Conditional directive to identify C++ Builder personalities

Question

I have a Delphi component which I want to install and have it available at the component palette in Delphi but not in C++ Builder. In BDS/RAD 2006 and above I can either have it

Answer 1

the BCB define is only set when Delphi is compiling with support for C++Builder (using the -J switches) You can use code like this to detect that someone is trying to build your package with C++ support and issue an error

{$IFDEF BCB}
{$Message Error 'This component is not usable in C++Builder'}
{$ENDIF BCB}