QFileDialog and KDE file dialogs

[Frank Schäfer]

Am 04.03.2017 um 20:59 schrieb David Faure:
> On samedi 4 mars 2017 12:03:08 CET Frank Schäfer wrote:
>> Hi,
>>
>> I'm trying to track down a bug which occurs when using
>> QFileDialog::getSaveFileName in a Qt5-application.
>> With option QFileDialog::DontUseNativeDialog a different dialog
>> displayed, so a native file dialog seems to be used.
>> I've checked the source code of QFileDialog::getSaveFileName and it
>> calls the file dialog which is hooked into
>> _qt_filedialog_save_filename_hook.
>> For KDE4, this seems to be KDialog::getSaveFileName(), but I wasn't able
>> to find out if and where this hook is used in KDE5.
> The hook is gone in Qt5 (or at least unused).
Urgh, I was looking at the wrong Qt version. :/

>
>> Does KDE5 provide a native file dialog at all ?
> Yes.
>
>> If yes, can anybody point me to the right direction ?
> plasma-integration.git provides a "platform theme" plugin which brings in the
> KDE file dialog, cf src/platformtheme/kdeplatformfiledialoghelper.cpp
Thanks, that helps a lot !

>
>> Which dialog is used if KDE4 and KDE5 libraries are installed ?
> There is no KDE5 ;)
I know. ;)

> If you have KF5 and plasma-integration installed, then you'll get the Qt5/KF5
> based file dialog.
> Otherwise you'll get the builtin Qt dialog.
> No way will you ever get a kdelibs4/qt4-based dialog in a Qt5 application,
> that would require loading both versions of Qt at the same time, which is
> impossible ;)
Ok, I'm glad to hear that.

Cheers,
Frank