MSVC Debug errors

i looked through my code, and i do something *like* that. instead of the void* and casting, i have derived classes. the classes, although are pointed to by their base classes, should be pointing to their an instance of their derived class. would casting these pointer''s and accessing data from a derived class specific variable cause these errors? like i said, the base pointers should be pointing to valid derived classes.

Well, probably not. If you are allocating a derived class, converting the pointer to it''s base and then converting that same pointer back to the same dervied class you should be ok. To make sure, I have tested the code .

class A {
int y;
};

class B : public A {
public:
int i;
};
void __fastcall TForm1::Button1Click(TObject *Sender)
{
B* pB = new B();
pB->i = 896;
B* pB2 = 0;

A* pA = (A*)pB;
pB2 = (B*)pA;
int xx = pB2->i;

//here xx == pB->i
}


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"Programming is like sex make one mistake, and you have to support it forever."
Homepage: http://students.washington.edu/andrey

then what is cuasing these errors?!? its driving me nuts! lol

I got these errors from deleting a DirectX interface pointer, instead of just ->Release()ing it and NULLing it

how do the directx interfaces delete themselves by a call to Release()? is there a call to ''delete this'' in them? i thought that was a bad programming practice...