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reactos/sdk/lib/atl/atlcomcli.h

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/*
* ReactOS ATL
*
* Copyright 2009 Andrew Hill <ash77@reactos.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include "atlcore.h"
#ifdef _MSC_VER
// It is common to use this in ATL constructors. They only store this for later use, so the usage is safe.
#pragma warning(disable:4355)
#endif
#ifndef _ATL_PACKING
#define _ATL_PACKING 8
#endif
#ifndef _ATL_FREE_THREADED
#ifndef _ATL_APARTMENT_THREADED
#ifndef _ATL_SINGLE_THREADED
#define _ATL_FREE_THREADED
#endif
#endif
#endif
#ifndef ATLTRY
#define ATLTRY(x) x;
#endif
#ifdef _ATL_DISABLE_NO_VTABLE
#define ATL_NO_VTABLE
#else
#define ATL_NO_VTABLE __declspec(novtable)
#endif
namespace ATL
{
inline HRESULT AtlHresultFromLastError() throw()
{
DWORD dwError = ::GetLastError();
return HRESULT_FROM_WIN32(dwError);
}
template<class T>
class CComPtr
{
public:
T *p;
public:
CComPtr()
{
p = NULL;
}
CComPtr(T *lp)
{
p = lp;
if (p != NULL)
p->AddRef();
}
CComPtr(const CComPtr<T> &lp)
{
p = lp.p;
if (p != NULL)
p->AddRef();
}
~CComPtr()
{
if (p != NULL)
p->Release();
}
T *operator = (T *lp)
{
T* pOld = p;
p = lp;
if (p != NULL)
p->AddRef();
if (pOld != NULL)
pOld->Release();
return *this;
}
T *operator = (const CComPtr<T> &lp)
{
T* pOld = p;
p = lp.p;
if (p != NULL)
p->AddRef();
if (pOld != NULL)
pOld->Release();
return *this;
}
// We cannot enable this until gcc starts supporting __uuidof
// See CORE-12710
#if 0
template <typename Q>
T* operator=(const CComPtr<Q>& lp)
{
T* pOld = p;
if (!lp.p || FAILED(lp.p->QueryInterface(__uuidof(T), (void**)(IUnknown**)&p)))
p = NULL;
if (pOld != NULL)
pOld->Release();
return *this;
}
#endif
void Release()
{
if (p != NULL)
{
p->Release();
p = NULL;
}
}
void Attach(T *lp)
{
if (p != NULL)
p->Release();
p = lp;
}
T *Detach()
{
T *saveP;
saveP = p;
p = NULL;
return saveP;
}
T **operator & ()
{
ATLASSERT(p == NULL);
return &p;
}
operator T * ()
{
return p;
}
T *operator -> ()
{
ATLASSERT(p != NULL);
return p;
}
};
//CComQIIDPtr<I_ID(Itype)> is the gcc compatible version of CComQIPtr<Itype>
#define I_ID(Itype) Itype,&IID_##Itype
template <class T, const IID* piid>
class CComQIIDPtr :
public CComPtr<T>
{
public:
// Let's tell GCC how to find a symbol.
using CComPtr<T>::p;
CComQIIDPtr()
{
}
CComQIIDPtr(_Inout_opt_ T* lp) :
CComPtr<T>(lp)
{
}
CComQIIDPtr(_Inout_ const CComQIIDPtr<T,piid>& lp):
CComPtr<T>(lp.p)
{
}
CComQIIDPtr(_Inout_opt_ IUnknown* lp)
{
if (lp != NULL)
{
if (FAILED(lp->QueryInterface(*piid, (void**)(IUnknown**)&p)))
p = NULL;
}
}
T *operator = (T *lp)
{
T* pOld = p;
p = lp;
if (p != NULL)
p->AddRef();
if (pOld != NULL)
pOld->Release();
return *this;
}
T *operator = (const CComQIIDPtr<T,piid> &lp)
{
T* pOld = p;
p = lp.p;
if (p != NULL)
p->AddRef();
if (pOld != NULL)
pOld->Release();
return *this;
}
T * operator=(IUnknown* lp)
{
T* pOld = p;
if (!lp || FAILED(lp->QueryInterface(*piid, (void**)(IUnknown**)&p)))
p = NULL;
if (pOld != NULL)
pOld->Release();
return *this;
}
};
class CComBSTR
{
public:
BSTR m_str;
public:
CComBSTR() :
m_str(NULL)
{
}
CComBSTR(LPCOLESTR pSrc)
{
if (pSrc == NULL)
m_str = NULL;
else
m_str = ::SysAllocString(pSrc);
}
CComBSTR(int length)
{
if (length == 0)
m_str = NULL;
else
m_str = ::SysAllocStringLen(NULL, length);
}
CComBSTR(int length, LPCOLESTR pSrc)
{
if (length == 0)
m_str = NULL;
else
m_str = ::SysAllocStringLen(pSrc, length);
}
CComBSTR(PCSTR pSrc)
{
if (pSrc)
{
int len = MultiByteToWideChar(CP_THREAD_ACP, 0, pSrc, -1, NULL, 0);
m_str = ::SysAllocStringLen(NULL, len - 1);
if (m_str)
{
int res = MultiByteToWideChar(CP_THREAD_ACP, 0, pSrc, -1, m_str, len);
