QT language file production

Purpose

Extract the text in the code to facilitate subsequent changes according to user requirements.

Steps

1. Add language file path to .pro file

TRANSLATIONS += .\tcd_language_English.ts \.\tcd_language_Chinese.ts

2. Generate ts: select Tools > External > Qt Linguist > Update Translation in QTCreate
   

3. View ts files with Linguist that comes with QT.In the pop-up language translation interface, add the appropriate translation language.
   
   

4. Publish and generate qm files: in QTCreate, select Tools > External > Qt Linguist > publish translation.

5. Add the generated qm file to the resource file .qrc.

6. The code is loaded into the program.

// Multiple qm language files added: use multiple QTranslator objectsQTranslator SysTranslator1;QTranslator SysTranslator2;SysTranslator1.load(QString(":/Resource/qt_zh_CN.qm"));SysTranslator2.load(QString(":/Resource/tcd_language_English.qm"));a.installTranslator(&SysTranslator1);a.installTranslator(&SysTranslator2);

How to update

1. Find the corresponding entry in QT Linguist to modify.
2. Fill in the translation information.
   

Tricks

The string in tr() is a variable: tr("%1").arg()

tr(QString()) will cause QT Linguist to not recognize

If the source text has variables in the code, it may or may not be written in the translated text.

Source text: tr("The preset time has been recorded %1min").arg(time);
The translation text can be written as: tr("The preset time is up.") or tr("Default %1 minutes.")