DLLIMPORT AND VARIANT ARRAY

Many thanks for you answer, but problems

---------------
c++ method
-------------------------------------------
long __declspec(dllexport) __stdcall Register( const char* szServiceName, const char *szSymbolName, VARIANT& pVariantArray)
{
   SAFEARRAY FAR ** pSArray = V_ARRAYREF(&pVariantArray);
   UINT uDim=0;
   if ( (uDim=SafeArrayGetDim(*pSArray)) != 2 )
   {
    char errbuf[512];
    sprintf ( errbuf, "failed (%d): The variant array dimension is not equal to 2", lRet );
       }
----------------------------------------------------------

but Iget an error, this is the error I get when pass the pointer to the c++ method

"First-chance exception in DllC++.net.exe (OLEAUT32.DLL): 0xC0000005: Access Violation."

Any ideas please Many thanks in advance.

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DLLIMPORT AND VARIANT ARRAY

Fahad1
Many thanks Frank

But I cannot alter this c++ code as its somebody else code and its currently in production..

Refering to your earlier c# sample code

I tried

public static extern int Register(string strService , string strSymbol, ref IntPtr varArray );

instead of

public static extern int Register(string strService , string strSymbol, IntPtr varArray );

i.e., added ref to it ...Now I dont get any error but the array when I debug in the c++ code , I can see lbound value "2042177780" and ubound value "2042112432" definitely I am going wrong somewhere , dont know where... becos the array I pass is only object[4,2]...Any ideas, please help..

fyi

--------------------
c++ code for getting dimensions
--------------------

SafeArrayGetDim(*pSArray) -- works fine

long Row_lbound=0, Row_ubound=0;
   SafeArrayGetLBound(*pSArray,1,&Row_lbound); //value not correct
   SafeArrayGetUBound(*pSArray,1,&Row_ubound); //value not correct
   long lNbrRows = Row_ubound - Row_lbound + 1; //value not correct

long Col_lbound=0, Col_ubound=0;
   SafeArrayGetLBound(*pSArray,2,&Col_lbound); //value not correct
   SafeArrayGetUBound(*pSArray,2,&Col_ubound);//value not correct
   long lNbrCols = Col_ubound - Col_lbound + 1;//value not correct

--------------------

Thanks a lot ..

shaunhey

I think you should be using V_ARRAY not V_ARRAYREF, or just use parray directly...

SAFEARRAY * pArrayVal = pVariantArray.parray;

VARIANT *pArray = NULL;
HRESULT hr = S_OK;

hr = SafeArrayAccessData(pArrayVal, (void HUGEP * FAR *) &pArray);

/* use pArrayVal here */

SafeArrayUnaccessData( pArrayVal );

David Friedland
Frank, please help
DLLIMPORT AND VARIANT ARRAY

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