Check for QTranslator::load

hbatalha

I have an application where I need to internationalize it.
I have already set up everything and all is working fine. The QTranslator objects all load from the resource file.

What I want to know is that if I need to check the result of each QTranslator object load operation before installing a translator.

I guessing that since all the resource files are compiled into executable file I don't need this check beforeinstalling a translator. But I am not sure.

mrjj

Hi
When in a resource its unlikely it would fail but
say you misspelled the filename, later on, it might be nice
if the code would catch it and show an error.

I would check it as it might work for a long time but
then someone changes a filename or similar, and its
a frustration if it then "just don't work" and the user cannot report
any errors or indication of that went wrong.

hbatalha

@mrjj ok thank you

Pablo J. Rogina

@hbatalha did that reply from @mrjj solve your issue/doubt?
If so please don't forget to mark your post as solved!

hbatalha

@Pablo-J-Rogina yeah I forgot to do that

hbatalha

@mrjj

When in a resource its unlikely it would fail

Well , it seems that it just failed me or I am doing something wrong. I just deployed my application with windeployqt and the resulting .exe doesn't translate the ui unless I add the .qm file to the same directory as I do when I compile my app.

I thought that all the files in the resource file are be compiled into the .exe but it is not happening with the .qm file as all the other files added in the resource seem to be working fine.

SGaist

Hi,

Can you show your .pro file and the way you use QTranslator ?

hbatalha

@SGaist

QT       += core gui
QT       += network

win32 {
    LIBS += -lwininet
}

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    about.cpp \
    main.cpp \
    mainwindow.cpp \
    settings.cpp 

HEADERS += \
    about.h \
    mainwindow.h \
    settings.h 

FORMS += \
    about.ui \
    mainwindow.ui \
    settings.ui 

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

RESOURCES += \
    resources.qrc

TRANSLATIONS += Languages/transl_portuguese.ts

mainwindow.cpp

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    if( ! translatorPt.load(":/Languages/transl_portuguese.qm"))
        qDebug() << "not loaded";

...
}

void MainWindow::updateLanguage()
{
    if(preferences.language == Preferences::Language::ENGLISH)
        qApp->removeTranslator(&translatorPt);
    else if(preferences.language == Preferences::Language::PORTUGUESE)
        qApp->installTranslator(&translatorPt);
}

SGaist

You .pro file has issues, you have several times line endings with a backslash that should not. When listing files vertically, the last one should not have that line.

hbatalha

@SGaist

you have several times line endings with a backslash that should not

That was a mistake of mine, I deleted some commented lines and I missed those backslashes , I will edit the post.

The edited post is now as my .pro file I am using in the program.

SGaist

Ok, can you show your .qrc file ?

hbatalha

@SGaist

SGaist

Can you show it's text content ?

hbatalha

This post is deleted!

SGaist

No, the .qrc raw content.

hbatalha

@SGaist

SGaist

From there it looks all good.

Just for the sake of debugging, you should check the install and remove calls since they return a Boolean.

hbatalha

@SGaist I checked them and they are working fine but after deployment they don't unless I add .qm file to the directory.

SGaist

Did you try to list the content of the .qrc file using QDir at run time just to ensure you have everything in place ?

nagesh

@hbatalha
I feel you missed the second argument for the load function which is the directory path, where as first is the filename.

translatorPt.load(":/Languages/transl_portuguese.qm"))

If directory is not specified, the current directory is used (i.e., as currentPath()).
So in deployment it will search for current path for the .qm file.