HMI-7-[高分屏支持]：Qt 适配高分屏

#include <QApplication>
#include <QDateTime>
#include "ControlPanel/controlpanel.h"
#include "Core/loader.h"
int main(int argc,char *argv[])
{
  #if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
  #endif
    QApplication a(argc,argv);
    Loader *loader = new Loader(":/Core/Resources/Core/LoaderImage.gif");
    loader->show();
    //装逼时刻放开
    QDateTime n=QDateTime::currentDateTime();
    QDateTime now;
    do
    {
        now=QDateTime::currentDateTime();
        a.processEvents();
    }while (n.secsTo(now)<=1);
    ControlPanel controlPanel;
    controlPanel.show();
    loader->finish(&controlPanel);
    delete loader;
    return a.exec();
}