[Qt-interest] QThread problem

[Donal O'Connor]

That to me sounds very messy. You are calling emit on a method thats belong
to an object in a different thread.
Can you give more details of code?

On Wed, Nov 3, 2010 at 1:51 PM, prashant bhutani <
prashantbhutani2008 at gmail.com> wrote:

> actually calling *emit processInfoObj->getProcessInfo*();
> Since, I am defining the QThread object in constructor of processInfo class
> and to use this(getProcessInfo) method, I am passing the pointer to
> processInfo class in the initialization of QThread Object which is
> processInfoObj.
>
> Prashant Bhutani
>
>
>
> On Wed, Nov 3, 2010 at 7:09 PM, Donal O'Connor <donaloconnor at gmail.com>wrote:
>
>> Are you sure you're calling "emit getProcessInfo" and not calling it
>> directly?
>>
>>
>> On Wed, Nov 3, 2010 at 1:27 PM, prashant bhutani <
>> prashantbhutani2008 at gmail.com> wrote:
>>
>>> Hi,
>>>
>>> Thanks.
>>> But with due respect, this is what I am reading everywhere that
>>> connecting
>>> signal with Qt::QueuedConnection will help me out.
>>> But I am not able to sort out how it will happen!!!!!!
>>> I have read the documentation and reading every other link it is guiding
>>> me to
>>> but still I am not able to get that* connect which signal to my
>>> method???*
>>> The method setting table is *void getProcessInfo(void)* and
>>> it contains QTableWidget* widget now I am calling this method
>>> from my run() method in other/child thread and it is where I am
>>> getting the error that " *QObject::setParent: Cannot set parent, new
>>> parent in a different thread*".
>>>
>>> PS :: This is my first time with QThread and trying to sort things out
>>> but I am not able to get enough help even from googling and spent my last
>>> two days in reading the documentation only.
>>>
>>> Prashant Bhutani
>>>
>>>
>>>
>>> On Wed, Nov 3, 2010 at 4:48 PM, Gopalakrishna Bhat <
>>> gopalakbhat at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> You cannot access or modify any of the widget in the main GUI thread
>>>> from any other thread. You can emit a signal in your thread and
>>>> connect it to a method in the main GUI thread which then does the
>>>> updation.
>>>>
>>>> With regards,
>>>> Gopalakrishna Bhat
>>>>
>>>>
>>>> >
>>>> > Hi Everyone,
>>>> >
>>>> > I am trying to build the System Monitor (similar to one in Linux which
>>>> is in
>>>> > GTK) in Qt as my OS lab project.
>>>> > I have done everything needed but now I am stuck with to update it
>>>> > periodically with the processes running on the system.
>>>> > To do so, I thought to implement QThread in my application but since
>>>> the
>>>> > main Thread (GUI thread) is always running, I am not able to modify
>>>> the
>>>> > QTableWidget* widget which is used to show the processes in tabular
>>>> form.
>>>> > Whenever I run my application, in child thread, I got the output that
>>>> "
>>>> > Prashant Bhutani
>>>> >
>>>> > _______________________________________________
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>>>> > Qt-interest at trolltech.com
>>>> > http://lists.trolltech.com/mailman/listinfo/qt-interest
>>>> >
>>>> >
>>>>
>>>>
>>>>
>>>> --
>>>> My blog http://gkbhat.blogspot.com
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>>>
>>>
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>>
>
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