window display error

[liwallace <wallace lee hotmail com>]

I met a windows display error. Please help me.
 
I create two windows in glade file. one window is main window with menus. The other (sub window) will be displayed after clicking a menu item. After clicking the menu item, the window appear very shortly and disappeared. you can see a window flashing one time on the screen.
 
 
The sub window header file is :

#include <gtkmm.h>
#include <iostream>
class GardenPresent
{
    public:
      GardenPresent(Gtk::Window& parent);
      virtual ~GardenPresent();

      Gtk::Window* get_window();
         
  private:

   Gtk::Window* wndGardenPresent;
  
   int load_ui();
};

 

The sub window cc file is :

 

#include "GardenPresent.h"

GardenPresent::GardenPresent(Gtk::Window& parent)
{
 load_ui();
 wndGardenPresent->set_transient_for(parent);
}

GardenPresent::~GardenPresent()
{
 delete wndGardenPresent;

}

 

Gtk::Window* GardenPresent::get_window()
{
   return wndGardenPresent;
}

int GardenPresent::load_ui()
{

    Glib::RefPtr<Gtk::Builder> refBuilder = Gtk::Builder::create();

        refBuilder->add_from_file(mnuPresent_glade_file);

    refBuilder->get_widget("wndGardenPresent", wndGardenPresent);
 
    return 0;

}

The menu item signal handler is :

 

void gkass::on_mnuGardenPresent_activate()
{
 

  GardenPresent GardenPresent1(*gkassWindow);
 
  GardenPresent1.get_window()->show(); 
 
} //The window appears on show() and disappears after this handler end.

 

 

I try to use a gtk::dialog instead of gtk::window. The dialog can display normally. So I think maybe gtkmm only allow one window exist in a program. Is it right ?

 

Thanks

 

Wallace.

 

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