overlapping QGraphicsItem problem!!

**Gopala Krishna** · 27th January 2007, 16:45

Originally Posted by boss_bhat

I mean to say the square which has the mouse press event should be the top surface when it is overlapping with another square.

I am sorry as I couldn't understand your problem properly. Any way I feel you are looking for QGraphicsItem::setZvalue(). (Not sure though)

**aamer4yu** · 27th January 2007, 18:30

yes he will have to use setZValue... the z values set initially remain so during the program.If you need that the item should come on top, set the zvalue to a highest value on mouse press so that it is drawn on top of others...
dont forget to set it back to original zvalue, if u are manipulating the items based on zvalue

**Gopala Krishna** · 28th January 2007, 12:36

Looks like there is again problem with boundingRect() as you did it here

boundingRect() should return the bounding area of the item appropriately (For eg square of dim 0,0,100,100 should return not more or less than QRectF(0,0,100,100) ) otherwise it will cause all nuisances like above and also will significantly slow down your program.