Make image conversions using QT ?

From QT Wikipedia

Sample CPP code using <QImage> library

 
#include <QImage>
 
//Somewhere in application
QImage b;
QString curr_app_path = QApplication::applicationDirPath()+"/";
 
if ( !b.load( bgpath /*Original image path*/ ) )
{
	#ifdef DEBUG
		qDebug() << "Could not load image";
	#endif
}else
{	
	#ifdef DEBUG
		qDebug() << "Image loaded";
	#endif
 
	b.save(destdirpath+"testas.bmp"); //In this case we want to convert to bmp format ?
	bgpath = curr_app_path+"testas.bmp";
}