QGraphicsItem: How block input without hack ?

[Alundra]

Hi,
I actually use a hack to block input for one QGraphicsItem but I wonder if it's possible without.
My hack is to set the item selectable and in the itemChange event set selected to false if it changed.
Basically I only just want to block the mouse button press event because I handle the logic of this item in the scene events.
Is it possible without this hack and have the item not selectable ? It works but the selection changed event is then called on this item...
Thank you