memory with multiple windows opening and closing

[Mohammadreza99A]

I have an application with a loot of windows. And in every window, I close the current window and open an other window by doing this:

close();
mainMen = new MainMenu(get_this_peer(), username, this);
 mainMen->show();

but the problem is that when i use this method, I see that my memory usage is going up. Is there a way to completely remove the current window and launch another window ?
I have already tried setAttribute( Qt::WA_DeleteOnClose, true ) but it does not work

[Christian Ehrlicher]

@Mohammadreza99A said in memory with multiple windows opening and closing:

I have already tried setAttribute( Qt::WA_DeleteOnClose, true ) but it does not work

I does work, please show us a minimal code example which shows a memleak

You should delete mainMen before assigning it a new value