Add sub for main project

iFacility/iFacility.pro

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+QT       += core gui
+
+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 += \
+    main.cpp \
+    loginwindow.cpp
+
+HEADERS += \
+    loginwindow.h
+
+FORMS += \
+    loginwindow.ui
+
+# Default rules for deployment.
+qnx: target.path = /tmp/$${TARGET}/bin
+else: unix:!android: target.path = /opt/$${TARGET}/bin
+!isEmpty(target.path): INSTALLS += target

iFacility/loginwindow.cpp

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+#include "loginwindow.h"
+#include "ui_loginwindow.h"
+
+LoginWindow::LoginWindow(QWidget *parent)
+    : QMainWindow(parent)
+    , ui(new Ui::LoginWindow)
+{
+    ui->setupUi(this);
+}
+
+LoginWindow::~LoginWindow()
+{
+    delete ui;
+}
+

iFacility/loginwindow.h

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+#ifndef LOGINWINDOW_H
+#define LOGINWINDOW_H
+
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class LoginWindow; }
+QT_END_NAMESPACE
+
+class LoginWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    LoginWindow(QWidget *parent = nullptr);
+    ~LoginWindow();
+
+private:
+    Ui::LoginWindow *ui;
+};
+#endif // LOGINWINDOW_H

iFacility/loginwindow.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>LoginWindow</class>
+ <widget class="QMainWindow" name="LoginWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>LoginWindow</string>
+  </property>
+  <widget class="QWidget" name="centralwidget"/>
+  <widget class="QMenuBar" name="menubar"/>
+  <widget class="QStatusBar" name="statusbar"/>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

iFacility/main.cpp

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+#include "loginwindow.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+    LoginWindow w;
+    w.show();
+    return a.exec();
+}