About building a COM or COM+ client – PB Docs 125

About building a COM or COM+ client

A PowerBuilder application can act as a client to a COM server.
The server can be built using any COM-compliant application development tool
and it can run locally, on a remote computer as an in-process server, or
in COM+.

Configuring a client computer
to access a remote component

When a COM component is running on a remote computer, the
client computer needs to be able to access its methods transparently.
To do this, the client needs a local proxy DLL for the server and
it needs registry entries that identify the remote server.

If the component is installed in COM+, the COM+ Component
Services tool can create a Microsoft Windows Installer (MSI) file
that installs an application proxy on the client computer.

If the server is not installed in COM+, the client
and proxy files must be copied to the client and the server must
be configured to run in a surrogate process.

note.png Remote server name written to registry

If the COM server is moved to a different computer, the registry
entries on the client must be updated.


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