Subj : dialog boxes To : borland.public.cpp.borlandcpp From : "Rob C." Date : Tue Sep 30 2003 11:56 am platform Win32 Here is code fragment: void TDrawWindow::EvRButtonDown(uint, TPoint&) { TDialog dialog1( GetApplication()->GetMainWindow(), IDD_DIALOG1 ); dialog1.Execute(); } Here are errors: Info :Making... Info :Making... Info :Compiling C:\BC5\EXAMPLES\OWL\TUTORIAL\step01.cpp Error: step01.cpp(53,67):Undefined symbol 'IDD_DIALOG1' [*.rc is included in my project, and I know 'IDD_DIALOG1' is in it because i can retrieve it to change it.] .