Re:Problem with properties that reference a component in another package in C++ Builder 6
I have posted the same error to this newsgroup some weeks ago. It makes
no difference between a trial version or a registered one, this is a problem
of the BCB6. I posted the problem to the Borland Quality Center (Report
number 3110) and got an answer from Stefan Hoffmeister (another customer)
that there exists an Update Pack 3, but I couldn't find it. It seems, this
Update
Pack 3 is only for the english version of BCB6, but I use the german
version.
I could avoid the "Access violation" using the base type TComponent* as
the property type and using get- and setfunctions to casting the type to
my ownerdefined type. Further I wrote a property editor in order to show
only components of my ownerdefined type in the drop-down list of the
object inspector.
"Neil Fortune" <n...@fasl.co.uk> schrieb im Newsbeitrag
news:3e2eea3d@newsgroups.borland.com...
Quote
> Hi,
> I have various components in lots of different packages some of which
> reference components in other packages. There were no problems under C++
> Builder 5 but I have just downloaded the trial version of C++ Builder 6
and
> re-created/re-compiled all my packages and now any component that
references
> a component in another package causes the following error in the IDE:
> "Access violation at address 40005982 in module 'rtl60.bpl'. Read
of
> address <some randow (low) address>"
> I've managed to re-create this behaviour as follows:
> 1) Create a package containing a component derrived from TComponent.
> 2) Create a package containing a component that has a published
property
> that refers to the component created in (1)
> 3) Install both packages and attempt to place the component created in
> (2) on a form.
> Here's the class definitions for the two components:
> --------[Component 1]------------------
> class PACKAGE TReferredComponent : public TComponent
> {
> private:
> protected:
> public:
> __fastcall TReferredComponent (TComponent* Owner);
> __published:
> };
> -----------------------------------------
> --------[Component 2]------------------
> class PACKAGE TTestComponent : public TComponent
> {
> private:
> TReferredComponent * FReferredComponent;
> protected:
> public:
> __fastcall TTestComponent (TComponent* Owner);
> __published:
> __property TReferredComponent * ReferredComponent = {
> read=FReferredComponent, write=FReferredComponent};
> };
> -----------------------------------------
> Thanx,
> Nel.
