La prima compilazione era con il DevC++, mentre il Visual C++ 6 dice:

--------------------Configuration: Cpp1 - Win32 Debug--------------------
Compiling...
Cpp1.cpp
c:\documents and settings\federico\desktop\miodialogo.rc(2) : error C2146: syntax error : missing ';' before identifier 'DIALOG'
c:\documents and settings\federico\desktop\miodialogo.rc(2) : error C2501: 'MioDialogo' : missing storage-class or type specifiers
c:\documents and settings\federico\desktop\miodialogo.rc(2) : fatal error C1004: unexpected end of file found
Error executing cl.exe.

Cpp1.obj - 3 error(s), 0 warning(s)