QtConcurrent::run, непонятки

Хочу считать файл в другом потоке, используя QImageReaderКод:QImageReader imgReader;imgReader.setFileName("filenam e");QImage *img = new QImage();QFuture future = QtConcurrent::run(imgReader, &QImageReader::read);*img = future.result();получаю:Цитировать../Qt/4.4.1/include/QtGui/../../src/gui/image/qimagereader.h: In constructor `QtConcurrent::StoredMemberFunctionCall0 ::StoredMemberFunctionCall0(T (Class::*)(), const Class&) [with T = QImage, Class = QImageReader]':../Qt/4.4.1/include/QtCore/../../src/corelib/concurrent/qtconcurrentrun.h:169: instantiated from `QFuture QtConcurrent::run(const Class&, T (Class::*)()) [with T = QImage, Class = QImageReader]'image.cpp:53: instantiated from here../Qt/4.4.1/include/QtGui/../../src/gui/image/qimagereader.h:133: error: `QImageReader::QImageReader(const QImageReader&)' is private../Qt/4.4.1/include/QtCore/../../src/corelib/concurrent/qtconcurrentstoredfunctioncall.h:120: error: within this contextmingw32-make[1]: *** [debug/image.o] Error 1Что я делаю не так?