Compatibility with OLE 1 and 16:32-Bit Interoperability

Note  In moving from OLE 1 to OLE 2, the following changes in terminology were made:

    The OLE 1 term  server application  has been changed to  object application. 

    The OLE 1 term  client application  has been changed to  container application. 

Compatibility implies that an OLE 1 client application can contain OLE 2 embedded and linked objects and that an OLE 1 server application can create objects to be embedded in and linked to by OLE 2 containers. OLE provides these capabilities by means of a built-in compatibility layer in the core code, which includes a set of functions for conversion.

Interoperability is not the same as OLE 1 to OLE 2 compatibility. Interoperability implies that a 16-bit OLE application can interact with a 32-bit application running on the same system. Interoperability between 16- and 32-bit implementations means that 16-bit and 32-bit implementations can call each other.