+ bool IsChecked() const
+ {
+ wxASSERT_MSG( !Is3State(), wxT("Calling IsChecked() doesn't make sense for")
+ wxT(" a three state checkbox, Use Get3StateValue() instead") );
+
+ return GetValue();
+ }
+
+ wxCheckBoxState Get3StateValue() const
+ {
+ wxCheckBoxState state = DoGet3StateValue();
+
+ if ( state == wxCHK_UNDETERMINED && !Is3State() )
+ {
+ // Undetermined state with a 2-state checkbox??
+ wxFAIL_MSG( wxT("DoGet3StateValue() says the 2-state checkbox is ")
+ wxT("in an undetermined/third state") );
+
+ state = wxCHK_UNCHECKED;
+ }
+
+ return state;
+ }
+
+ void Set3StateValue(wxCheckBoxState state)
+ {
+ if ( state == wxCHK_UNDETERMINED && !Is3State() )
+ {
+ wxFAIL_MSG(wxT("Setting a 2-state checkbox to undetermined state"));
+ state = wxCHK_UNCHECKED;
+ }
+
+ DoSet3StateValue(state);
+ }
+
+ bool Is3State() const { return HasFlag(wxCHK_3STATE); }
+
+ bool Is3rdStateAllowedForUser() const
+ {
+ return HasFlag(wxCHK_ALLOW_3RD_STATE_FOR_USER);
+ }
+
+ virtual bool HasTransparentBackground() { return true; }
+
+ // wxCheckBox-specific processing after processing the update event
+ virtual void DoUpdateWindowUI(wxUpdateUIEvent& event)
+ {
+ wxControl::DoUpdateWindowUI(event);
+
+ if ( event.GetSetChecked() )
+ SetValue(event.GetChecked());
+ }
+
+protected:
+ virtual void DoSet3StateValue(wxCheckBoxState WXUNUSED(state)) { wxFAIL; }
+
+ virtual wxCheckBoxState DoGet3StateValue() const
+ {
+ wxFAIL;
+ return wxCHK_UNCHECKED;
+ }
+
+private:
+ DECLARE_NO_COPY_CLASS(wxCheckBoxBase)