[Kde-games-devel] Problem with signals and slots

[ahmmahfuz rubel]

Actually, there was a 2 way problem. I tried both and both failed.

Because if setupWidgets() is called first then m_gameTheme is invalid and if
setupGame() is first then emit signalLoadTheme(); is invalid as connection
is not made yet. So, though not crash in this case, the slot will not be
called.

Thanks for help
Mahfuz

On Sun, Jul 12, 2009 at 9:37 AM, Zeng Huan <zh.issac at gmail.com> wrote:

> Hi,
> Sorry for my typo.
> you did not create your m_gameTheme before you make connection to it, just
> put setupGame() before setupWidgets()* can fix your problem. line23:24 in
> MainWindow.cpp
>
>
> On Sun, Jul 12, 2009 at 10:35 AM, Zeng Huan <zh.issac at gmail.com> wrote:
>
>> Hi,
>>
>> you did not create your m_gameTheme before you make connection to it, just
>> put setupGame() before m_gameTheme can fix your problem. line23:24 in
>> MainWindow.cpp
>>
>> On Sun, Jul 12, 2009 at 10:17 AM, ahmmahfuz rubel <65mahfuz90 at gmail.com>wrote:
>>
>>> I am having some problem when I tried to connect signals and slots of
>>> different classes. It was not a problem when I connected signals and slots
>>> within the same class(I even don't included the moc file!).
>>>
>>> This is what I have done to connect two different classes:
>>>
>>> I have a signal declared in MainWindow(inheritx kxmlGuiWindow) class
>>> named signalLoadTheme()
>>> and a slot in ThemeManager class(inherits QSvgRenderer) named
>>> slotLoadTheme().
>>>
>>> I created a instance of ThemeManager in MainWindow name m_gameTheme(
>>> ThemeManager* m_Theme)
>>> and connected them in MainWindow using:
>>>
>>> *connect(this, SIGNAL( signalLoadTheme()), m_gameTheme, SLOT(
>>> slotLoadTheme() ));*
>>>
>>>
>>> I used Q_OBJECT in both of the classes at first (tried also including moc
>>> files).
>>>
>>>
>>> But, this is not working, my program is crashing.
>>>
>>> *mahfuz at mahfuz-desktop:/usr/local/bin$ ./TestSignalSlot
>>> KCrash: Application 'TestSignalSlot' crashing...
>>> sock_file=/home/mahfuz/.kde/socket-mahfuz-desktop/kdeinit4__0
>>> Warning: connect() failed: : No such file or directory
>>> KCrash cannot reach kdeinit, launching directly.
>>>
>>> *
>>> The necessary parts of my program is attached here(Not full, it is big).
>>>
>>> Please Help. Also, let me know, when and why including the moc file is
>>> must.
>>>
>>> Thanks in advance.
>>> Mahfuz
>>>
>>>
>>> _______________________________________________
>>> kde-games-devel mailing list
>>> kde-games-devel at kde.org
>>> https://mail.kde.org/mailman/listinfo/kde-games-devel
>>>
>>>
>>
>>
>> --
>> Cheers,
>> Zeng Huan
>>
>
>
>
> --
> Cheers,
> Zeng Huan
>
> _______________________________________________
> kde-games-devel mailing list
> kde-games-devel at kde.org
> https://mail.kde.org/mailman/listinfo/kde-games-devel
>
>
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