How do I solve an unresolved external when using C++ Builder packages (with TForm based classes)?
- by José Renato
Hi,
i'm working with Bulder C++ 6 and 2010, and i'm having this problem:
http://stackoverflow.com/questions/2727001/how-do-i-solve-an-unresolved-external-when-using-c-builder-packages
But, the difference here is that i'm using a FORM compiled inside the package, so, take the example above, but in addition i'm including a form classe, like TForm2:
class TForm2 : public TForm
{
__published: // IDE-managed Components
TButton *Button1;
void __fastcall Button1Click(TObject *Sender);
private: // User declarations
public: // User declarations
__fastcall TForm2(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm2 *Form2;
//---------------------------------------------------------------------------
So, when i'm trying to use this class in any project the linker stops and give me the unresolved external error.
When i got that error i tried to include the word PACKAGE, like this:
class PACKAGE TForm2
But, when i tried to compile the PACKAGE, the compiler stops with the unresolved external error:
[ILINK32 Error] Error: Unresolved external '__fastcall Forms::TCustomForm::~TCustomForm()' referenced from c:\projects\UNIT2.OBJ
How can i solve this problem?
PS.: Sorry about the bad English.
