Painting without PaintEvent and QGraphicsItem s Management

The Scenario is I am getting Rects of Images over the socket and I need to draw it in a Scrollable Canvas. at the moment I am using a QGraphicsScene and drawing using QGraphicsPixmapItem but after few times when one pixmap overlaps another there is no need to keep the bottom one. and I dont know any simple way to find out the overlapped item and delete it. so its supposed to take huge memory if overlapping goes on like this.

there exists another way out. Make a QWidget and put it in a QScrollArea now draw the QWidget using a QPainter (outside paintEvent ?). If I draw it outside paintEvent I need to inherit the QWidget and make a custom one. pass it a Pixmap and let it draw in its own paintEvent by calling update()

Any cri开发者_C百科tiques ? any other Straight forward solutions there ?