[Octave-bug-tracker] [bug #51954] exit in Command Window hangs GUI

[Dan Sebald]

Follow-up Comment #6, bug #51954 (project octave):

Regarding this comment:


variable_editor::~variable_editor (void)
{
  // FIXME: This doesn't work yet.
  //
  //  delete m_main;
  //  delete m_tool_bar;
  //  delete m_tab_widget;
}


The m_tool_bar and m_tab_widget look to be created with a non-NULL parent,
i.e.,


    m_main (new QMainWindow ()),
    m_tool_bar (new QToolBar (m_main)),
    m_tab_widget (new QTabWidget (m_main)),


QMainWindow is probably a container class, meaning that it takes
responsibility of cleaning up all the objects that it holds.  Calling delete
on m_tool_bar and m_tab_widget means delete is most likely done twice, the
second time being an error.

Whether delete needs to be called on m_main, isn't so clear.  (Notice it has
no parent passed into the constructor.)  Should look if that is being cleaned
up indirectly somehow.

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