fixing 'main screen'

[wxWidgets.git] / include / wx / variant.h

diff --git a/include/wx/variant.h b/include/wx/variant.h
index 0e3e71f195c2c43a76ecfd553bab27ae2e26001c..e24fe8fffc68c51b2aa7d3c4a5b9281564e41ae4 100644 (file)
--- a/include/wx/variant.h
+++ b/include/wx/variant.h
@@ -20,26 +20,22 @@
 #include "wx/string.h"
 #include "wx/arrstr.h"
 #include "wx/list.h"
 #include "wx/string.h"
 #include "wx/arrstr.h"
 #include "wx/list.h"

+#include "wx/cpp.h"
+#include "wx/longlong.h"

 
 #if wxUSE_DATETIME
     #include "wx/datetime.h"
 #endif // wxUSE_DATETIME
 
 
 #if wxUSE_DATETIME
     #include "wx/datetime.h"
 #endif // wxUSE_DATETIME
 

-#if wxUSE_ODBC
-    #include "wx/db.h"  // will #include sqltypes.h
-#endif //ODBC
-

 #include "wx/iosfwrap.h"
 
 #include "wx/iosfwrap.h"
 

+class wxAny;
+

 /*
  * wxVariantData stores the actual data in a wxVariant object,
  * to allow it to store any type of data.
  * Derive from this to provide custom data handling.
  *
 /*
  * wxVariantData stores the actual data in a wxVariant object,
  * to allow it to store any type of data.
  * Derive from this to provide custom data handling.
  *

- * NB: To prevent addition of extra vtbl pointer to wxVariantData,
- *     we don't multiple-inherit from wxObjectRefData. Instead,
- *     we simply replicate the wxObject ref-counting scheme.
- *

  * NB: When you construct a wxVariantData, it will have refcount
  *     of one. Refcount will not be further increased when
  *     it is passed to wxVariant. This simulates old common
  * NB: When you construct a wxVariantData, it will have refcount
  *     of one. Refcount will not be further increased when
  *     it is passed to wxVariant. This simulates old common


@@ -58,13 +54,11 @@
  * overloading wxVariant with unnecessary functionality.
  */
 
  * overloading wxVariant with unnecessary functionality.
  */
 

-class WXDLLIMPEXP_BASE wxVariantData: public wxObject
+class WXDLLIMPEXP_BASE wxVariantData : public wxObjectRefData

 {
     friend class wxVariant;
 public:
 {
     friend class wxVariant;
 public:

-    wxVariantData()
-        : wxObject(), m_count(1)
-    { }
+    wxVariantData() { }

 
     // Override these to provide common functionality
     virtual bool Eq(wxVariantData& data) const = 0;
 
     // Override these to provide common functionality
     virtual bool Eq(wxVariantData& data) const = 0;


@@ -82,26 +76,20 @@ public:
     // If it based on wxObject return the ClassInfo.
     virtual wxClassInfo* GetValueClassInfo() { return NULL; }
 
     // If it based on wxObject return the ClassInfo.
     virtual wxClassInfo* GetValueClassInfo() { return NULL; }
 

-    void IncRef() { m_count++; }
-    void DecRef()
-    {
-        if ( --m_count == 0 )
-            delete this;
-    }
+    // Implement this to make wxVariant::UnShare work. Returns
+    // a copy of the data.
+    virtual wxVariantData* Clone() const { return NULL; }

 
 

-    int GetRefCount() const { return m_count; }
+#if wxUSE_ANY
+    // Converts value to wxAny, if possible. Return true if successful.
+    virtual bool GetAsAny(wxAny* WXUNUSED(any)) const { return false; }
+#endif

 
 protected:
     // Protected dtor should make some incompatible code
     // break more louder. That is, they should do data->DecRef()
     // instead of delete data.
     virtual ~wxVariantData() { }
 
 protected:
     // Protected dtor should make some incompatible code
     // break more louder. That is, they should do data->DecRef()
     // instead of delete data.
     virtual ~wxVariantData() { }

-
-private:
-    int     m_count;
-
-private:
-    DECLARE_ABSTRACT_CLASS(wxVariantData)

 };
 
 /*
 };
 
