// -----------------------------------------------------------------------------------
public bool ValidateItems(OPCItemDef[] arrDef, bool blobUpd,
out OPCItemResult[] arrRes)
{
arrRes = null;
bool hasblobs = false;
int count = arrDef.Length;
IntPtr ptrDef = Marshal.AllocCoTaskMem(count * sizeOPCITEMDEF);
int runDef = (int)ptrDef;
OPCITEMDEFintern idf = new OPCITEMDEFintern();
idf.wReserved = 0;
foreach (OPCItemDef d in arrDef)
{
idf.szAccessPath = d.AccessPath;
idf.szItemID = d.ItemID;
idf.bActive = d.Active;
idf.hClient = d.HandleClient;
idf.vtRequestedDataType = (short)d.RequestedDataType;
idf.dwBlobSize = 0; idf.pBlob = IntPtr.Zero;
if (d.Blob != null)
{
idf.dwBlobSize = d.Blob.Length;
if (idf.dwBlobSize > 0)
{
hasblobs = true;
idf.pBlob = Marshal.AllocCoTaskMem(idf.dwBlobSize);
Marshal.Copy(d.Blob, 0, idf.pBlob, idf.dwBlobSize);
}
}
Marshal.StructureToPtr(idf, (IntPtr)runDef, false);
runDef += sizeOPCITEMDEF;
}
IntPtr ptrRes;
IntPtr ptrErr;
int hresult = ifItems.ValidateItems(count, ptrDef, blobUpd, out ptrRes, out ptrErr);
runDef = (int)ptrDef;
if (hasblobs)
{
for (int i = 0; i < count; i++)
{
IntPtr blob = (IntPtr)Marshal.ReadInt32((IntPtr)(runDef + 20));
if (blob != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(blob);
}
Marshal.DestroyStructure((IntPtr)runDef, typeOPCITEMDEF);
runDef += sizeOPCITEMDEF;
}
}
else
{
for (int i = 0; i < count; i++)
{
Marshal.DestroyStructure((IntPtr)runDef, typeOPCITEMDEF);
runDef += sizeOPCITEMDEF;
}
}
Marshal.FreeCoTaskMem(ptrDef);
if (HRESULTS.Failed(hresult))
{
Marshal.ThrowExceptionForHR(hresult);
}
int runRes = (int)ptrRes;
int runErr = (int)ptrErr;
if ((runRes == 0) || (runErr == 0))
{
Marshal.ThrowExceptionForHR(HRESULTS.E_ABORT);
}
arrRes = new OPCItemResult[count];
for (int i = 0; i < count; i++)
{
arrRes[i] = new OPCItemResult();
arrRes[i].Error = Marshal.ReadInt32((IntPtr)runErr);
if (HRESULTS.Failed(arrRes[i].Error))
{
continue;
}
arrRes[i].HandleServer = Marshal.ReadInt32((IntPtr)runRes);
arrRes[i].CanonicalDataType = (VarEnum)(int)Marshal.ReadInt16((IntPtr)(runRes + 4));
arrRes[i].AccessRights = (OPCACCESSRIGHTS)Marshal.ReadInt32((IntPtr)(runRes + 8));
int ptrblob = Marshal.ReadInt32((IntPtr)(runRes + 16));
if ((ptrblob != 0))
{
int blobsize = Marshal.ReadInt32((IntPtr)(runRes + 12));
if (blobsize > 0)
{
arrRes[i].Blob = new byte[blobsize];
Marshal.Copy((IntPtr)ptrblob, arrRes[i].Blob, 0, blobsize);
}
Marshal.FreeCoTaskMem((IntPtr)ptrblob);
}
runRes += sizeOPCITEMRESULT;
runErr += 4;
}
Marshal.FreeCoTaskMem(ptrRes);
Marshal.FreeCoTaskMem(ptrErr);
return(hresult == HRESULTS.S_OK);
}
