now MSW stuff is complete
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Karsten Ballüder
145
include/wx/msw/ole/oleutils.h
Normal file
145
include/wx/msw/ole/oleutils.h
Normal file
@@ -0,0 +1,145 @@
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
// Name: oleutils.h
|
||||
// Purpose: OLE helper routines, OLE debugging support &c
|
||||
// Author: Vadim Zeitlin
|
||||
// Modified by:
|
||||
// Created: 19.02.1998
|
||||
// RCS-ID: $Id$
|
||||
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
|
||||
// Licence: wxWindows license
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#ifndef _OLEUTILS_H
|
||||
#define _OLEUTILS_H
|
||||
|
||||
#ifdef __GNUG__
|
||||
#pragma interface "oleutils.h"
|
||||
#endif
|
||||
|
||||
// ============================================================================
|
||||
// General purpose functions and macros
|
||||
// ============================================================================
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// misc helper functions/macros
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// release the interface pointer (if !NULL)
|
||||
inline void ReleaseInterface(IUnknown *pIUnk)
|
||||
{
|
||||
if ( pIUnk != NULL )
|
||||
pIUnk->Release();
|
||||
}
|
||||
|
||||
// release the interface pointer (if !NULL) and make it NULL
|
||||
#define RELEASE_AND_NULL(p) if ( (p) != NULL ) { p->Release(); p = NULL; };
|
||||
|
||||
// return TRUE if the iid is in the array
|
||||
bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount);
|
||||
|
||||
// ============================================================================
|
||||
// IUnknown implementation helpers
|
||||
// ============================================================================
|
||||
|
||||
/*
|
||||
The most dumb implementation of IUnknown methods. We don't support
|
||||
aggregation nor containment, but for 99% of cases this simple
|
||||
implementation is quite enough.
|
||||
|
||||
Usage is trivial: here is all you should have
|
||||
1) DECLARE_IUNKNOWN_METHOS in your (IUnknown derived!) class declaration
|
||||
2) BEGIN/END_IID_TABLE with ADD_IID in between for all interfaces you
|
||||
support (at least all for which you intent to return 'this' from QI,
|
||||
i.e. you should derive from IFoo if you have ADD_IID(Foo)) somewhere else
|
||||
3) IMPLEMENT_IUNKNOWN_METHOS somewhere also
|
||||
|
||||
These macros are quite simple: AddRef and Release are trivial and QI does
|
||||
lookup in a static member array of IIDs and returns 'this' if it founds
|
||||
the requested interface in it or E_NOINTERFACE if not.
|
||||
*/
|
||||
|
||||
// declare the methods and the member variable containing reference count
|
||||
// you must also define the ms_aIids array somewhere with BEGIN_IID_TABLE
|
||||
// and friends (see below)
|
||||
#define DECLARE_IUNKNOWN_METHODS \
|
||||
public: \
|
||||
STDMETHODIMP QueryInterface(REFIID, void **); \
|
||||
STDMETHODIMP_(ULONG) AddRef(); \
|
||||
STDMETHODIMP_(ULONG) Release(); \
|
||||
private: \
|
||||
static const IID *ms_aIids[]; \
|
||||
ULONG m_cRef
|
||||
|
||||
// macros for declaring supported interfaces
|
||||
// NB: you should write ADD_INTERFACE(Foo) and not ADD_INTERFACE(IID_IFoo)!
|
||||
#define BEGIN_IID_TABLE(cname) const IID *cname::ms_aIids[] = {
|
||||
#define ADD_IID(iid) &IID_I##iid,
|
||||
#define END_IID_TABLE }
|
||||
|
||||
// implementation is as straightforward as possible
|
||||
// Parameter: classname - the name of the class
|
||||
#define IMPLEMENT_IUNKNOWN_METHODS(classname) \
|
||||
STDMETHODIMP classname::QueryInterface(REFIID riid, void **ppv) \
|
||||
{ \
|
||||
wxLogQueryInterface(#classname, riid); \
|
||||
\
|
||||
if ( IsIidFromList(riid, ms_aIids, WXSIZEOF(ms_aIids)) ) { \
|
||||
*ppv = this; \
|
||||
AddRef(); \
|
||||
\
|
||||
return S_OK; \
|
||||
} \
|
||||
else { \
|
||||
*ppv = NULL; \
|
||||
\
|
||||
return (HRESULT) E_NOINTERFACE; \
|
||||
} \
|
||||
} \
|
||||
\
|
||||
STDMETHODIMP_(ULONG) classname::AddRef() \
|
||||
{ \
|
||||
wxLogAddRef(#classname, m_cRef); \
|
||||
\
|
||||
return ++m_cRef; \
|
||||
} \
|
||||
\
|
||||
STDMETHODIMP_(ULONG) classname::Release() \
|
||||
{ \
|
||||
wxLogRelease(#classname, m_cRef); \
|
||||
\
|
||||
if ( --m_cRef == 0 ) { \
|
||||
delete this; \
|
||||
return 0; \
|
||||
} \
|
||||
else \
|
||||
return m_cRef; \
|
||||
}
|
||||
|
||||
// ============================================================================
|
||||
// Debugging support
|
||||
// ============================================================================
|
||||
|
||||
#ifdef __DEBUG__
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
//
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// All OLE specific log functions have DebugTrace level (as LogTrace)
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
// tries to translate riid into a symbolic name, if possible
|
||||
void wxLogQueryInterface(const char *szInterface, REFIID riid);
|
||||
|
||||
// these functions print out the new value of reference counter
|
||||
void wxLogAddRef (const char *szInterface, ULONG cRef);
|
||||
void wxLogRelease(const char *szInterface, ULONG cRef);
|
||||
|
||||
#else //!DEBUG
|
||||
#define wxLogQueryInterface(szInterface, riid)
|
||||
#define wxLogAddRef(szInterface, cRef)
|
||||
#define wxLogRelease(szInterface, cRef)
|
||||
#endif //DEBUG
|
||||
|
||||
#endif //_OLEUTILS_H
|
||||
Reference in New Issue
Block a user