Qt with WinRT C++ build issue - c++

Question

I want to build a modern Windows application using WinRT (Windows 10). I use Qt 5.13.1 UWP kits for Visual Studio 2017. When building a project, it displays a lot of compilation errors:
Code:
testproject.pro
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++17
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
testproject.cpp
HEADERS += \
testproject.h
FORMS += \
testproject.ui
LIBS += -lwindowsapp
# Default rules for deployment.
#qnx: target.path = /tmp/$${TARGET}/bin
#else: unix:!android: target.path = /opt/$${TARGET}/bin
#!isEmpty(target.path): INSTALLS += target
testproject.h
#ifndef TESTPROJECT_H
#define TESTPROJECT_H
#include <QDialog>
#include <QDebug>
#include "winrt/Windows.System.Diagnostics.h"
using namespace winrt;
using namespace Windows::System::Diagnostics;
QT_BEGIN_NAMESPACE
namespace Ui { class TestProject; }
QT_END_NAMESPACE
class TestProject : public QDialog
{
Q_OBJECT
public:
TestProject(QWidget *parent = nullptr);
~TestProject();
private:
Ui::TestProject *ui;
};
#endif // TESTPROJECT_H
testproject.cpp
#include "testproject.h"
#include "ui_testproject.h"
TestProject::TestProject(QWidget *parent)
: QDialog(parent)
, ui(new Ui::TestProject)
{
ui->setupUi(this);
init_apartment();
auto info = SystemDiagnosticInfo::GetForCurrentSystem();
auto memory = info.MemoryUsage().GetReport().TotalPhysicalSizeInBytes();
qDebug() << memory;
}
TestProject::~TestProject()
{
delete ui;
}
Without WinRT code it compiles successfully. Any ideas how to configure WinRT using Qt? What libraries are required for Qt to run WinRT code? Thanks in advance.

Answer 1

Try either adding #undef X64 before #include "winrt/Windows.System.Diagnostics.h" or go to your project settings, select "Configuration Properties" -> "C/C++" -> "Preprocessor", in the dropdown next to "Preprocessor Definitions" select "Edit", remove the line X64. I've no idea what this define is for, but it conflicts with the ProcessorArchitecture::X64 enum in Windows.System.0.h.
PS. This answer is just a reproduced guesswork as I can't make much sense of the errors on the screenshot. Usually copy-pasting the text from the Output panel is more informative than the Error List.