Windows 3.1 Device Drivers (ddag31qh.hlp) (Table of Contents; Topic list)
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About the Communications Driver
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The communication driver is a dynamic-link library (DLL) containing
functions that support opening, reading from, and writing to communications
devices. Although the communication driver exports several functions,
Windows-based applications do not directly call these functions. Instead,
the applications call functions in the USER module, such as the OpenComm
function, which in turn call the communications driver.
 
Unlike other Windows-based drivers, the communications driver does not
include the Enable and Disable functions, although it does include the WEP
function.
 
 
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