[Interest] Create the main widget on heap in main()

[devbean at outlook.com]

 Great, I almost forget it. Thank you very much.

Sent from  myMail for iOS

2014年1月11日 星期六 21:28 +0800 from 程梁  <devbean at outlook.com>:
I can't agree Oliver anymore. I believe some code seems OK does not means you should write in that way (just think about business flow control using exception, it's OK, but you should not do so). Now I knew it's OK but I'll still tell my blog readers it does not recommand to do so. :-)

Thank you all!

Cheng Liang
Nanjing, China
http://www.devbean.net

----------------------------------------------------------------------
From: till.oliver.knoll at gmail.com
Date: Sat, 11 Jan 2014 13:49:17 +0100
To: interest at qt-project.org
Subject: Re: [Interest] Create the main widget on heap in main()

Am 11.01.2014 um 13:30 schrieb Etienne Sandré-Chardonnal < etienne.sandre at m4x.org >:

>2014/1/11 Constantin Makshin  < cmakshin at gmail.com >
>>True, but why would one need a parented object in main()? :-)
>
>True, but an object that should be deleted at the last line of main but is not by mistake is a non-leak :)

Technically it is. 
>The process heap is deleted anyway...

The OS is just kind enough to sweep it under the rug. It won't make it easier to find "real" leaks with tools, because your developers will tend to say the same: "It's not a leak, it's cleared by the OS anyway..."

>I've seen already several crashes due to QObjects on stack and double deletions, I just want to point this out...

Fix the double-deletes instead - those are real issues! If an object is double-deleted it might be an indication that it should not have been allocated on the stack in the first place... 

Cheers,
  Oliver
_______________________________________________
Interest mailing list
Interest at qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
_______________________________________________
Interest mailing list
Interest at qt-project.org
http://lists.qt-project.org/mailman/listinfo/interest
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.qt-project.org/pipermail/interest/attachments/20140112/2731d9d5/attachment.html>