Translation issue: use another file for a certain form

SherifOmran

Hello guys,

I am developing a program where at the beginning I should use a translation file. However, I have to change the translation file for a certain class (Game). In other words, I want to separate all gui translations into a file and this game translation in another file.

Steps :
1- separted the game from the program
2- build the translation file of the game, translated and made the release.
3- Problem --->> Translation is not shown. I need help. In the main constructor I placed the following code

@
QApplication a(argc, argv);

KeyBoardMap *w = new Game();
QTranslator translator;
translator.load("ab_ab.qm");
a.installTranslator(&translator);

@

Is this correct?

I should then merge this game class into the other software, can I load a translation file from a form.cpp and not from main.cpp?

thanks

AcerExtensa

does your ab_ab.qm file exist in the same folder where your executable is?

bq. I should then merge this game class into the other software, can I load a translation file from a form.cpp and not from main.cpp?

Sure you can, but be sure to create your QTranslator instance on the heap... and use qApp() instead of a

SherifOmran

Yes the path is correct, here is a simple example where the complete path is removed.

how to use qApp? It does not accept

qApp.installTranslator ?

do you mean the form that loads the game class should be an Application class?

AcerExtensa

bq. Yes the path is correct, here is a simple example where the complete path is removed.

Do you actually use QObject::tr() or translate() in your code for strings which needs to be translated?

bq. how to use qApp? It does not accept

@
qApp->installTranslator
@

It is only needed if you will load your translation elsewhere when in main function...

AcerExtensa

And I have forgot to say:

bq. Note that the translator must be created before the application's widgets.

SherifOmran

Thank you, now it works

@
QTranslator* translator = new QTranslator;
translator->load("/.../.../.../abc.qm");
qApp->installTranslator(translator);
@

But it works from inside the form. Will this be global, I mean will other forms use the same translation file ? should I load the other translation file again after this form quits?

AcerExtensa

It is application global, but you must be sure what QTranslator instance exist till you unload translation or loads another one... Make it global or singleton.

Macro

Please edit your Question and add [Solved] infront of it

Thanks and Regards...

giesbert

Hi SherifOmran,

you can use multiple QTranslator instances in one process, that is no problem. Just the translations must be unique. If you use tr() within a QObject, the class name is also part of the search logic, which makes it easier. If you use QObject::translate(...) you add a context as parameter which has the same meaning as the class in a QObject derived class (which is used as context there).

So using multiple qm files for different classes / libraries is no problem. At least, my apps always load 2 (my local one and one for Qt).