Problems with types

[gueverson]

Hello, I am new in programming smart cards and I got an error in
compiling that I cannnot manage to get rid of.
There is a function in the PCSC that is called
"ScardEstablishContext"

I am calling this function as

SCARDCONTEXT hSC; //SCARDCONTEXT=unsigned long
hResult=ScardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL,
&hSC)
If a define hSC as an internal variable of a method and then insisde
this method call ScardEstablishContext there is no problem and it
works. The problem is that afterwards there are some more functions
where I have to pass the parameter hSC.

So I want to define hSC as a private attribute of a class and then
modify its value inside a function.
The problem with this is that I got the following compiling error:

error C2664: ScardEstablisContext can not convert SCARDCONTEXT__gc* to
LPSCARDCONTEXT

It seems the compiler changes the type, although I defined the private
attribute as I did when defining it as a local variable.
I have tried casting and defiining as unsigned long but nothing works.
Please help me!!!!!!!!
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