How add Delphi XE2 64bit support to a simple Delphi XE2 32bit VCL component?

Question

I need convert a VCL component from 32bit to 64bit (Delphi XE2). Now infact I can install it only if I select \"32bit Platform\", if I select \"64bit Platform\" I can compil

Answer 1

If you mean "install it into the IDE", the simple answer is that you cannot.

The IDE is a 32-bit application and is not designed to host 64-bit DLL's. Any components or plug-ins must be compiled for 32-bit in order to work with the IDE itself.

64-bit support in a component is for runtime support only, not design-time.