[Qt-interest] show a widget without a main window

[Malyushytsky, Alex]

It is at least a bad style to rely on system to reclaim the memory.
Because not all systems which are currently in use do it.
Not all system are guarantee to do it in the future.

I believe Windows NT ( 2000 and older ) do reclaim memory, Windows 95 does not.
I am not sure about Windows 98, but expect it does not either.
And Windows 98 is even supported by QT 4.
So it is more than just C++ style problem, it is a leak.

Best regards all.

   Alex


-----Original Message-----
From: qt-interest-bounces at trolltech.com [mailto:qt-interest-bounces at trolltech.com] On Behalf Of Thiago Macieira
Sent: Sunday, March 08, 2009 4:05 AM
To: qt-interest at trolltech.com
Subject: Re: [Qt-interest] show a widget without a main window

Knowledge Seeker wrote:
>"At that point the operating system will re-claim all memory used by the
>application. "
> I dont agree to it, 'heap' if corrupted by user-application, the
>behavior of o/s is undefined to reclaim it back.

I'm sorry, but that is incorrect. No matter what the application did to
its memory space, when the process exits, all of its memory is neatly
reclaimed by the operating system. There's no margin for undefined
behaviour: it simply gets inserted back into the many pools of free memory
pages.

--
Thiago Macieira - thiago.macieira (AT) nokia.com
  Senior Product Manager - Nokia, Qt Software
      Sandakerveien 116, NO-0402 Oslo, Norway


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