 /*


@@ -109,6 +97,10 @@ private:
  * built in.
  */
 
  * built in.
  */
 

+class WXDLLIMPEXP_FWD_BASE wxVariant;
+
+WX_DECLARE_LIST_WITH_DECL(wxVariant, wxVariantList, class WXDLLIMPEXP_BASE);
+

 class WXDLLIMPEXP_BASE wxVariant: public wxObject
 {
 public:
 class WXDLLIMPEXP_BASE wxVariant: public wxObject
 {
 public:


@@ -116,6 +108,9 @@ public:
 
     wxVariant(const wxVariant& variant);
     wxVariant(wxVariantData* data, const wxString& name = wxEmptyString);
 
     wxVariant(const wxVariant& variant);
     wxVariant(wxVariantData* data, const wxString& name = wxEmptyString);

+#if wxUSE_ANY
+    wxVariant(const wxAny& any);
+#endif

     virtual ~wxVariant();
 
     // generic assignment
     virtual ~wxVariant();
 
     // generic assignment


@@ -137,14 +132,17 @@ public:
 
     // For compatibility with wxWidgets <= 2.6, this doesn't increase
     // reference count.
 
     // For compatibility with wxWidgets <= 2.6, this doesn't increase
     // reference count.

-    wxVariantData* GetData() const { return m_data; }
+    wxVariantData* GetData() const
+    {
+        return (wxVariantData*) m_refData;
+    }

     void SetData(wxVariantData* data) ;
 
     // make a 'clone' of the object
     void SetData(wxVariantData* data) ;
 
     // make a 'clone' of the object

-    void Ref(const wxVariant& clone);
+    void Ref(const wxVariant& clone) { wxObject::Ref(clone); }

 
 

-    // destroy a reference
-    void UnRef();
+    // ensure that the data is exclusive to this variant, and not shared
+    bool Unshare();

 
     // Make NULL (i.e. delete the data)
     void MakeNull();
 
     // Make NULL (i.e. delete the data)
     void MakeNull();


@@ -162,6 +160,10 @@ public:
     // write contents to a string (e.g. for debugging)
     wxString MakeString() const;
 
     // write contents to a string (e.g. for debugging)
     wxString MakeString() const;
 

+#if wxUSE_ANY
+    wxAny GetAny() const;
+#endif
+

     // double
     wxVariant(double val, const wxString& name = wxEmptyString);
     bool operator== (double value) const;
     // double
     wxVariant(double val, const wxString& name = wxEmptyString);
     bool operator== (double value) const;


@@ -183,59 +185,99 @@ public:
     long GetLong() const;
 
     // bool
     long GetLong() const;
 
     // bool

-#ifdef HAVE_BOOL

     wxVariant(bool val, const wxString& name = wxEmptyString);
     bool operator== (bool value) const;
     bool operator!= (bool value) const;
     void operator= (bool value) ;
     inline operator bool () const {  return GetBool(); }
     bool GetBool() const ;
     wxVariant(bool val, const wxString& name = wxEmptyString);
     bool operator== (bool value) const;
     bool operator!= (bool value) const;
     void operator= (bool value) ;
     inline operator bool () const {  return GetBool(); }
     bool GetBool() const ;

-#endif

 
     // wxDateTime
 #if wxUSE_DATETIME
     wxVariant(const wxDateTime& val, const wxString& name = wxEmptyString);
 
     // wxDateTime
 #if wxUSE_DATETIME
     wxVariant(const wxDateTime& val, const wxString& name = wxEmptyString);

-#if wxUSE_ODBC
-    wxVariant(const DATE_STRUCT* valptr, const wxString& name = wxEmptyString);
-    wxVariant(const TIME_STRUCT* valptr, const wxString& name = wxEmptyString);
-    wxVariant(const TIMESTAMP_STRUCT* valptr, const wxString& name = wxEmptyString);
-#endif

     bool operator== (const wxDateTime& value) const;
     bool operator!= (const wxDateTime& value) const;
     void operator= (const wxDateTime& value) ;
     bool operator== (const wxDateTime& value) const;
     bool operator!= (const wxDateTime& value) const;
     void operator= (const wxDateTime& value) ;

