Qt program uses wrong video card

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You can active your Geforce/Radeon video by adding this code:

#ifdef _WIN32
#include <windows.h>
extern "C" __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
extern "C" __declspec(dllexport) DWORD AmdPowerXpressRequestHighPerformance = 0x00000001;
#endif
 
#include "widget.h"
 
#include <QApplication>
 
int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
    QApplication a(argc, argv);
 
    Widget w;
    w.show();
 
    return a.exec();
}

#ifdef _WIN32
#include <windows.h>
extern "C" __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
extern "C" __declspec(dllexport) DWORD AmdPowerXpressRequestHighPerformance = 0x00000001;
#endif

#include "widget.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
    QApplication a(argc, argv);

    Widget w;
    w.show();

    return a.exec();
}

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