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Mastering PowerBuilder In-Process
Versus Out-Process
When
OLE Automation is implemented as In-Process, OLE Server
uses OLE Client Application's memory; OLE Server is implemented
as DLL (Dynamic Linked Library). A Dynamic Linked Library doesn't
have its own stack, instead it uses the application's memory that
is called. On the other hand, Out-Process OLE Automation doesn't
use OLE Client application's memory, instead, it uses its own
memory. The implementation is typically done with EXE
files. This is more complex than In-Process automation, since the
implementation should take care of communication between OLE
Server and OLE Client. Well, COM specification hides this complexity
from the OLE Server/OLE Client developer's. You can also
implement Network Out-Process OLE Automation, however, you
need to wait till Microsoft implements Distributed OLE.
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