ATLASSERT(res == len);
if (res != len)
{
::SysFreeString(m_str);
m_str = NULL;
}
}
}
else
{
m_str = NULL;
}
}
CComBSTR(const CComBSTR &other)
{
m_str = other.Copy();
}
CComBSTR(REFGUID guid)
{
OLECHAR szGuid[40];
::StringFromGUID2(guid, szGuid, 40);
m_str = ::SysAllocString(szGuid);
}
~CComBSTR()
{
::SysFreeString(m_str);
m_str = NULL;
}
operator BSTR () const
{
return m_str;
}
BSTR *operator & ()
{
return &m_str;
}
CComBSTR &operator = (const CComBSTR &other)
{
::SysFreeString(m_str);
m_str = other.Copy();
return *this;
}
void Attach(BSTR bstr)
{
::SysFreeString(m_str);
m_str = bstr;
}
BSTR Detach()
{
BSTR str = m_str;
m_str = NULL;
return str;
}
BSTR Copy() const
{
if (!m_str)
return NULL;
return ::SysAllocStringLen(m_str, ::SysStringLen(m_str));
}
HRESULT CopyTo(BSTR *other) const
{
if (!other)
return E_POINTER;
*other = Copy();
return S_OK;
}
bool LoadString(HMODULE module, DWORD uID)
{
::SysFreeString(m_str);
m_str = NULL;
const wchar_t *ptr = NULL;
int len = ::LoadStringW(module, uID, (PWSTR)&ptr, 0);
if (len)
m_str = ::SysAllocStringLen(ptr, len);
return m_str != NULL;
}
unsigned int Length() const
{
return ::SysStringLen(m_str);
}
unsigned int ByteLength() const
{
return ::SysStringByteLen(m_str);
}
};
class CComVariant : public tagVARIANT
{
public:
CComVariant()
{
::VariantInit(this);
}
CComVariant(const CComVariant& other)
{
V_VT(this) = VT_EMPTY;
Copy(&other);
}
~CComVariant()
{
Clear();
}
CComVariant(LPCOLESTR lpStr)
{
V_VT(this) = VT_BSTR;
V_BSTR(this) = ::SysAllocString(lpStr);
}
CComVariant(LPCSTR lpStr)
{
V_VT(this) = VT_BSTR;
CComBSTR str(lpStr);
V_BSTR(this) = str.Detach();
}
CComVariant(bool value)
{
V_VT(this) = VT_BOOL;
V_BOOL(this) = value ? VARIANT_TRUE : VARIANT_FALSE;
}
CComVariant(char value)
{
V_VT(this) = VT_I1;
V_I1(this) = value;
}
CComVariant(BYTE value)
{
V_VT(this) = VT_UI1;
V_UI1(this) = value;
}
CComVariant(short value)
{
V_VT(this) = VT_I2;
V_I2(this) = value;
}
CComVariant(unsigned short value)
{
V_VT(this) = VT_UI2;
V_UI2(this) = value;
}
CComVariant(int value, VARENUM type = VT_I4)
{
if (type == VT_I4 || type == VT_INT)
{
V_VT(this) = type;
V_I4(this) = value;
}
else
{
V_VT(this) = VT_ERROR;
V_ERROR(this) = E_INVALIDARG;
}
}
CComVariant(unsigned int value, VARENUM type = VT_UI4)
{
if (type == VT_UI4 || type == VT_UINT)
{
V_VT(this) = type;
V_UI4(this) = value;
}
else
{
V_VT(this) = VT_ERROR;
V_ERROR(this) = E_INVALIDARG;
}
}
CComVariant(long value, VARENUM type = VT_I4)
{
if (type == VT_I4 || type == VT_ERROR)
{
V_VT(this) = type;
V_I4(this) = value;
}
else
{
V_VT(this) = VT_ERROR;
V_ERROR(this) = E_INVALIDARG;
}
}
CComVariant(unsigned long value)
{
V_VT(this) = VT_UI4;
V_UI4(this) = value;
}
CComVariant(float value)
{
V_VT(this) = VT_R4;
V_R4(this) = value;
}
CComVariant(double value, VARENUM type = VT_R8)
{
if (type == VT_R8 || type == VT_DATE)
{
V_VT(this) = type;
V_R8(this) = value;
}
else
{
V_VT(this) = VT_ERROR;
V_ERROR(this) = E_INVALIDARG;
}
}
CComVariant(const LONGLONG& value)
{
V_VT(this) = VT_I8;
V_I8(this) = value;
}
CComVariant(const ULONGLONG& value)
{
V_VT(this) = VT_UI8;
V_UI8(this) = value;
}
CComVariant(const CY& value)
{
V_VT(this) = VT_CY;
V_I8(this) = value.int64;
}
HRESULT Clear()
{
return ::VariantClear(this);
}
HRESULT Copy(_In_ const VARIANT* src)
{
return ::VariantCopy(this, const_cast<VARIANT*>(src));
}
HRESULT ChangeType(_In_ VARTYPE newType, _In_opt_ const LPVARIANT src = NULL)
{
const LPVARIANT lpSrc = src ? src : this;
return ::VariantChangeType(this, lpSrc, 0, newType);
}
};
}; // namespace ATL
#ifndef _ATL_NO_AUTOMATIC_NAMESPACE
using namespace ATL;
#endif //!_ATL_NO_AUTOMATIC_NAMESPACE
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