-#if wxUSE_ODBC
-    void operator= (const DATE_STRUCT* value) ;
-    void operator= (const TIME_STRUCT* value) ;
-    void operator= (const TIMESTAMP_STRUCT* value) ;
-#endif

     inline operator wxDateTime () const { return GetDateTime(); }
     wxDateTime GetDateTime() const;
 #endif
 
     // wxString
     wxVariant(const wxString& val, const wxString& name = wxEmptyString);
     inline operator wxDateTime () const { return GetDateTime(); }
     wxDateTime GetDateTime() const;
 #endif
 
     // wxString
     wxVariant(const wxString& val, const wxString& name = wxEmptyString);

-    wxVariant(const wxChar* val, const wxString& name = wxEmptyString); // Necessary or VC++ assumes bool!
+    // these overloads are necessary to prevent the compiler from using bool
+    // version instead of wxString one:
+    wxVariant(const char* val, const wxString& name = wxEmptyString);
+    wxVariant(const wchar_t* val, const wxString& name = wxEmptyString);
+    wxVariant(const wxCStrData& val, const wxString& name = wxEmptyString);
+    wxVariant(const wxScopedCharBuffer& val, const wxString& name = wxEmptyString);
+    wxVariant(const wxScopedWCharBuffer& val, const wxString& name = wxEmptyString);
+

     bool operator== (const wxString& value) const;
     bool operator!= (const wxString& value) const;
     bool operator== (const wxString& value) const;
     bool operator!= (const wxString& value) const;

-    void operator= (const wxString& value) ;
-    void operator= (const wxChar* value) ; // Necessary or VC++ assumes bool!
+    wxVariant& operator=(const wxString& value);
+    // these overloads are necessary to prevent the compiler from using bool
+    // version instead of wxString one:
+    wxVariant& operator=(const char* value)
+        { return *this = wxString(value); }
+    wxVariant& operator=(const wchar_t* value)
+        { return *this = wxString(value); }
+    wxVariant& operator=(const wxCStrData& value)
+        { return *this = value.AsString(); }
+    template<typename T>
+    wxVariant& operator=(const wxScopedCharTypeBuffer<T>& value)
+        { return *this = value.data(); }
+

     inline operator wxString () const {  return MakeString(); }
     wxString GetString() const;
 
     inline operator wxString () const {  return MakeString(); }
     wxString GetString() const;
 

-    // wxChar
-    wxVariant(wxChar val, const wxString& name = wxEmptyString);
-    bool operator== (wxChar value) const;
-    bool operator!= (wxChar value) const;
-    void operator= (wxChar value) ;
-    inline operator wxChar () const { return GetChar(); }
-    wxChar GetChar() const ;
+#if wxUSE_STD_STRING
+    wxVariant(const std::string& val, const wxString& name = wxEmptyString);
+    bool operator==(const std::string& value) const
+        { return operator==(wxString(value)); }
+    bool operator!=(const std::string& value) const
+        { return operator!=(wxString(value)); }
+    wxVariant& operator=(const std::string& value)
+        { return operator=(wxString(value)); }
+    operator std::string() const { return (operator wxString()).ToStdString(); }
+
+    wxVariant(const wxStdWideString& val, const wxString& name = wxEmptyString);
+    bool operator==(const wxStdWideString& value) const
+        { return operator==(wxString(value)); }
+    bool operator!=(const wxStdWideString& value) const
+        { return operator!=(wxString(value)); }
+    wxVariant& operator=(const wxStdWideString& value)
+        { return operator=(wxString(value)); }
+    operator wxStdWideString() const { return (operator wxString()).ToStdWstring(); }
+#endif // wxUSE_STD_STRING
+
+    // wxUniChar
+    wxVariant(const wxUniChar& val, const wxString& name = wxEmptyString);
+    wxVariant(const wxUniCharRef& val, const wxString& name = wxEmptyString);
+    wxVariant(char val, const wxString& name = wxEmptyString);
+    wxVariant(wchar_t val, const wxString& name = wxEmptyString);
+    bool operator==(const wxUniChar& value) const;
+    bool operator==(const wxUniCharRef& value) const { return *this == wxUniChar(value); }
+    bool operator==(char value) const { return *this == wxUniChar(value); }
+    bool operator==(wchar_t value) const { return *this == wxUniChar(value); }
+    bool operator!=(const wxUniChar& value) const { return !(*this == value); }
+    bool operator!=(const wxUniCharRef& value) const { return !(*this == value); }
+    bool operator!=(char value) const { return !(*this == value); }
+    bool operator!=(wchar_t value) const { return !(*this == value); }
+    wxVariant& operator=(const wxUniChar& value);
+    wxVariant& operator=(const wxUniCharRef& value) { return *this = wxUniChar(value); }
+    wxVariant& operator=(char value) { return *this = wxUniChar(value); }
+    wxVariant& operator=(wchar_t value) { return *this = wxUniChar(value); }
+    operator wxUniChar() const { return GetChar(); }
+    operator char() const { return GetChar(); }
+    operator wchar_t() const { return GetChar(); }
+    wxUniChar GetChar() const;

