QClipboard Doesn't Support QPixmap and QImage on Symbian

Can not get QPixmap or QImage from clipboard by QClipboard.

Example Code:

QClipboard *clipboard = QApplication::clipboard();
clipboard->clear();

QPixmap pmap(60, 70);
QPixmap cbp;
QVERIFY(clipboard->pixmap(QClipboard::Clipboard).isNull());

clipboard->setPixmap(pmap, QClipboard::Clipboard);

cbp = clipboard->pixmap(QClipboard::Clipboard);
QVERIFY( !cbp.isNull()); // failed