[Qt-interest] Can an Qt Application contain 2 mainwindow?

[Vincent Cai]

Thanks a lot.
Great article, need more time to digest for me, a newbie. :)

The conclusion is: The Qt GUI must run in main thread, right?

-----Original Message-----
From: qt-interest-bounces+wcai=cypress.com at qt.nokia.com [mailto:qt-interest-bounces+wcai=cypress.com at qt.nokia.com] On Behalf Of Samuel Gaist
Sent: 2011年9月22日 17:53
To: Qt-interest
Subject: Re: [Qt-interest] Can an Qt Application contain 2 mainwindow?

Hi,

The answer lies here:
http://doc.qt.nokia.com/4.8/thread-basics.html#gui-thread-and-worker-thread

Hope it helps
Samuel

On 22 sept. 2011, at 11:46, Vincent Cai wrote:

> Thanks.
>
> The error happens when I try to new b window in other thread.
>
> #include "TSAUtility.h"
>
> TSAUtility::TSAUtility(void) : QThread()
> {
>     DataUtt = NULL;
> }
>
> TSAUtility::~TSAUtility()
> {
>     this->terminate();
>     this->wait();
>
>     if(DataUtt)
>     {
>         delete DataUtt;
>         DataUtt = NULL;
>     }
>
>     emit SignUttClose();
> }
>
> void TSAUtility::run()
> {
>     DataUtt = new DataUtility();//failed here
>
>     DataUtt->show();
>     while(true)
>     {
>
>     }
> }
>
> Do you know why?
>
> -----Original Message-----
> From: Konstantin Tokarev [mailto:annulen at yandex.ru]
> Sent: 2011年9月22日 17:30
> To: Vincent Cai
> Cc: qt-interest at qt.nokia.com
> Subject: Re: [Qt-interest] Can an Qt Application contain 2 mainwindow?
>
> 22.09.2011, 13:28, "Vincent Cai" <wcai at cypress.com>:
> > Dear all,
> >
> >          I have and GUI application with is based on QMainwindow(a.ui).
> >
> >          And I create the other *.ui which is also based on QMainwindow(b.ui).
> >
> > When I try to open b window through menu of a window, it fail at initialization:
> >
> >         DataUtility::DataUtility(QWidget*parent):
> >
> >         QMainWindow(parent),
> >
> >         ui(newUi::DataUtility)//fail
> >
> >         {
> >
> >                 ui->setupUi(this);
> >
> > }
> >
> >          Could anybody help?
>
> Qt Application certainly can have > 1 QMainWindow. Search for bug in your code.
>
>
> --
> Regards,
> Konstantin
>
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