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Source code

QWidget * centralWidget= new QWidget(mw_WatchPhotos);
		mw_WatchPhotos->resize(800,600);
		QGridLayout * layout = new QGridLayout();
		centralWidget->setLayout(layout);

		int size = 0;
		int u = 1;
		while ( size == 0 )
		{
			if(myClass->number_of_photos <= u*u) size = u;
			else u++;
		}
	
		QLabel * images = new QLabel[myClass->number_of_photos];

		int row = 0;
		for(int i = 0 ; i < myClass->number_of_photos ; ++i)
		{
			if(i%size == 0 && i != 0) row++;
			QPixmap myimage(QString(myClass->loadphotos_directory.c_str())+QString('/')+QString(myClass->files_name[i].c_str()));
			images[i].setPixmap(myimage.scaled(800/size,600/size));
			layout->addWidget(&images[i],row,i%size);
		}

		mw_WatchPhotos->setCentralWidget(centralWidget);
		mw_WatchPhotos->show();