qt with image Surface as triple buffered to directfb

Hi,

I have created a QT application and using directfb as plugin. The application is seen on the screen but the mouse cursor could not be seen whereas mouse driver is working. when i move the mouse i could see buttons getting highlited and when i click on it, new screen is displayed which is according to my application. I do not know why cursor is not displayed. On debugging i found that Qt creates the Surface as triple buffered and directfb does not processes the surface which is triple buffered. Can anyone tell me how to change triple buffered to primary in Qt