Added wxBORDER_THEME, wxWindow::GetDefaultBorderForControl(), wxWindow::CanApplyThemeBorder().

wxTextCtrl and wxSearchCtrl now get the correct border on wxMSW, and the wxRichTextCtrl sample
also now demonstrates correct borders.



git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47927 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/window.h

@@ -433,6 +433,11 @@ public:
     // check if a native double-buffering applies for this window
     virtual bool IsDoubleBuffered() const;
 
+    // this allows you to implement standard control borders without
+    // repeating the code in different classes that are not derived from
+    // wxControl
+    virtual wxBorder GetDefaultBorderForControl() const;
+
     // synthesize a wxEVT_LEAVE_WINDOW event and set m_mouseInWindow to false
     void GenerateMouseLeave();