made Update() virtual

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26877 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/progdlg.tex

@@ -75,7 +75,7 @@ ABORT.
 
 \membersection{wxProgressDialog::Update}\label{wxprogressdialogupdate}
 
-\func{bool}{Update}{
+\func{virtual bool}{Update}{
   \param{int }{value},\rtfsp
   \param{const wxString\& }{newmsg = ""}}
 

include/wx/generic/progdlgg.h

@@ -55,7 +55,7 @@ public:
        @param newmsg if used, new message to display
        @returns true if ABORT button has not been pressed
    */
-   bool Update(int value, const wxString& newmsg = wxT(""));
+   virtual bool Update(int value, const wxString& newmsg = wxT(""));
 
    /* Can be called to continue after the cancel button has been pressed, but
        the program decided to continue the operation (e.g., user didn't