🚀 go-pugleaf

I've been having big troubles exporting objects across process
boundaries. I've posted about some of the problems I've run into, and
gotten mail/replies saying "gee, I wrote an in-process server, and
everything worked as documented". Has anyone had any luck writing an
out-of-process server?

The latest problem in a demo form:

I created a TComObject, with a "Class_NewComObj" GUID and an IPersist
interface. I can do the code below in an button-click handler on a form
in the server - but when I run it in a client in a different exe, the
"Assert(Assigned(Persist));" fails.

var
  Unknown:   IUnknown;
  Persist:   IPersist;
  ClsID:     TCLSID;
begin
  Unknown := CreateComObject(Class_NewComObj);
  Assert(Assigned(Unknown));

  Unknown.QueryInterface(IPersist, Persist);
  Assert(Assigned(Persist));

  Persist.GetClassID(ClsID);

I get similar results when I use a class factory - I can get an
IUnknown, but not an IPersist. I've put ShowMessage statements into the
object's Initialize and Destroy routines, so I know that
CreateComObject() is creating the right object, it's 'just' that
QueryInterface() doesn't seem to be working properly across process
boundaries.


-- 

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