/** hiding.c **/
#include <gnome.h>

void closeDialog(GtkWidget *widget,gpointer data);
void showDialog(GtkWidget *widget,gpointer data);
gint eventShutdown(GtkWidget *widget,gpointer data);

typedef struct {
    GtkWidget *dialog;
} hidingContext;

int main(int argc,char *argv[])
{
    GtkWidget *topLevelWindow;
    GtkWidget *dialogButton;
    hidingContext context;

    context.dialog = NULL;

    gnome_init("hiding","1.0",argc,argv);
    topLevelWindow = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_signal_connect(GTK_OBJECT(topLevelWindow),
            "destroy",
            GTK_SIGNAL_FUNC(eventShutdown),
            &context);
    gtk_container_set_border_width(
            GTK_CONTAINER(topLevelWindow),20);

    dialogButton = gtk_button_new_with_label("Dialog");
    gtk_signal_connect(GTK_OBJECT(dialogButton),
            "clicked",
            GTK_SIGNAL_FUNC(showDialog),
            &context);
    gtk_container_add(GTK_CONTAINER(topLevelWindow),
            dialogButton);

    gtk_widget_show(dialogButton);
    gtk_widget_show(topLevelWindow);

    gtk_main();
    exit(0);
}
gint eventShutdown(GtkWidget *widget,gpointer data) {
    hidingContext *context;

    context = (hidingContext *)data;
    if(context->dialog != NULL)
        gtk_widget_destroy(GTK_WIDGET(context->dialog));
    gtk_main_quit();
    return(0);
}
void showDialog(GtkWidget *widget,gpointer data) {
    GtkWidget *button;
    hidingContext *context;

    context = (hidingContext *)data;

    if(context->dialog == NULL) {
        context->dialog =
                gtk_window_new(GTK_WINDOW_DIALOG);
        button = gtk_button_new_with_label("Close Dialog");
        gtk_container_set_border_width(
                GTK_CONTAINER(context->dialog),20);
        gtk_container_add(GTK_CONTAINER(context->dialog),
                button);
        gtk_signal_connect(GTK_OBJECT(button),
                "clicked",
                GTK_SIGNAL_FUNC(closeDialog),
                context->dialog);
        gtk_window_set_modal(GTK_WINDOW(context->dialog),
                TRUE);
        gtk_widget_show(button);
    }
    gtk_widget_show(context->dialog);
}

void closeDialog(GtkWidget *widget,gpointer data)
{
    gtk_widget_hide(GTK_WIDGET(data));
}