ModalInfoDialog.h

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#ifndef MODALINFODIALOG_H_
#define MODALINFODIALOG_H_

#include <gtk/gtkwindow.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkvbox.h>

#include <string>

namespace gtkutil
{

    class ModalInfoDialog
    {
            // Main dialog widget
            GtkWidget* _widget;

            // Label with info text
            GtkWidget* _label;

        private:

            // GTK Callback to catch delete-event, to prevent destruction of the
            // window
            static gboolean _onDelete (GtkWidget* widget, gpointer data)
            {
                return TRUE; // stop event
            }

        public:

            ModalInfoDialog (GtkWindow* parent, const std::string& title) :
                _widget(gtk_window_new(GTK_WINDOW_TOPLEVEL)), _label(gtk_label_new(""))
            {
                // Window properties
                gtk_window_set_transient_for(GTK_WINDOW(_widget), parent);
                gtk_window_set_modal(GTK_WINDOW(_widget), TRUE);
                gtk_window_set_title(GTK_WINDOW(_widget), title.c_str());
                gtk_window_set_position(GTK_WINDOW(_widget), GTK_WIN_POS_CENTER_ON_PARENT);
                gtk_window_set_default_size(GTK_WINDOW(_widget), 360, 80);

                g_signal_connect(G_OBJECT(_widget), "delete-event", G_CALLBACK(_onDelete), NULL);

                // Pack the label into the window
                GtkWidget* vbx = gtk_vbox_new(FALSE, 0);
                gtk_box_pack_start(GTK_BOX(vbx), _label, TRUE, FALSE, 0);
                gtk_container_add(GTK_CONTAINER(_widget), vbx);
                gtk_container_set_border_width(GTK_CONTAINER(_widget), 6);

                // Show the window
                gtk_widget_show_all(_widget);
            }

            ~ModalInfoDialog ()
            {
                gtk_widget_destroy(_widget);
            }

            void setText (const std::string& text)
            {
                gtk_label_set_markup(GTK_LABEL(_label), text.c_str());
            }
    };

}

#endif /*MODALINFODIALOG_H_*/