Add Load multilingual function

[fairycn]

Add the function of loading multiple languages

7

At present, it is necessary to download the required Language file .qm (published) or the unpublished language file .ts before the program runs, translate and publish it, rename it to PELanguage.qm and copy it into the language directory before it can be used.

example

• file directory
• Use examples

[hasherezade]

Hi @fairycn ! Thank you for your contribution. There are some fixes required before I can merge it. First of all, the QApplication is initialized twice, which is a mistake, and on Linux, it causes the window to nor render at all. Second, the mime types, and the CSS code should not be in tagged for translation. I prepared a patch file that you can apply. You can download it from here:

https://gist.github.com/hasherezade/b8abf31d46328c16669a2a457602fb29

And then apply with the help of git:

git apply patch1.diff

Then let me know and I will merge it.

[hasherezade]

@fairycn - I see that you removed QTranslator by mistake. This line:

QTranslator translator;

before:

    if (translator.load("Language\\PELanguage.qm")) {
        app.installTranslator(&translator); 
    }

This wasn't in the patch file. Please add the translator, and I will check again.

[hasherezade]

Looks good now, thank you!