 	}
> }
> 
> void createSimulationPage(GtkWidget *notebook, Surgery *s) {
> 	
> 	GtkWidget *boxH;
> 	GtkWidget *boxV;
> 	GtkWidget *box;
> 	GtkWidget *button;
> 	GtkWidget *toggle_button;
> 	GtkWidget *frame;
> 	GtkWidget *label;
> 
> 	boxH =  gtk_hbox_new (FALSE, 10);
> 	boxV =  gtk_vbox_new (FALSE, 10);
> 
> 	toggle_button = gtk_toggle_button_new();
> //	box = png_label_box ("gui/icons/player_play.png", "Start");
> 	gtk_widget_show (s->getGui()->getStartButtonBox());
> 	gtk_container_add (GTK_CONTAINER (toggle_button),
> s->getGui()->getStartButtonBox());
> 	gtk_widget_show (toggle_button);
> 	gtk_box_pack_start (GTK_BOX (boxV), toggle_button, 
> TRUE, FALSE, 20);
> 	g_signal_connect (G_OBJECT (toggle_button), "clicked", 
> G_CALLBACK (start_button_callback), (gpointer) s);
> g_print("record: %d\n", s->getGui()->getStartButtonBox());
> 
> 	toggle_button = gtk_toggle_button_new();
> //	box = png_label_box ("gui/icons/player_record.png", "Record");
> 	gtk_widget_show (s->getGui()->getRecordButtonBox());
> 	gtk_container_add (GTK_CONTAINER (toggle_button),
> s->getGui()->getRecordButtonBox());
> 	gtk_widget_show (toggle_button);
> 	gtk_box_pack_start (GTK_BOX (boxV), toggle_button, 
> TRUE, FALSE, 0);
> 	g_signal_connect (G_OBJECT (toggle_button), "clicked", 
> G_CALLBACK (record_button_callback), (gpointer) s);
> g_print("record: %d\n", s->getGui()->getRecordButtonBox());
> 
> 	button = gtk_button_new();
> //	box = 
> png_label_box("gui/icons/applets-screenshooter.png", "Screenshot");
> 	gtk_widget_show(s->getGui()->getScreenshotButtonBox());
> 	gtk_container_add(GTK_CONTAINER (button),
> s->getGui()->getScreenshotButtonBox());
> 	gtk_widget_show(button);
> 	gtk_box_pack_start(GTK_BOX (boxV), button, TRUE, FALSE, 0);
> g_print("record: %d\n", s->getGui()->getScreenshotButtonBox());
> 
> 	frame = gtk_frame_new ("Cryoprobes");
> 	gtk_container_set_border_width (GTK_CONTAINER (frame), 10);
> 	gtk_widget_set_size_request (frame, 150, 75);
> 	gtk_widget_show (frame);
> 	gtk_box_pack_start (GTK_BOX (boxV), frame, FALSE, TRUE, 5);
> 
> 	frame = gtk_frame_new ("Isotherms");
> 	gtk_container_set_border_width (GTK_CONTAINER (frame), 10);
> 	gtk_widget_set_size_request (frame, 150, 75);
> 	gtk_widget_show (frame);
> 	gtk_box_pack_start (GTK_BOX (boxV), frame, FALSE, TRUE, 5);
> 
> 	gtk_widget_show (boxV);
> 	gtk_box_pack_start (GTK_BOX (boxH), boxV, FALSE, TRUE, 5);
> 	gtk_widget_show (boxH);
> 
> // including Drawing Area
> 	GtkWidget *vtk_area;
> 	vtk_area = s->getDrawingArea();
> 	gtk_box_pack_start (GTK_BOX (boxH), vtk_area, 1,1,0);
> 	gtk_widget_set_size_request(vtk_area, 400,400);
> 	gtk_widget_show (vtk_area);
> 
> 	label = gtk_label_new ("Simulation");
> 	gtk_notebook_append_page (GTK_NOTEBOOK (notebook), boxH, label);
> 
> }