public bool AddItems(OPCItemDef[] arrDef, 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.AddItems(count, ptrDef, 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 AddItems(OPCItemDef[] arrDef, 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.AddItems(count, ptrDef, 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;
}