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// **************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl.html *
// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de) *
// **************************************************************************
#ifndef COM_ERROR_HEADER
#define COM_ERROR_HEADER
#include <string>
#include <cstdio>
#include <comdef.h>
namespace util
{
std::wstring generateErrorMsg(const std::wstring& input, HRESULT hr);
class ComException
{
public:
ComException(const std::wstring& message, HRESULT hr = NO_ERROR)
: message_(message), hr_(hr) {}
std::wstring show() const
{
return hr_ != NO_ERROR ? generateErrorMsg(message_, hr_) : message_;
}
private:
ComException(const ComException&);
ComException& operator=(const ComException&);
const std::wstring message_;
const HRESULT hr_;
};
//################# implementation #####################
inline
std::wstring numberToHexString(long number)
{
wchar_t result[100];
::swprintf(result, 100, L"0x%08x", number);
return std::wstring(result);
}
inline
std::wstring generateErrorMsg(const std::wstring& input, HRESULT hr)
{
std::wstring output(input);
output += L" (";
output += numberToHexString(hr);
output += L": ";
output += _com_error(hr).ErrorMessage();
output += L")";
return output;
}
}
#endif //COM_ERROR_HEADER
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