Proportion Issue for Qt High-dpi Scaling

[Vic Lin]

Hi there:

I have an issue about the proportion of Qt high-dpi scaling. I am using Qt 5.7.0 for Windows 64-bit (VS 2015) under a 64-bit Windows 10.

Please refer to attached pictures - Screenshot 1 and Screenshot 2 - with details there. What can I do to solve the proportion issue? Please help.

1. I just called QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling); in main.cpp

2. main.cpp is as the following:
   #include "mainwindow.h"
   #include <QApplication>

int main(int argc, char *argv[])
{
QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QGuiApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);

QApplication a(argc, argv);
MainWindow w;
w.show();

return a.exec();

}

3. mainwindow.cpp is as the following:
   #include "mainwindow.h"
   #include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}

MainWindow::~MainWindow()
{
delete ui;
}