Refactor wxDatePickerCtrl to derive from wxDateTimePickerCtrl.

No real changes, just refactor wxMSW wxDatePickerCtrl to allow sharing code
with the upcoming wxTimePickerCtrl class. Even less changes for the other
platforms where wxDateTimePickerCtrl is trivial.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@69222 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/datectrl.h

@@ -43,30 +43,21 @@ public:
                 const wxValidator& validator = wxDefaultValidator,
                 const wxString& name = wxDatePickerCtrlNameStr);
 
-    // set/get the date
+    // Override this one to add date-specific (and time-ignoring) checks.
     virtual void SetValue(const wxDateTime& dt);
     virtual wxDateTime GetValue() const;
 
-    // set/get the allowed valid range for the dates, if either/both of them
-    // are invalid, there is no corresponding limit and if neither is set
-    // GetRange() returns false
+    // Implement the base class pure virtuals.
     virtual void SetRange(const wxDateTime& dt1, const wxDateTime& dt2);
     virtual bool GetRange(wxDateTime *dt1, wxDateTime *dt2) const;
 
+    // Override MSW-specific functions used during control creation.
     virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
 
-    virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
-
-    // returns true if the platform should explicitly apply a theme border
-    virtual bool CanApplyThemeBorder() const { return false; }
-
 protected:
-    virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
-    virtual wxSize DoGetBestSize() const;
-
-    // the date currently shown by the control, may be invalid
-    wxDateTime m_date;
-
+    virtual wxLocaleInfo MSWGetFormat() const;
+    virtual bool MSWAllowsNone() const { return HasFlag(wxDP_ALLOWNONE); }
+    virtual bool MSWOnDateTimeChange(const tagNMDATETIMECHANGE& dtch);
 
     DECLARE_DYNAMIC_CLASS_NO_COPY(wxDatePickerCtrl)
 };