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OLE for Retail POS Controls
5
SHARP
General OLE for Retail POS Control Model
OLE for Retail POS Controls adhere to the OLE Control specifications. They expose properties,
methods, and events to a containing Application. The controls are invisible at run time, and rely
exclusively upon the containing application for requests through methods and sometimes
properties. Responses are given to the application through method return values and parameters,
properties, and events.
The OLE for Retail POS software is implemented using the layers shown in the following diagram:
Architecture
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