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

[Zeng Huan]

Then put setupWidgets() before setupGame() and move the connection inside
setupGame() and before your emit.

    connect(this, SIGNAL( signalLoadTheme()), m_gameTheme, SLOT(
slotLoadTheme() ));
    emit signalLoadTheme();


On Sun, Jul 12, 2009 at 11:06 AM, ahmmahfuz rubel <65mahfuz90 at gmail.com>wrote:

> 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
>>
>>
>
> _______________________________________________
> kde-games-devel mailing list
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> https://mail.kde.org/mailman/listinfo/kde-games-devel
>
>


-- 
Cheers,
Zeng Huan
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