vert textctrl scrolling starts to work after tons of fixes to wxTextCtrl and

wxScrolledWindow (to better respect target window rect)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxUNIVERSAL@8663 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/univ/textctrl.h

@@ -260,6 +260,14 @@ protected:
     // get the logical text width (accounting for scrolling)
     wxCoord GetTotalWidth() const;
 
+    // the text area is the part of the window in which the text can be
+    // displayed, i.e. part of it inside the margins and the real text area is
+    // the area in which the text *is* currently displayed: for example, in the
+    // multiline control case the text area can have extra space at the bottom
+    // which is not tall enough for another line and which is then not included
+    // into the real text area
+    wxRect GetRealTextArea() const;
+
     // refresh the text in the given (in logical coords) rect
     void RefreshTextRect(wxRect& rect);