Cast for argument to delete[] - VC6 doesn't want to delete a const pointer

[wxWidgets.git] / include / wx / msw / ole / oleutils.h

diff --git a/include/wx/msw/ole/oleutils.h b/include/wx/msw/ole/oleutils.h
index a628ee50a4f1eafb1caa1432fa0ff5a3c7048e9c..7766d6b9c58c868fa31ecceb5603f0720943de6b 100644 (file)
--- a/include/wx/msw/ole/oleutils.h
+++ b/include/wx/msw/ole/oleutils.h
@@ -12,20 +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
-    #include <ole2.h>
-#endif
+#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
 // ----------------------------------------------------------------------------
@@ -40,7 +74,7 @@ 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
+// return true if the iid is in the array
 extern bool IsIidFromList(REFIID riid, const IID *aIids[], size_t nCount);
 
 // ============================================================================
@@ -73,8 +107,8 @@ public:
     wxAutoULong(ULONG value = 0) : m_Value(value) { }
 
     operator ULONG&() { return m_Value; }
-    ULONG& operator=(ULONG value) { return m_Value = 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; }
 
@@ -135,7 +169,7 @@ private:
   {                                                                           \
     wxLogRelease(_T(#classname), m_cRef);                                     \
                                                                               \
-    if ( --m_cRef == 0 ) {                                                    \
+    if ( --m_cRef == wxAutoULong(0) ) {                                                    \
       delete this;                                                            \
       return 0;                                                               \
     }                                                                         \
@@ -162,11 +196,58 @@ 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 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  //_WX_OLEUTILS_H