 
     // wxArrayString
     wxVariant(const wxArrayString& val, const wxString& name = wxEmptyString);
     bool operator== (const wxArrayString& value) const;
     bool operator!= (const wxArrayString& value) const;
     void operator= (const wxArrayString& value);
 
     // wxArrayString
     wxVariant(const wxArrayString& val, const wxString& name = wxEmptyString);
     bool operator== (const wxArrayString& value) const;
     bool operator!= (const wxArrayString& value) const;
     void operator= (const wxArrayString& value);

-    inline operator wxArrayString () const { return GetArrayString(); }
+    operator wxArrayString () const { return GetArrayString(); }

     wxArrayString GetArrayString() const;
 
     // void*
     wxArrayString GetArrayString() const;
 
     // void*


@@ -243,7 +285,7 @@ public:
     bool operator== (void* value) const;
     bool operator!= (void* value) const;
     void operator= (void* value);
     bool operator== (void* value) const;
     bool operator!= (void* value) const;
     void operator= (void* value);

-    inline operator void* () const {  return GetVoidPtr(); }
+    operator void* () const {  return GetVoidPtr(); }

     void* GetVoidPtr() const;
 
     // wxObject*
     void* GetVoidPtr() const;
 
     // wxObject*


@@ -253,27 +295,36 @@ public:
     void operator= (wxObject* value);
     wxObject* GetWxObjectPtr() const;
 
     void operator= (wxObject* value);
     wxObject* GetWxObjectPtr() const;
 

-
-#if WXWIN_COMPATIBILITY_2_4
-    wxDEPRECATED( wxVariant(const wxStringList& val, const wxString& name = wxEmptyString) );
-    wxDEPRECATED( bool operator== (const wxStringList& value) const );
-    wxDEPRECATED( bool operator!= (const wxStringList& value) const );
-    wxDEPRECATED( void operator= (const wxStringList& value) );
-    wxDEPRECATED( wxStringList& GetStringList() const );
+#if wxUSE_LONGLONG
+    // wxLongLong
+    wxVariant(wxLongLong, const wxString& name = wxEmptyString);
+    bool operator==(wxLongLong value) const;
+    bool operator!=(wxLongLong value) const;
+    void operator=(wxLongLong value);
+    operator wxLongLong() const { return GetLongLong(); }
+    wxLongLong GetLongLong() const;
+
+    // wxULongLong
+    wxVariant(wxULongLong, const wxString& name = wxEmptyString);
+    bool operator==(wxULongLong value) const;
+    bool operator!=(wxULongLong value) const;
+    void operator=(wxULongLong value);
+    operator wxULongLong() const { return GetULongLong(); }
+    wxULongLong GetULongLong() const;

 #endif
 
     // ------------------------------
     // list operations
     // ------------------------------
 
 #endif
 
     // ------------------------------
     // list operations
     // ------------------------------
 

-    wxVariant(const wxList& val, const wxString& name = wxEmptyString); // List of variants
-    bool operator== (const wxList& value) const;
-    bool operator!= (const wxList& value) const;
-    void operator= (const wxList& value) ;
+    wxVariant(const wxVariantList& val, const wxString& name = wxEmptyString); // List of variants
+    bool operator== (const wxVariantList& value) const;
+    bool operator!= (const wxVariantList& value) const;
+    void operator= (const wxVariantList& value) ;

