X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b64f0a5fc7bbe365bcd1b38c346a4033761f49ed..b0d7707bc4abc8f26f5ad0c4be8baa897658c330:/include/wx/msw/ole/oleutils.h diff --git a/include/wx/msw/ole/oleutils.h b/include/wx/msw/ole/oleutils.h index da8a992d1f..b70a76ade8 100644 --- a/include/wx/msw/ole/oleutils.h +++ b/include/wx/msw/ole/oleutils.h @@ -12,18 +12,54 @@ #ifndef _WX_OLEUTILS_H #define _WX_OLEUTILS_H -#ifdef __GNUG__ -#pragma interface "oleutils.h" -#endif - #include "wx/defs.h" -#if wxUSE_NORLANDER_HEADERS + +#if wxUSE_OLE + +// ole2.h includes windows.h, so include wrapwin.h first +#include "wx/msw/wrapwin.h" +// get IUnknown, REFIID &c #include -#endif +#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 // ---------------------------------------------------------------------------- @@ -38,8 +74,8 @@ inline void ReleaseInterface(IUnknown *pIUnk) // 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 @@ -51,20 +87,42 @@ bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount); 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 **); \ @@ -72,7 +130,7 @@ bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount); 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)! @@ -111,7 +169,7 @@ bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount); { \ wxLogRelease(_T(#classname), m_cRef); \ \ - if ( --m_cRef == 0 ) { \ + if ( --m_cRef == wxAutoULong(0) ) { \ delete this; \ return 0; \ } \ @@ -126,7 +184,7 @@ bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount); // 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) +#if defined(__WXDEBUG__) && ( ( defined(__VISUALC__) && (__VISUALC__ >= 1000) ) || defined(__MWERKS__) ) // ---------------------------------------------------------------------------- // All OLE specific log functions have DebugTrace level (as LogTrace) // ---------------------------------------------------------------------------- @@ -138,11 +196,61 @@ void wxLogQueryInterface(const wxChar *szInterface, REFIID riid); 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__ -#endif //_WX_OLEUTILS_H +// wrapper around BSTR type (by Vadim Zeitlin) + +class WXDLLEXPORT wxBasicString +{ +public: + // ctors & dtor + wxBasicString(const char *sz); + wxBasicString(const wxString& str); + ~wxBasicString(); + + void Init(const char* sz); + + // accessors + // just get the string + operator BSTR() const { return m_wzBuf; } + // retrieve a copy of our string - caller must SysFreeString() it later! + BSTR Get() const { return SysAllocString(m_wzBuf); } + +private: + // @@@ not implemented (but should be) + wxBasicString(const wxBasicString&); + wxBasicString& operator=(const wxBasicString&); + + OLECHAR *m_wzBuf; // actual string +}; +#if wxUSE_VARIANT +// Convert variants +class WXDLLIMPEXP_FWD_BASE wxVariant; + +WXDLLEXPORT bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant); +WXDLLEXPORT bool wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant); +#endif // wxUSE_VARIANT + +// Convert string to Unicode +WXDLLEXPORT BSTR wxConvertStringToOle(const wxString& str); + +// Convert string from BSTR to wxString +WXDLLEXPORT 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 //_WX_OLEUTILS_H