[Qt-interest] qfontdatabase_qws.cpp access private data from qfontdatabase.cpp

[Donal O'Connor]

Alessandro has replied there with a correct answer I think :)

On Thu, Jul 9, 2009 at 12:22 PM, Linda Maria <linda.maria.bjork at gmail.com>wrote:

> Hi
>
> Thanks for you reply. I am reffering to the code in the QtGui/text
> lib. What we got is:
>
> qfontdatabase.cpp has declaration of a private class:
>
> class QFontDatabasePrivate
> {
> ...
> };
>
> qfonddatabase.h has forward declaration of that class:
> class QFontDatabasePrivate;
>
>
> Then strange things happens when qfontdatabase_qws.cpp has access to
> QFontDatabasePrivate (qfontdatabase_qws.cpp is not including
> qfontdatabase.cpp and, therefore only has access to the forward declaration
> in qfonddatabase.h).
>
> Thanks,
> Linda
>
>
>
>
>
> On Thu, Jul 9, 2009 at 1:07 PM, Donal O'Connor <donaloconnor at gmail.com>wrote:
>
>> I don't have any code to look here but is it declared as a friend class?
>>
>>
>> On Thu, Jul 9, 2009 at 11:54 AM, Linda Maria <linda.maria.bjork at gmail.com
>> > wrote:
>>
>>> Hi again
>>>
>>> My question was obviously not well formulated. It is simple,
>>> qfontdatabase_qws.cpp is accessing private implementation declared in
>>> qfontdatabase.cpp. How is this done?
>>>
>>> Thanks,
>>> Linda
>>>
>>>
>>>> Message: 5
>>>> Date: Thu, 9 Jul 2009 11:38:45 +0200
>>>> From: Linda Maria <linda.maria.bjork at gmail.com>
>>>> Subject: [Qt-interest] How does qfontdatabase_qws.cpp access private
>>>>        data    from qfontdatabase.h?
>>>> To: qt-interest at trolltech.com
>>>> Message-ID:
>>>>        <9ecdb1790907090238j1bee2ca1u4917f9b832ed28 at mail.gmail.com>
>>>> Content-Type: text/plain; charset="iso-8859-1"
>>>>
>>>> Hi
>>>>
>>>> I thought I knew how to read C++ code, but obviously I was wrong. I
>>>> cannot
>>>> figure out how private data from qfontdatabase.cpp can be accessed from
>>>> qfontdatabase.h. For example:
>>>>
>>>>
>>>> QFontDatabasePrivate is delclared and partly implemented in
>>>> qfontdatabase.cpp and only forward declared in qfontdatabase.h. Then,
>>>> qfontdatabase_qws.cpp starts accessing the QFontDatabasePrivate
>>>> implementation. How is this done?
>>>>
>>>> It would be nice if Qt used more of pure C++ code rather than showing
>>>> off
>>>> with macro definitions.
>>>>
>>>> Thanks,
>>>>
>>>> Linda
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