Hello Mindaugas
Mindaugas Kavaliauskas wrote:
>
>> NOTE: CPP mode generates a GPF when ole is unloaded due to
>> refcount.
>> Mindaugas can you fix it.
>
> I can just repeat myself: can you give self containing sample?
>
GPF is in my code when I call WVG_AxShutdownConnectionPoint().
I have adopted axcore.c | garbase collection function to release the object.
So I am requesting if you review gtwvg/wvgsink.c and following code:
HB_FUNC( WVG_AXSHUTDOWNCONNECTIONPOINT )
{
MyRealIEventHandler* pSink = ( MyRealIEventHandler * ) hb_parptr( 1 );
if( pSink && pSink->pIConnectionPoint )
{
HB_VTBL( pSink->pIConnectionPoint )->Unadvise( HB_THIS_(
pSink->pIConnectionPoint ) pSink->dwEventCookie );
HB_VTBL( pSink->pIConnectionPoint )->Release( HB_THIS(
pSink->pIConnectionPoint ) );
pSink->pIConnectionPoint = NULL;
pSink->dwEventCookie = 0;
}
if( pSink && pSink->pEvents )
hb_itemRelease( pSink->pEvents );
/* in CPP mode following line GPFs on any OLE whose count becomes 0 */
HB_VTBL( ( IEventHandler* ) pSink )->Release( HB_THIS( ( IEventHandler* )
pSink ) );
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
}
In non CPP mode the above code works fine.
You can reproduce it by compiling contrib/gtwvg/tests/demowvg.prg.
Point to <Active-X> menu option and click on first prompt.
After windo is drawn with explorer active-x click the close(X) button.
GPF will appear.
Infact I suspect I am not casting the pointers properly but am unable to
locate where I am erring.
Regards
Pritpal Bedi
OR better if you implement destructor function in wvgsink.c too.
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