// read/write
// ----------------------------------------------------------------------------
-bool wxFFile::ReadAll(wxString *str, wxMBConv& conv)
+bool wxFFile::ReadAll(wxString *str, const wxMBConv& conv)
{
wxCHECK_MSG( str, false, wxT("invalid parameter") );
wxCHECK_MSG( IsOpened(), false, wxT("can't read from closed file") );