Вынес настройки ГУИ в отдельную кнопку

GUIdataBaseLMS/mainwindow.cpp

@@ -12,20 +12,18 @@ MainWindow::MainWindow(QWidget *parent)
 {
     ui->setupUi(this);
 
-    this->setWindowTitle(tr("Learning management system (LMS)"));
-
-    //Задаём два пункта с текстом локалей в комбобоксе
-    ui->cmbLanguage->addItems(QStringList() << "English" << "Русский");
-
     m_instructorsAndTraineesWidget = new InstructorsAndTraineesWidget(this);
 
-    ui->horizontalLayout->addWidget(m_instructorsAndTraineesWidget);
+    connect(m_instructorsAndTraineesWidget,&InstructorsAndTraineesWidget::signal_LanguageChanged,this,&MainWindow::slot_LanguageChanged);
 
-    connect(this, &MainWindow::signal_LanguageChanged, m_instructorsAndTraineesWidget, &InstructorsAndTraineesWidget::slot_LanguageChanged);
+    ui->horizontalLayout->addWidget(m_instructorsAndTraineesWidget);
 
     //this->move(0, 0);
     //this->showNormal();
     this->showMaximized();
+
+    qtLanguageTranslator.load(QString("translations/GUIdataBaseLMS_") + "en_EN", ".");
+    qApp->installTranslator(&qtLanguageTranslator);
 }
 
 MainWindow::~MainWindow()
@@ -43,17 +41,8 @@ void MainWindow::changeEvent(QEvent *event)
     }
 }
 
-void MainWindow::on_cmbLanguage_currentIndexChanged(const QString &arg1)
+void MainWindow::slot_LanguageChanged(QString language)
 {
-    QString language;
-
-    if(arg1 == QStringLiteral("English"))
-        language = QString("en_EN");
-    else
-        language = QString("ru_RU");
-
-    qtLanguageTranslator.load(QString("translations/testDBpgSQL_") + language, ".");
+    qtLanguageTranslator.load(QString(QStringLiteral("translations/GUIdataBaseLMS_")) + language, QStringLiteral("."));
     qApp->installTranslator(&qtLanguageTranslator);
-
-    emit signal_LanguageChanged(language);
 }

GUIdataBaseLMS/mainwindow.h

@@ -22,12 +22,9 @@ public:
 protected:
     void changeEvent(QEvent * event) override;
 
-signals:
-    //сигнал об изменении языка интерфейса
-    void signal_LanguageChanged(QString language);
-
-private slots:
-    void on_cmbLanguage_currentIndexChanged(const QString &arg1);
+public Q_SLOTS:
+    //Слот обработки смены языка
+    void slot_LanguageChanged(QString language);
 
 private:
     Ui::MainWindow *ui;

GUIdataBaseLMS/mainwindow.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>MainWindow</string>
+   <string>Learning management system (LMS)</string>
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QGridLayout" name="gridLayout">
@@ -20,40 +20,6 @@
       <item>
        <layout class="QHBoxLayout" name="horizontalLayout"/>
       </item>
-      <item>
-       <layout class="QHBoxLayout" name="horizontalLayout_2">
-        <item>
-         <spacer name="horizontalSpacer">
-          <property name="orientation">
-           <enum>Qt::Horizontal</enum>
-          </property>
-          <property name="sizeHint" stdset="0">
-           <size>
-            <width>40</width>
-            <height>20</height>
-           </size>
-          </property>
-         </spacer>
-        </item>
-        <item>
-         <widget class="QLabel" name="label">
-          <property name="text">
-           <string>Language</string>
-          </property>
-         </widget>
-        </item>
-        <item>
-         <widget class="QComboBox" name="cmbLanguage">
-          <property name="minimumSize">
-           <size>
-            <width>100</width>
-            <height>0</height>
-           </size>
-          </property>
-         </widget>
-        </item>
-       </layout>
-      </item>
      </layout>
     </item>
    </layout>

GUIdataBaseLMS/translations/GUIdataBaseLMS_ru_RU.ts

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="ru_RU">
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../mainwindow.ui" line="14"/>
+        <source>Learning management system (LMS)</source>
+        <translation>Система управления обучением (СУО)</translation>
+    </message>
+</context>
+</TS>