CODEWITHSUNDEEP
c++packagec++builderwin64bpl
Zio3D
Zio3D

Reputation: 1

How to register Win32 and Win64 component in Embarcadero C++Builder 11 Alexandria

I can't find information on how to register a component (a Package) in Embarcadero C++Builder 11 Alexandria Professional, to be used for both 32-bit and 64-bit projects.

Some informations that I found is in https://docwiki.embarcadero.com/RADStudio/Alexandria/en/64-bit_Windows_Application_Development.

I saw that for Delphi, you have to use the following syntax (which I found in a 2014 forum):

unit agnosticu;

interface

uses
  System.Classes;

type
  TAgnosticComponent = class(TComponent)
  end;

  [ComponentPlatforms(pidWin32)]
  TWin32Component = class(TComponent)
  end;

  [ComponentPlatforms(pidWin64)]
  TWin64Component = class(TComponent)
  end;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('Test', [TAgnosticComponent, TWin32Component, TWin64Component]);
end;

end.

In C++, I seem to have understood that I need to modify the following section of code:

namespace Mycomponent
{
    void __fastcall PACKAGE Register()
    {
         TComponentClass classes[1] = {__classid(TMyComponent)};
         RegisterComponents(L"MyCategory", classes, 0);
    }
}

But regarding C++, I don't find any information on this.

I seem to understand that I should use the ComponentPlatformsAttribute class and the pidWin32 and pidWin64 attributes, but I don't know how.

Or, with C++, is the only solution to modify the PLATFORMTARGETS variable of the RC_DATA resource?

Can anyone help me?

Upvotes: 0

Views: 456

Answers (1)

Zio3D
Zio3D

Reputation: 1

Doing some tests I realized that it is not necessary to make any changes to the original code. The presence of the 64-bit Platform is enough to have the variable 'PLATFORMTARGETS' of the .BPL file (of the 32-bit version) set to the value 3, i.e. package compatible with both 32 and 64 bits (instead of the previous value 1 corresponding to only 32 bit).

Upvotes: 0

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