     // Treat a list variant as an array
     wxVariant operator[] (size_t idx) const;
     wxVariant& operator[] (size_t idx) ;
     // Treat a list variant as an array
     wxVariant operator[] (size_t idx) const;
     wxVariant& operator[] (size_t idx) ;

-    wxList& GetList() const ;
+    wxVariantList& GetList() const ;

 
     // Return the number of elements in a list
     size_t GetCount() const;
 
     // Return the number of elements in a list
     size_t GetCount() const;


@@ -302,37 +353,138 @@ public:
     bool Convert(bool* value) const;
     bool Convert(double* value) const;
     bool Convert(wxString* value) const;
     bool Convert(bool* value) const;
     bool Convert(double* value) const;
     bool Convert(wxString* value) const;

-    bool Convert(wxChar* value) const;
+    bool Convert(wxUniChar* value) const;
+    bool Convert(char* value) const;
+    bool Convert(wchar_t* value) const;

 #if wxUSE_DATETIME
     bool Convert(wxDateTime* value) const;
 #endif // wxUSE_DATETIME
 #if wxUSE_DATETIME
     bool Convert(wxDateTime* value) const;
 #endif // wxUSE_DATETIME

+#if wxUSE_LONGLONG
+    bool Convert(wxLongLong* value) const;
+    bool Convert(wxULongLong* value) const;
+  #ifdef wxLongLong_t
+    bool Convert(wxLongLong_t* value) const
+    {
+        wxLongLong temp;
+        if ( !Convert(&temp) )
+            return false;
+        *value = temp.GetValue();
+        return true;
+    }
+    bool Convert(wxULongLong_t* value) const
+    {
+        wxULongLong temp;
+        if ( !Convert(&temp) )
+            return false;
+        *value = temp.GetValue();
+        return true;
+    }
+  #endif // wxLongLong_t
+#endif // wxUSE_LONGLONG

 
 // Attributes
 protected:
 
 // Attributes
 protected:

-    wxVariantData*  m_data;
+    virtual wxObjectRefData *CreateRefData() const;
+    virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
+

     wxString        m_name;
 
 private:
     DECLARE_DYNAMIC_CLASS(wxVariant)
 };
 
     wxString        m_name;
 
 private:
     DECLARE_DYNAMIC_CLASS(wxVariant)
 };
 

-/* Fake macro parameter value */
-#ifdef EMPTY_PARAMETER_VALUE
-    #undef EMPTY_PARAMETER_VALUE
-#endif
-#define EMPTY_PARAMETER_VALUE
+
+//
+// wxVariant <-> wxAny conversion code
+//
+#if wxUSE_ANY
+
+#include "wx/any.h"
+
+// In order to convert wxAny to wxVariant, we need to be able to associate
+// wxAnyValueType with a wxVariantData factory function.
+typedef wxVariantData* (*wxVariantDataFactory)(const wxAny& any);
+
+// Actual Any-to-Variant registration must be postponed to a time when all
+// global variables have been initialized. Hence this arrangement.
+// wxAnyToVariantRegistration instances are kept in global scope and
+// wxAnyValueTypeGlobals in any.cpp will use their data when the time is
+// right.
+class WXDLLIMPEXP_BASE wxAnyToVariantRegistration
+{
+public:
+    wxAnyToVariantRegistration(wxVariantDataFactory factory);
+    virtual ~wxAnyToVariantRegistration();
+
+    virtual wxAnyValueType* GetAssociatedType() = 0;
+    wxVariantDataFactory GetFactory() const { return m_factory; }
+private:
+    wxVariantDataFactory    m_factory;
+};
+
+template<typename T>
+class wxAnyToVariantRegistrationImpl : public wxAnyToVariantRegistration
+{
+public:
+    wxAnyToVariantRegistrationImpl(wxVariantDataFactory factory)
+        : wxAnyToVariantRegistration(factory)
+    {
+    }
+
+    virtual wxAnyValueType* GetAssociatedType()
+    {
+        return wxAnyValueTypeImpl<T>::GetInstance();
+    }
+private:
+};
+
+#define DECLARE_WXANY_CONVERSION() \
+virtual bool GetAsAny(wxAny* any) const; \
+static wxVariantData* VariantDataFactory(const wxAny& any);
+
+#define _REGISTER_WXANY_CONVERSION(T, CLASSNAME, FUNC) \
+static wxAnyToVariantRegistrationImpl<T> \
+    gs_##CLASSNAME##AnyToVariantRegistration = \
+    wxAnyToVariantRegistrationImpl<T>(&FUNC);
+
+#define REGISTER_WXANY_CONVERSION(T, CLASSNAME) \
+_REGISTER_WXANY_CONVERSION(T, CLASSNAME, CLASSNAME::VariantDataFactory)
+
+#define IMPLEMENT_TRIVIAL_WXANY_CONVERSION(T, CLASSNAME) \
+bool CLASSNAME::GetAsAny(wxAny* any) const \
+{ \
+    *any = m_value; \
+    return true; \
+} \
+wxVariantData* CLASSNAME::VariantDataFactory(const wxAny& any) \
+{ \
+    return new CLASSNAME(wxANY_AS(any, T)); \
+} \
+REGISTER_WXANY_CONVERSION(T, CLASSNAME)
+
+// This is needed for wxVariantList conversion
+WX_DECLARE_LIST_WITH_DECL(wxAny, wxAnyList, class WXDLLIMPEXP_BASE);
+
+#else // if !wxUSE_ANY
+
+#define DECLARE_WXANY_CONVERSION()
+#define REGISTER_WXANY_CONVERSION(T, CLASSNAME)
+#define IMPLEMENT_TRIVIAL_WXANY_CONVERSION(T, CLASSNAME)
+
+#endif // wxUSE_ANY/!wxUSE_ANY
+

