savetostream()

dst

hi
my code is :

---

report:=Tsream.create;
actionfrxReport.DesignReport;
actionfrxReport.SaveToStream(report);

---

and after the designer closes, I got a message

'Abstract error'

why?!

vlad_galaxy

TStream is abstract class
Use TMemoryStream

Andrew_Sh

dst написал:

hi
my code is :

---

report:=Tsream.create;
actionfrxReport.DesignReport;
actionfrxReport.SaveToStream(report);

---

and after the designer closes, I got a message

'Abstract error'

why?!

TStream - абстрактный класс, поэтому нельзя создавать экземпляры этого класса.

Вместо TStream используйте одного из наследников, например TMemoryStream.


TStream is the abstract base class type for stream objects that can read from or write to various kinds of storage media, such as disk files, dynamic memory, and so on.
....
As an abstract class, TStream cannot be instantiated.

dst

10Q
it is working with Tmemorystream