X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e5ad6961eb70a65860bf458fff694be554acd0e7..7344108e8a129a3f9b4df5ab0f98a1713db03b89:/include/wx/msw/ole/oleutils.h diff --git a/include/wx/msw/ole/oleutils.h b/include/wx/msw/ole/oleutils.h index b31268ca0b..973bbb9982 100644 --- a/include/wx/msw/ole/oleutils.h +++ b/include/wx/msw/ole/oleutils.h @@ -1,27 +1,72 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: oleutils.h +// Name: wx/msw/ole/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 -// 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 +#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() +{ + HRESULT +#ifdef __WXWINCE__ + hr = ::CoInitializeEx(NULL, COINIT_MULTITHREADED); +#else + hr = ::OleInitialize(NULL); +#endif + + // RPC_E_CHANGED_MODE indicates that OLE had been already initialized + // before, albeit with different mode. Don't consider it to be an error as + // we don't actually care ourselves about the mode used so this allows the + // main application to call OleInitialize() on its own before we do if it + // needs non-default mode. + if ( hr != RPC_E_CHANGED_MODE && FAILED(hr) ) + { + wxLogError(_("Cannot initialize OLE")); + + return false; + } + + return true; +} + +inline void wxOleUninitialize() +{ +#ifdef __WXWINCE__ + ::CoUninitialize(); +#else + ::OleUninitialize(); +#endif +} + // ---------------------------------------------------------------------------- // misc helper functions/macros // ---------------------------------------------------------------------------- @@ -36,33 +81,55 @@ 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 WXDLLIMPEXP_CORE 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 **); \ @@ -70,12 +137,13 @@ 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)! +// NB: ADD_IID prepends IID_I whereas ADD_RAW_IID does not #define BEGIN_IID_TABLE(cname) const IID *cname::ms_aIids[] = { #define ADD_IID(iid) &IID_I##iid, +#define ADD_RAW_IID(iid) &iid, #define END_IID_TABLE } // implementation is as straightforward as possible @@ -83,9 +151,9 @@ bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount); #define IMPLEMENT_IUNKNOWN_METHODS(classname) \ STDMETHODIMP classname::QueryInterface(REFIID riid, void **ppv) \ { \ - wxLogQueryInterface(#classname, riid); \ + wxLogQueryInterface(wxT(#classname), riid); \ \ - if ( IsIidFromList(riid, ms_aIids, WXSIZEOF(ms_aIids)) ) { \ + if ( IsIidFromList(riid, ms_aIids, WXSIZEOF(ms_aIids)) ) { \ *ppv = this; \ AddRef(); \ \ @@ -94,22 +162,22 @@ bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount); else { \ *ppv = NULL; \ \ - return (HRESULT) E_NOINTERFACE; \ + return (HRESULT) E_NOINTERFACE; \ } \ } \ \ STDMETHODIMP_(ULONG) classname::AddRef() \ { \ - wxLogAddRef(#classname, m_cRef); \ + wxLogAddRef(wxT(#classname), m_cRef); \ \ return ++m_cRef; \ } \ \ STDMETHODIMP_(ULONG) classname::Release() \ { \ - wxLogRelease(#classname, m_cRef); \ + wxLogRelease(wxT(#classname), m_cRef); \ \ - if ( --m_cRef == 0 ) { \ + if ( --m_cRef == wxAutoULong(0) ) { \ delete this; \ return 0; \ } \ @@ -121,26 +189,73 @@ bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount); // Debugging support // ============================================================================ -#if defined(__DEBUG__) && 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) )) // ---------------------------------------------------------------------------- // 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); +WXDLLIMPEXP_CORE 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); +WXDLLIMPEXP_CORE void wxLogAddRef (const wxChar *szInterface, ULONG cRef); +WXDLLIMPEXP_CORE void wxLogRelease(const wxChar *szInterface, ULONG cRef); -#else //!DEBUG +#else //!__WXDEBUG__ #define wxLogQueryInterface(szInterface, riid) #define wxLogAddRef(szInterface, cRef) #define wxLogRelease(szInterface, cRef) -#endif //DEBUG +#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