windows-nt/Source/XPSP1/NT/net/upnp/common/upcom/ustring2.cpp
2020-09-26 16:20:57 +08:00

65 lines
1.4 KiB
C++

//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 2000.
//
// File: U S T R I N G 2 . C P P
//
// Contents: Simple string class
//
// Notes:
//
// Author: mbend 17 Aug 2000
//
//----------------------------------------------------------------------------
#include <pch.h>
#pragma hdrstop
#include "UString.h"
#include "ComUtility.h"
HRESULT CUString::HrGetBSTR(BSTR * pbstr) const
{
CHECK_POINTER(pbstr);
HRESULT hr = S_OK;
*pbstr = SysAllocString(m_sz ? m_sz : L"");
if(!*pbstr)
{
hr = E_OUTOFMEMORY;
}
TraceHr(ttidError, FAL, hr, FALSE, "CUString::GetBSTR");
return hr;
}
HRESULT CUString::HrGetCOM(wchar_t ** psz) const
{
CHECK_POINTER(psz);
HRESULT hr = S_OK;
*psz = reinterpret_cast<wchar_t*>(CoTaskMemAlloc((GetLength() + 1) * sizeof(wchar_t)));
if(*psz)
{
lstrcpy(*psz, m_sz ? m_sz: L"\0");
}
else
{
hr = E_OUTOFMEMORY;
}
TraceHr(ttidError, FAL, hr, FALSE, "CUString::GetCOM");
return hr;
}
HRESULT CUString::HrInitFromGUID(const GUID & guid)
{
HRESULT hr = S_OK;
Clear();
const int c_cchGuidWithTerm = 39; // includes terminating null
wchar_t szGUID[c_cchGuidWithTerm];
StringFromGUID2(guid, szGUID, c_cchGuidWithTerm);
hr = HrAssign(szGUID);
TraceHr(ttidError, FAL, hr, FALSE, "CUString::HrInitFromGUID");
return hr;
}