// Name: oleutils.h
// Purpose: OLE helper routines, OLE debugging support &c
// Author: Vadim Zeitlin
-// Modified by:
+// Modified by:
// Created: 19.02.1998
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-#ifndef _OLEUTILS_H
-#define _OLEUTILS_H
-
-#ifdef __GNUG__
-#pragma interface "oleutils.h"
-#endif
+#ifndef _WX_OLEUTILS_H
+#define _WX_OLEUTILS_H
#include "wx/defs.h"
+#if wxUSE_OLE
+
+// ole2.h includes windows.h, so include wrapwin.h first
+#include "wx/msw/wrapwin.h"
+// get IUnknown, REFIID &c
+#include <ole2.h>
+#include "wx/intl.h"
+#include "wx/log.h"
+
// ============================================================================
// General purpose functions and macros
// ============================================================================
+// ----------------------------------------------------------------------------
+// initialize/cleanup OLE
+// ----------------------------------------------------------------------------
+
+// call OleInitialize() or CoInitialize[Ex]() depending on the platform
+//
+// return true if ok, false otherwise
+inline bool wxOleInitialize()
+{
+ // we need to initialize OLE library
+#ifdef __WXWINCE__
+ if ( FAILED(::CoInitializeEx(NULL, COINIT_MULTITHREADED)) )
+#else
+ if ( FAILED(::OleInitialize(NULL)) )
+#endif
+ {
+ wxLogError(_("Cannot initialize OLE"));
+
+ return false;
+ }
+
+ return true;
+}
+
+inline void wxOleUninitialize()
+{
+#ifdef __WXWINCE__
+ ::CoUninitialize();
+#else
+ ::OleUninitialize();
+#endif
+}
+
// ----------------------------------------------------------------------------
// misc helper functions/macros
// ----------------------------------------------------------------------------
// 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);
+// return true if the iid is in the array
+extern bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount);
// ============================================================================
// IUnknown implementation helpers
// ============================================================================
/*
- The most dumb implementation of IUnknown methods. We don't support
+ 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
+ 1) DECLARE_IUNKNOWN_METHODS 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
+ 3) IMPLEMENT_IUNKNOWN_METHODS 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.
*/
+/*
+ wxAutoULong: this class is used for automatically initalising m_cRef to 0
+*/
+class wxAutoULong
+{
+public:
+ wxAutoULong(ULONG value = 0) : m_Value(value) { }
+
+ operator ULONG&() { return m_Value; }
+ ULONG& operator=(ULONG value) { m_Value = value; return m_Value; }
+
+ wxAutoULong& operator++() { ++m_Value; return *this; }
+ const wxAutoULong operator++( int ) { wxAutoULong temp = *this; ++m_Value; return temp; }
+
+ wxAutoULong& operator--() { --m_Value; return *this; }
+ const wxAutoULong operator--( int ) { wxAutoULong temp = *this; --m_Value; return temp; }
+
+private:
+ ULONG m_Value;
+};
+
// 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) Release(); \
private: \
static const IID *ms_aIids[]; \
- ULONG m_cRef
+ wxAutoULong m_cRef
// macros for declaring supported interfaces
// NB: you should write ADD_INTERFACE(Foo) and not ADD_INTERFACE(IID_IFoo)!
#define IMPLEMENT_IUNKNOWN_METHODS(classname) \
STDMETHODIMP classname::QueryInterface(REFIID riid, void **ppv) \
{ \
- wxLogQueryInterface(#classname, riid); \
+ wxLogQueryInterface(_T(#classname), riid); \
\
- if ( IsIidFromList(riid, ms_aIids, WXSIZEOF(ms_aIids)) ) { \
+ if ( IsIidFromList(riid, ms_aIids, WXSIZEOF(ms_aIids)) ) { \
*ppv = this; \
AddRef(); \
\
else { \
*ppv = NULL; \
\
- return (HRESULT) E_NOINTERFACE; \
+ return (HRESULT) E_NOINTERFACE; \
} \
} \
\
STDMETHODIMP_(ULONG) classname::AddRef() \
{ \
- wxLogAddRef(#classname, m_cRef); \
+ wxLogAddRef(_T(#classname), m_cRef); \
\
return ++m_cRef; \
} \
\
STDMETHODIMP_(ULONG) classname::Release() \
{ \
- wxLogRelease(#classname, m_cRef); \
+ wxLogRelease(_T(#classname), m_cRef); \
\
- if ( --m_cRef == 0 ) { \
+ if ( --m_cRef == wxAutoULong(0) ) { \
delete this; \
return 0; \
} \
// Debugging support
// ============================================================================
-#if defined(__WXDEBUG__) && defined(_MSC_VER) && (_MSC_VER > 1000)
-// ----------------------------------------------------------------------------
-//
-// ----------------------------------------------------------------------------
-
+// VZ: I don't know it's not done for compilers other than VC++ but I leave it
+// as is. Please note, though, that tracing OLE interface calls may be
+// incredibly useful when debugging OLE programs.
+#if defined(__WXDEBUG__) && ( ( defined(__VISUALC__) && (__VISUALC__ >= 1000) ) || defined(__MWERKS__) )
// ----------------------------------------------------------------------------
// 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);
+void wxLogQueryInterface(const wxChar *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);
+void wxLogAddRef (const wxChar *szInterface, ULONG cRef);
+void wxLogRelease(const wxChar *szInterface, ULONG cRef);
-#else //!WXDEBUG
+#else //!__WXDEBUG__
#define wxLogQueryInterface(szInterface, riid)
#define wxLogAddRef(szInterface, cRef)
#define wxLogRelease(szInterface, cRef)
-#endif //WXDEBUG
+#endif //__WXDEBUG__
+
+// wrapper around BSTR type (by Vadim Zeitlin)
+
+class WXDLLIMPEXP_CORE wxBasicString
+{
+public:
+ // ctors & dtor
+ wxBasicString(const wxString& str);
+ wxBasicString(const wxBasicString& bstr);
+ ~wxBasicString();
+
+ wxBasicString& operator=(const wxBasicString& bstr);
+
+ // accessors
+ // just get the string
+ operator BSTR() const { return m_bstrBuf; }
+ // retrieve a copy of our string - caller must SysFreeString() it later!
+ BSTR Get() const { return SysAllocString(m_bstrBuf); }
+
+private:
+ // actual string
+ BSTR m_bstrBuf;
+};
+
+#if wxUSE_VARIANT
+// Convert variants
+class WXDLLIMPEXP_FWD_BASE wxVariant;
+
+WXDLLIMPEXP_CORE bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant);
+WXDLLIMPEXP_CORE bool wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant);
+#endif // wxUSE_VARIANT
+
+// Convert string to Unicode
+WXDLLIMPEXP_CORE BSTR wxConvertStringToOle(const wxString& str);
+
+// Convert string from BSTR to wxString
+WXDLLIMPEXP_CORE wxString wxConvertStringFromOle(BSTR bStr);
+
+#else // !wxUSE_OLE
+
+// ----------------------------------------------------------------------------
+// stub functions to avoid #if wxUSE_OLE in the main code
+// ----------------------------------------------------------------------------
+
+inline bool wxOleInitialize() { return false; }
+inline void wxOleUninitialize() { }
+
+#endif // wxUSE_OLE/!wxUSE_OLE
-#endif //_OLEUTILS_H
\ No newline at end of file
+#endif //_WX_OLEUTILS_H
projects / wxWidgets.git / blobdiff