+// this macro must (unfortunately) be used in any class deriving from both
+// wxItemContainer and wxControl because otherwise there is ambiguity when
+// calling GetClientXXX() functions -- the compiler can't choose between the
+// two versions
+#define wxCONTROL_ITEMCONTAINER_CLIENTDATAOBJECT_RECAST \
+ void SetClientData(void *data) \
+ { wxControl::SetClientData(data); } \
+ void *GetClientData() const \
+ { return wxControl::GetClientData(); } \
+ void SetClientObject(wxClientData *data) \
+ { wxControl::SetClientObject(data); } \
+ wxClientData *GetClientObject() const \
+ { return wxControl::GetClientObject(); } \
+ void SetClientData(unsigned int n, void* clientData) \
+ { wxItemContainer::SetClientData(n, clientData); } \
+ void* GetClientData(unsigned int n) const \
+ { return wxItemContainer::GetClientData(n); } \
+ void SetClientObject(unsigned int n, wxClientData* clientData) \
+ { wxItemContainer::SetClientObject(n, clientData); } \
+ wxClientData* GetClientObject(unsigned int n) const \
+ { return wxItemContainer::GetClientObject(n); }
+
+class WXDLLEXPORT wxControlWithItems : public wxControl, public wxItemContainer
+{
+public:
+ wxControlWithItems() { }
+ virtual ~wxControlWithItems();
+
+ // we have to redefine these functions here to avoid ambiguities in classes
+ // deriving from us which would arise otherwise because both base classses
+ // have the methods with the same names - hopefully, a smart compiler can
+ // optimize away these simple inline wrappers so we don't suffer much from
+ // this
+ wxCONTROL_ITEMCONTAINER_CLIENTDATAOBJECT_RECAST
+
+ // usually the controls like list/combo boxes have their own background
+ // colour
+ virtual bool ShouldInheritColours() const { return false; }
+
+protected:
+ // we can't compute our best size before the items are added to the control
+ // which is done after calling SetInitialBestSize() (it is called from the
+ // base class ctor and the items are added in the derived class ctor), so
+ // don't do anything at all here as our size will be changed later anyhow
+ //
+ // of course, all derived classes *must* call SetBestSize() from their
+ // ctors for this to work!
+ virtual void SetInitialBestSize(const wxSize& WXUNUSED(size)) { }
+
+private:
+ DECLARE_ABSTRACT_CLASS(wxControlWithItems)
+ DECLARE_NO_COPY_CLASS(wxControlWithItems)
+};
+
+
+// ----------------------------------------------------------------------------
+// inline functions
+// ----------------------------------------------------------------------------