Translation of QDialogButtonBox in statically build app

Radim

Hi,
I created an app that is statically build into one exe file. I use the translation .qm files to switch between languages. I load them from the qrc resource file:

QApplication a(argc, argv);
QTranslator translator;
QString locale;
locale = QLocale::system().name();
translator.load(QString(":/lang/myapp_") + locale);
a.installTranslator(&translator);

My problem is that the "OK" and "Cancel" buttons of QDialogButtonBox are not translated.
How to instruct the QT5.5 to include the system .qm files in the exe? I would like to avoid copying the system .qm files into my project.

SGaist

Hi and welcome to devnet,

AFAIK, you can't avoid that copy

Radim

@SGaist Thanks.
If I cannot avoid a copy, can I at least automate the copy to my project via the .pro file by running qmake? Eg. are the translation files across platforms always at the same location?
In addition, do I also need to load the translations manually from the resource file or is there another way to instruct the qt to load them from the resource file?

Radim

Another question related to translations. If I run lrelease myapp.pro, it generates the .qm file in the same directory as the .ts files. Is there a way to specify the output directory?

SGaist

IIRC, you can call lrelease myapp.pro -qm path/qmfile.qm

Radim

Finally I'm able to automatically copy the qt translation files and create resource file from the pro file:

TRANSLATIONS = myapp_cs.ts \
               myapp_xx.ts

QT_TRANSLATIONS = qtbase_cs.qm

#-------------------------------------------------
# create lang folder
QM_DIR = $$shadowed($${PWD})/lang
mkpath($${QM_DIR})
mkpath($${QM_DIR}/lang)

#-------------------------------------------------
# copy system translation files to lang folder
for(FILE,QT_TRANSLATIONS){
    FILE = $$shell_path($$[QT_INSTALL_TRANSLATIONS]/$${FILE})
    system($${QMAKE_COPY} $${FILE} $$shell_path($${QM_DIR}/lang))
}

#-------------------------------------------------
#generate qm files directly from qmake
for(FILE,TRANSLATIONS){
    QM_FILE = $$shell_path($${QM_DIR}/lang/$$replace(FILE,.ts,.qm))
    system(lrelease $${FILE} -qm $${QM_FILE})
}

#-------------------------------------------------
#create resource file with translations
win32:system(cd $$shell_path($${QM_DIR}) & rcc --project -o lang.qrc)
unix:system(cd $$shell_path($${QM_DIR}) ; rcc --project -o lang.qrc)

RESOURCES += $${QM_DIR}/lang.qrc

#-------------------------------------------------
# extra target to generate ts translation files
lupdate.commands     = lupdate $$_PRO_FILE_
lupdate.depends      = FORCE
QMAKE_EXTRA_TARGETS += lupdate

#-------------------------------------------------
# extra compiler to generate qm translation files
lrelease.input         = TRANSLATIONS
lrelease.output        = $${QM_DIR}/lang/${QMAKE_FILE_BASE}.qm
lrelease.commands      = lrelease ${QMAKE_FILE_NAME} -qm ${QMAKE_FILE_OUT}
lrelease.CONFIG       += no_link target_predeps
QMAKE_EXTRA_COMPILERS += lrelease