[PyQt] QGraphicsObject added to scene transforms into something else?

Alan Ezust alan.ezust at gmail.com
Fri Feb 13 17:58:51 GMT 2015

That fixed me! Thanks again!

On Fri, Feb 13, 2015 at 8:26 AM, Phil Thompson <phil at riverbankcomputing.com>

> On 13/02/2015 4:20 pm, Alan Ezust wrote:
>> I don't have a test case yet, but I guess I will have to make one.
>> Have any of you heard of a problem like this before?
>> I created a QGraphicsObject-derived class.
>> Added an instance to the scene.
>> Before adding it, I can print it to stdout and see its type/address:
>> <origame.gui.actor_2d_view.actor2d_view.PartWire2dItem object at
>> 0x00000000062C48B8>
>> But after I add it to the scene, this particular object "goes away" and in
>> its place, I find this other item which I never added to the scene:
>> <PyQt5.QtMultimediaWidgets.QGraphicsVideoItem object at
>> 0x00000000062CF9D8>
>> The item still paints itself as a PartWire2dItem should.
>> Why would both the address and the type change as I add it to the scene?
>> Is there some sort of class registration I need to do in order to my
>> objects properly?
>> Or could this be a side-effect of perhaps forgetting to implement one of
>> the pure virtual functions?
>> Sorry if this is not enough info for you to  figure things out yet, I will
>> post a testcase when I have one....
> Make sure you re-implement type() and return a value greater than UserType.
> Phil
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