 
 #define DECLARE_VARIANT_OBJECT(classname) \
 
 #define DECLARE_VARIANT_OBJECT(classname) \

-    DECLARE_VARIANT_OBJECT_EXPORTED(classname,EMPTY_PARAMETER_VALUE)
+    DECLARE_VARIANT_OBJECT_EXPORTED(classname, wxEMPTY_PARAMETER_VALUE)

 
 #define DECLARE_VARIANT_OBJECT_EXPORTED(classname,expdecl) \
 
 #define DECLARE_VARIANT_OBJECT_EXPORTED(classname,expdecl) \

-classname& expdecl operator << ( classname &object, const wxVariant &variant ); \
-wxVariant& expdecl operator << ( wxVariant &variant, const classname &object );
+expdecl classname& operator << ( classname &object, const wxVariant &variant ); \
+expdecl wxVariant& operator << ( wxVariant &variant, const classname &object );

 
 #define IMPLEMENT_VARIANT_OBJECT(classname) \
 
 #define IMPLEMENT_VARIANT_OBJECT(classname) \

-    IMPLEMENT_VARIANT_OBJECT_EXPORTED(classname,EMPTY_PARAMETER_VALUE)
+    IMPLEMENT_VARIANT_OBJECT_EXPORTED(classname, wxEMPTY_PARAMETER_VALUE)

 
 

-#define IMPLEMENT_VARIANT_OBJECT_EXPORTED(classname,expdecl) \
+#define IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,expdecl) \

 class classname##VariantData: public wxVariantData \
 { \
 public:\
 class classname##VariantData: public wxVariantData \
 { \
 public:\


@@ -346,24 +498,13 @@ public:\
     virtual wxString GetType() const; \
     virtual wxClassInfo* GetValueClassInfo(); \
 \
     virtual wxString GetType() const; \
     virtual wxClassInfo* GetValueClassInfo(); \
 \

+    virtual wxVariantData* Clone() const { return new classname##VariantData(m_value); } \
+\
+    DECLARE_WXANY_CONVERSION() \

 protected:\
     classname m_value; \
 protected:\
     classname m_value; \

-\
-private: \
-    DECLARE_CLASS(classname##VariantData) \

 };\
 \
 };\
 \

-IMPLEMENT_CLASS(classname##VariantData, wxVariantData)\
-\
-bool classname##VariantData::Eq(wxVariantData& data) const \
-{\
-    wxASSERT( wxIsKindOf((&data), classname##VariantData) );\
-\
-    classname##VariantData & otherData = (classname##VariantData &) data;\
-\
-    return (otherData.m_value == m_value);\
-}\
-\

 wxString classname##VariantData::GetType() const\
 {\
     return m_value.GetClassInfo()->GetClassName();\
 wxString classname##VariantData::GetType() const\
 {\
     return m_value.GetClassInfo()->GetClassName();\


