Interface pointer Assignment Crashing

[sskumar]

Hi
I have a class
Class MM{
public:
SetInterfacePtr( IsomeInterfacePointer *y)
{
xx = y;// crashing place
};
private:
IADFsomeInterfacePointer *xx;
};

When i have an object variable of type class MM
and call its SetInterfacePtr function it is crashing...

I checked for the content it is not NULL.
What might be the problem?
Can we assign an Interface pointer to another?

S.Senthil Kumar

 

[LazyMe]

Yes we can, but only if both interface pointers reside in the same thread (otherwise it needs more work, but still possible).

Are these smartpointers ?
I don't have experience with those, but maybe the assignment operator is overloaded by smartpointers and something goes wrong there....

Did you try a manual queryinterface on the y-pointer?
Is this pointer valid?

If it's true that you're using smartpointers and what I think is right (assignment operator overloaded and probably executing a queryinterface) the y-pointer needs to be valid.
Greetings,
Rick