The latest release of Ole for Process Control (OPC) is the Version 2.0 of the OPC Data Access Specification published in November 1998. With this new version OPC now provides an Automation Interface then support for Microsoft Visual Basic and any product using Visual Basic for Applications.
The official Web Sites for OPC is OPC Foundation
. There is also an European site at OPC Europe and a Japanese one at OPC Council Japan.
The Manufacturing pages at the Microsoft Industry Site is another major Site for information related to OPC. Because OPC is based on COM, DCOM the Microsoft interest in this area cannot be ignored. The new Microsoft announcement about Windows® DNA-M, an architectural framework for manufacturing based on DNA is another good reason to visit these pages.
Also look at our DNA-M.
Related Sites
IUnknown
Parent interface of all interfaces. Contain AddRef
, Release and QueryInterface
IClassFactory
: The way to create new objects
How to recognize the various exchange format
IDispatch
: A self described generic interface for all programming languages. It is the base of OLE automation. Its essential benefit is to carry together the functionality, the formal description of the interface and even the documentation on it.
| On Client Side (Container) |
IOleClientSite
|
|
IAdviseSink
|
| On Server Side |
IOleObject
|
|
IDataObject
|
Inplace Activation
OLE for Design and Manufacturing 2
COM is now used in the CADCAM area.
COM and STEP.
This is still talks and proposal but it might lead to important results for the CADCAM industry.
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