@@ -374,21 +515,54 @@ wxClassInfo* classname##VariantData::GetValueClassInfo()\
     return m_value.GetClassInfo();\
 }\
 \
     return m_value.GetClassInfo();\
 }\
 \

-classname& expdecl operator << ( classname &value, const wxVariant &variant )\
+expdecl classname& operator << ( classname &value, const wxVariant &variant )\

 {\
 {\

-    wxASSERT( wxIsKindOf( variant.GetData(), classname##VariantData ) );\
+    wxASSERT( variant.GetType() == #classname );\

     \
     classname##VariantData *data = (classname##VariantData*) variant.GetData();\
     value = data->GetValue();\
     return value;\
 }\
 \
     \
     classname##VariantData *data = (classname##VariantData*) variant.GetData();\
     value = data->GetValue();\
     return value;\
 }\
 \

-wxVariant& expdecl operator << ( wxVariant &variant, const classname &value )\
+expdecl wxVariant& operator << ( wxVariant &variant, const classname &value )\

 {\
     classname##VariantData *data = new classname##VariantData( value );\
     variant.SetData( data );\
     return variant;\
 {\
     classname##VariantData *data = new classname##VariantData( value );\
     variant.SetData( data );\
     return variant;\

-}
+} \
+IMPLEMENT_TRIVIAL_WXANY_CONVERSION(classname, classname##VariantData)
+
+// implements a wxVariantData-derived class using for the Eq() method the
+// operator== which must have been provided by "classname"
+#define IMPLEMENT_VARIANT_OBJECT_EXPORTED(classname,expdecl) \
+IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,wxEMPTY_PARAMETER_VALUE expdecl) \
+\
+bool classname##VariantData::Eq(wxVariantData& data) const \
+{\
+    wxASSERT( GetType() == data.GetType() );\
+\
+    classname##VariantData & otherData = (classname##VariantData &) data;\
+\
+    return otherData.m_value == m_value;\
+}\
+
+
+// implements a wxVariantData-derived class using for the Eq() method a shallow
+// comparison (through wxObject::IsSameAs function)
+#define IMPLEMENT_VARIANT_OBJECT_SHALLOWCMP(classname) \
+    IMPLEMENT_VARIANT_OBJECT_EXPORTED_SHALLOWCMP(classname, wxEMPTY_PARAMETER_VALUE)
+#define IMPLEMENT_VARIANT_OBJECT_EXPORTED_SHALLOWCMP(classname,expdecl) \
+IMPLEMENT_VARIANT_OBJECT_EXPORTED_NO_EQ(classname,wxEMPTY_PARAMETER_VALUE expdecl) \
+\
+bool classname##VariantData::Eq(wxVariantData& data) const \
+{\
+    wxASSERT( GetType() == data.GetType() );\
+\
+    classname##VariantData & otherData = (classname##VariantData &) data;\
+\
+    return (otherData.m_value.IsSameAs(m_value));\
+}\
+

 
 // Since we want type safety wxVariant we need to fetch and dynamic_cast
 // in a seemingly safe way so the compiler can check, so we define
 
 // Since we want type safety wxVariant we need to fetch and dynamic_cast
 // in a seemingly safe way so the compiler can check, so we define


@@ -398,6 +572,9 @@ wxVariant& expdecl operator << ( wxVariant &variant, const classname &value )\
     ((classname*)(var.IsValueKindOf(&classname::ms_classInfo) ?\
                   var.GetWxObjectPtr() : NULL));
 
     ((classname*)(var.IsValueKindOf(&classname::ms_classInfo) ?\
                   var.GetWxObjectPtr() : NULL));
 

+// Replacement for using wxDynamicCast on a wxVariantData object
+#define wxDynamicCastVariantData(data, classname) dynamic_cast<classname*>(data)
+

 extern wxVariant WXDLLIMPEXP_BASE wxNullVariant;
 
 #endif // wxUSE_VARIANT
 extern wxVariant WXDLLIMPEXP_BASE wxNullVariant;
 
 #endif // wxUSE_VARIANT