Не связывается VS2017 и Qt 5.10.1

#pragma once
 
#include <QtWidgets/QMainWindow> //подсвечивается красным
#include "ui_QtGuiApplication2.h"
 
class QtGuiApplication2 : public QMainWindow
{
    Q_OBJECT
 
public:
    QtGuiApplication2(QWidget *parent = Q_NULLPTR);
 
private:
    Ui::QtGuiApplication2Class ui; //подсвечивается красным
};

/********************************************************************************
** Form generated from reading UI file 'qttest.ui'
**
** Created by: Qt User Interface Compiler version 5.6.0
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
********************************************************************************/
 
#ifndef UI_QTTEST_H
#define UI_QTTEST_H
 
#include <QtCore/QVariant>
#include <QtWidgets/QAction>
#include <QtWidgets/QApplication>
#include <QtWidgets/QButtonGroup>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QListView>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QMenuBar>
#include <QtWidgets/QStatusBar>
#include <QtWidgets/QToolBar>
#include <QtWidgets/QWidget>
 
QT_BEGIN_NAMESPACE
 
class Ui_qttestClass
{
public:
    QWidget *centralWidget;
    QListView *listView;
    QMenuBar *menuBar;
    QToolBar *mainToolBar;
    QStatusBar *statusBar;
...