QT_TRANSLATE_NOOP inside static const QMap?

[Opa114]

Hi there,

i have a QMap with some QStrings i want to translate at runtime. So becuase these are static const i have to use QT_TRANSLATE_NOOP() i think - or i'am worng?

I declare and initialize this QMap in one of my Header-Files after the Class-Part.

#ifndef MYCLASS_H
#define MYCLASS_H

#include <QString>
#include <QMap>

class MyClass
{
public:
    MyClass();

private:

};

static const char * const flowers[] = {
    QT_TRANSLATE_NOOP("OrderForm2", "Medium Stem Pink Roses"),
    QT_TRANSLATE_NOOP("OrderForm2", "One Dozen Boxed Roses"),
    QT_TRANSLATE_NOOP("OrderForm2", "Calypso Orchid"),
    QT_TRANSLATE_NOOP("OrderForm2", "Dried Red Rose Bouquet"),
    QT_TRANSLATE_NOOP("OrderForm2", "Mixed Peonies Bouquet"),
    0
};
#endif // MYCLASS_H´

When i run lupdate it found the strings and the i entered the translations for it in QtLinuist and release it. Then i run my Application if tried out the translation but they did not work.
So where is the problem? Thanks in advice!

[mrjj]

Hi
Yes this marks them for extraction by the lupdate tool.

You need a call to tr() to translate it.

QString FriendlyConversation::greeting(int type)
{
    static const char *greeting_strings[] = {
        QT_TR_NOOP("Hello"),
        QT_TR_NOOP("Goodbye")
    };
    return tr(greeting_strings[type]); <<<<<<< returns via tr()
}

http://doc.qt.io/qt-5/i18n-source-translation.html

[Opa114]

yes i tried to print it with (for my example above)

for (int i = 0; flowers[i]; ++i)
        qDebug() << tr(flowers[i]);

but i don't get the translated content printed out.

[mrjj]

How do you load the translation ?
https://wiki.qt.io/How_to_create_a_multi_language_application

[Opa114]

@mrjj said in QT_TRANSLATE_NOOP inside static const QMap?:

How do you load the translation ?
https://wiki.qt.io/How_to_create_a_multi_language_application

i'm exactly loading the translation this way. It work's very well with my other translations, for example the Menu-Entries or other QLabel on which i directly call tr(VALUE). But not the one i posted. Could it be problemativ because i declare and initialize it outside the class?
But i found no other way to declare and initialize a static const variable.

I did some research and found ouut that:
When i call qDebug() << qApp->translate( "OrderForm2", flowers[0] );
instead of qDebug() << tr(flowers[0]); i got the translated content.

But i did it not work without calling qApp->translate() ?

[mrjj]

@Opa114
Well you are using it with a context ("OrderForm2")
and the sample for that actually use app trans

static const char *greeting_strings[] = {
    QT_TRANSLATE_NOOP("FriendlyConversation", "Hello"),
    QT_TRANSLATE_NOOP("FriendlyConversation", "Goodbye")
};

QString FriendlyConversation::greeting(int type)
{
    return tr(greeting_strings[type]);
}

QString global_greeting(int type)
{
    return qApp->translate("FriendlyConversation", <<<< context
           greeting_strings[type]);
}

So it could be related to that. ( context)

[Opa114]

ok it seems so. I tried your other example from the official Qt-Source. But when i declare the greetings_Strings[]-Array outside the class the Strings will not be detectet for translation. I think these are only wokring inside a Class or Method :/

[mrjj]

@Opa114
Oh, are you saying the greeting_strings sample do not work?
It is not in a class. Mind the context thing. It does matter. :)

[Opa114]

@mrjj yes. outside a class it is only working with the context stuff and QT_TRANSLATE_NOOP. QT_TR_NOOP only works inside class. So thanks for helping out.

[mrjj]

@Opa114
Well when not in an object, the context is different, so
I guess that's why to specify one, makes it work.
Well just use what works, it all ends up being the same type
of lookup in a table so TR or qApp->translate should not matter much.

[Opa114]

@mrjj okay - thanks for help!