// Clone
HRESULT COpcEnumString::Clone(IEnumString** ppEnum)
{
// check for invalid arguments.
if (ppEnum == NULL)
{
return E_INVALIDARG;
}
// allocate enumerator.
COpcEnumString* pEnum = new COpcEnumString();
// copy strings.
pEnum->m_pStrings = OpcArrayAlloc(LPWSTR, m_uCount);
for (UINT ii = 0; ii < m_uCount; ii++)
{
pEnum->m_pStrings[ii] = OpcArrayAlloc(WCHAR, wcslen(m_pStrings[ii])+1);
wcscpy(pEnum->m_pStrings[ii], m_pStrings[ii]);
}
// set index.
pEnum->m_uIndex = m_uIndex;
pEnum->m_uCount = m_uCount;
HRESULT hResult = pEnum->QueryInterface(IID_IEnumString, (void**)ppEnum);
// release local reference.
pEnum->Release();
return hResult;
}
// CopyData
void COpcText::CopyData(LPCWSTR szData, UINT uLength)
{
m_cData.Empty();
if (uLength > 0 && szData != NULL)
{
LPWSTR wszData = OpcArrayAlloc(WCHAR, uLength+1);
wcsncpy(wszData, szData, uLength);
wszData[uLength] = L'\0';
m_cData = wszData;
OpcFree(wszData);
}
}
WCHAR* OpcStrDup(LPCWSTR szValue)
{
WCHAR* pCopy = NULL;
if (szValue != NULL)
{
pCopy = OpcArrayAlloc(WCHAR, wcslen(szValue)+1);
if (pCopy == NULL)
{
return NULL;
}
wcscpy(pCopy, szValue);
}
return pCopy;
}
CHAR* OpcStrDup(LPCSTR szValue)
{
CHAR* pCopy = NULL;
if (szValue != NULL)
{
pCopy = OpcArrayAlloc(CHAR, strlen(szValue)+1);
if (pCopy == NULL)
{
return NULL;
}
strcpy(pCopy, szValue);
}
return pCopy;
}
