X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ba14d9861d043d53cc53ea70a2fab4146f7be9f3..8397cab4dafee82a887785a80ab8f588a68d9f27:/include/wx/msw/ole/oleutils.h

diff --git a/include/wx/msw/ole/oleutils.h b/include/wx/msw/ole/oleutils.h
index 737939078a..b43624bee2 100644
--- a/include/wx/msw/ole/oleutils.h
+++ b/include/wx/msw/ole/oleutils.h
@@ -12,18 +12,55 @@
 #ifndef   _WX_OLEUTILS_H
 #define   _WX_OLEUTILS_H
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
 #pragma interface "oleutils.h"
 #endif
 
 #include "wx/defs.h"
-#if wxUSE_NORLANDER_HEADERS
+
+#if wxUSE_OLE
+
+// get IUnknown, REFIID &c
 #include <ole2.h>
-#endif
+#include "wx/intl.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 +75,8 @@ 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 +88,42 @@ 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 +131,7 @@ 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 +170,7 @@ 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;                                                               \
     }                                                                         \
@@ -144,5 +203,54 @@ void wxLogRelease(const wxChar *szInterface, ULONG cRef);
   #define   wxLogRelease(szInterface, cRef)
 #endif  //WXDEBUG
 
+// 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
+};
+
+// Convert variants
+class WXDLLEXPORT wxVariant;
+
+bool wxConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant) ;
+bool wxConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant) ;
+
+// Convert string to Unicode
+BSTR wxConvertStringToOle(const wxString& str);
+
+// Convert string from BSTR to wxString
+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