Question

I’m constructing a UI using wxWidgets.

In my GUI, I generate a window (wxFrame class) which is accessible through pushing a bitmap button. In that window, I also perform some tasks, again pushing some bitmap buttons and diabling them etc. But I can’t close and reopen that window with the state saved. I always have to re-initialize it, and this is very impractical.

How can I save the state of my window? I checked the internet, it’s suggested to use wxPersistent class but this class is missing in my wxWidgets.

Thank you for any help,

Best Regards.

Answer 1

Instead of destroying the window every time, you can just hide it with the wxWindow::Show() member function, passing false as the argument, when you receive a wxCloseEvent. You then veto the wxCloseEvent to prevent WxWidgets from destroying your window:

// In your close handler:
if(evt.CanVeto()) // Where evt is a wxCloseEvent
{
    Show(false);  // Hide window
    evt.Veto();   // Prevent window destruction
}

This should remove it from the screen, but all the initialized parts should still be there. If you need to show it again, call the Show() method again with true.