// -----------------------------------------------------------------------------------
public bool ValidateItems( OPCItemDef[] arrDef, bool blobUpd,
out OPCItemResult[] arrRes)
{
arrRes = null;
bool hasblobs = false;
int count = arrDef.Length;
IntPtr ptrDef = Marshal.AllocCoTaskMem( count * sizeOPCITEMDEF );
int runDef = (int) ptrDef;
OPCITEMDEFintern idf = new OPCITEMDEFintern();
idf.wReserved = 0;
foreach( OPCItemDef d in arrDef )
{
idf.szAccessPath = d.AccessPath;
idf.szItemID = d.ItemID;
idf.bActive = d.Active;
idf.hClient = d.HandleClient;
idf.vtRequestedDataType = (short) d.RequestedDataType;
idf.dwBlobSize = 0; idf.pBlob = IntPtr.Zero;
if( d.Blob != null )
{
idf.dwBlobSize = d.Blob.Length;
if( idf.dwBlobSize > 0 )
{
hasblobs = true;
idf.pBlob = Marshal.AllocCoTaskMem( idf.dwBlobSize );
Marshal.Copy( d.Blob, 0, idf.pBlob, idf.dwBlobSize );
}
}
Marshal.StructureToPtr( idf, (IntPtr) runDef, false );
runDef += sizeOPCITEMDEF;
}
IntPtr ptrRes;
IntPtr ptrErr;
int hresult = ifItems.ValidateItems( count, ptrDef, blobUpd, out ptrRes, out ptrErr );
runDef = (int) ptrDef;
if( hasblobs )
{
for( int i = 0; i < count; i++ )
{
IntPtr blob = (IntPtr) Marshal.ReadInt32( (IntPtr)(runDef + 20) );
if( blob != IntPtr.Zero )
Marshal.FreeCoTaskMem( blob );
Marshal.DestroyStructure( (IntPtr) runDef, typeOPCITEMDEF );
runDef += sizeOPCITEMDEF;
}
}
else
{
for( int i = 0; i < count; i++ )
{
Marshal.DestroyStructure( (IntPtr) runDef, typeOPCITEMDEF );
runDef += sizeOPCITEMDEF;
}
}
Marshal.FreeCoTaskMem( ptrDef );
if( HRESULTS.Failed( hresult ) )
Marshal.ThrowExceptionForHR( hresult );
int runRes = (int) ptrRes;
int runErr = (int) ptrErr;
if( (runRes == 0) || (runErr == 0) )
Marshal.ThrowExceptionForHR( HRESULTS.E_ABORT );
arrRes = new OPCItemResult[ count ];
for( int i = 0; i < count; i++ )
{
arrRes[i] = new OPCItemResult();
arrRes[i].Error = Marshal.ReadInt32( (IntPtr) runErr );
if( HRESULTS.Failed( arrRes[i].Error ) )
continue;
arrRes[i].HandleServer = Marshal.ReadInt32( (IntPtr) runRes );
arrRes[i].CanonicalDataType = (VarEnum)(int) Marshal.ReadInt16( (IntPtr)(runRes + 4) );
arrRes[i].AccessRights = (OPCACCESSRIGHTS) Marshal.ReadInt32( (IntPtr)(runRes + 8) );
int ptrblob = Marshal.ReadInt32( (IntPtr)(runRes + 16) );
if( (ptrblob != 0) )
{
int blobsize = Marshal.ReadInt32( (IntPtr)(runRes + 12) );
if( blobsize > 0 )
{
arrRes[i].Blob = new byte[ blobsize ];
Marshal.Copy( (IntPtr) ptrblob, arrRes[i].Blob, 0, blobsize );
}
Marshal.FreeCoTaskMem( (IntPtr) ptrblob );
}
runRes += sizeOPCITEMRESULT;
runErr += 4;
}
Marshal.FreeCoTaskMem( ptrRes );
Marshal.FreeCoTaskMem( ptrErr );
return hresult == HRESULTS.S_OK;
}