while ( exttok.HasMoreTokens() )
{
wxString token = exttok.GetNextToken();
gtk_file_filter_add_pattern( filter, wxGTK_CONV_SYS( token ) );
while ( exttok.HasMoreTokens() )
{
wxString token = exttok.GetNextToken();
gtk_file_filter_add_pattern( filter, wxGTK_CONV_SYS( token ) );