Re: Access violation calling auto generated tlh function.

"Igor Tandetnik" <>
Fri, 22 Feb 2008 08:41:10 -0500
"spforeman" <> wrote in message

I'm having a problem with a function call causing an access
violation. The function is a COM function call generated as part of
the #import directive. I'm using VC6.

// Event Handler
HRESULT __stdcall CBHSinkObj::OnBHMoveError(struct _clsErrors **
short errorCode = (*pErrorStruct)->GetErrorCode(); // crash occurs
within GetErrorCode()

I bet the parameter you really get in your error handler is an
IDispatch* pointer, not _clsErrors* pointer. Declare it as such, then
QueryInterface for _clsErrors. Isn't there something like _clsErrorsPtr
declared in the TLH? Just assign to a variable of that type, the
constructor does QueryInterface for you.
With best wishes,
    Igor Tandetnik

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