#include "MainWindow.h"
#include "SpritePackerProjectFile.h"
#include <QApplication>

int commandLine(QCoreApplication& app);

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QCoreApplication::setOrganizationName("amakaseev");
    QCoreApplication::setOrganizationDomain("spicyminds-lab.com");
    QCoreApplication::setApplicationName("SpriteSheetPacker");
    QCoreApplication::setApplicationVersion("1.0.3");
    //QDir::setCurrent(QApplication::applicationDirPath());

    SpritePackerProjectFile::factory().set<SpritePackerProjectFile>("json");
    SpritePackerProjectFile::factory().set<SpritePackerProjectFileOLD>("sp");
    SpritePackerProjectFile::factory().set<SpritePackerProjectFileTPS>("tps");

    if (argc > 1) {
        return commandLine(app);
    } else {
        MainWindow w;
        w.show();
        return app.exec();
    }
}

#include "MainWindow.h"
#include "SpritePackerProjectFile.h"
#include <QApplication>

int commandLine(QCoreApplication& app);

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
#ifdef Q_OS_WIN32
        QApplication::setStyle(QStyleFactory::create("Fusion"));
#endif

    QCoreApplication::setOrganizationName("amakaseev");
    QCoreApplication::setOrganizationDomain("spicyminds-lab.com");
    QCoreApplication::setApplicationName("SpriteSheetPacker");
    QCoreApplication::setApplicationVersion("1.0.3");
    //QDir::setCurrent(QApplication::applicationDirPath());

    SpritePackerProjectFile::factory().set<SpritePackerProjectFile>("json");
    SpritePackerProjectFile::factory().set<SpritePackerProjectFileOLD>("sp");
    SpritePackerProjectFile::factory().set<SpritePackerProjectFileTPS>("tps");

    if (argc > 1) {
        return commandLine(app);
    } else {
        MainWindow w;
        w.show();
        return app.exec();
    }
}

--- 
+++ 
@@ -7,9 +7,6 @@
 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
-#ifdef Q_OS_WIN32
-        QApplication::setStyle(QStyleFactory::create("Fusion"));
-#endif
 
     QCoreApplication::setOrganizationName("amakaseev");
     QCoreApplication::setOrganizationDomain("spicyminds-lab.com");
Use windows native look and feel