C++ Builder E2303 Type name expected - c++builder

Question

I am attempting to use the HP APDK with C++ Builder in RAD Studio XE5. I need to derive a class PlatformServices (or any name of my choosing) from HP's base class SystemServices. Here is my header PlatformServices.h:
/***************************************************************************\
APDK Platform Services
\***************************************************************************/
#ifndef _H_PLATFORMSERVICES
#define _H_PLATFORMSERVICES
#include "header.h" // HP APDK General Header
// class SystemServices {
// };
class PlatformServices : public SystemServices {
~PlatformServices ();
PlatformServices ();
};
#endif
Compiled as-is, I get the error:
[bcc32 Error] PlatformServices.h(13): E2303 Type name expected
Full parser context
PlatformServices.cpp(5): #include PlatformServices.h
PlatformServices.h(13): class PlatformServices
But if I comment out the #include and uncomment the definition for an empty class named SystemServices, the code compiles without error.
I can preprocess the code as-is (in Project Manager, right click on PlatformServices and select Preprocess) and I can see that the #include defines a well formed SystemServices class.
I've also disabled pre-compiled headers.
This seems like a compiler error, but it's a poor workman who blames his tools. I just can't believe C++ Builder would choke on something this basic, yet I can't see what I'm doing wrong. Help!
P.S. I've posted the full code and project files at: https://www.dropbox.com/s/sn1377y59r3idtz/apdk.zip

Answer 1

SystemServices is declared in the apdk namespace, so you need to specify that in your code, either directly:
class PlatformServices : public apdk::SystemServices
Or with a using namespace statement:
using namespace apdk;
class PlatformServices : public SystemServices