Appendix D - Asynchronous Event Definitions

Event Code Name	Return Value	Description
TD42_ASYNCCHSTATUS	0x00D0	Asynchronous channel status notification
TD42_ASYNCCLOSEFEATSESSION	0x00D5	Asynchronous close of feature session (NS only)
TD42_ASYNCDISP	0x00DA	Asynchronous display notification
TD42_ASYNCLINE	0x00DB	Asynchronous line status change notification
TD42_SOFTKEYINPUT	0x00D2	Soft key pressed (NS only)
TDX_ERROR	0x0089	Asynchronous error message

When using the above event data in sample applications, the following information is applicable:

For TD42_ASYNCCHSTATUS: sr_getevtdatap( ) returns a pointer to an unsigned short containing the status of the channel.

For TD42_ASYNCDISP: sr_getevtdatap( ) returns a pointer to a null-terminated buffer containing the display. sr_getevtlen( ) returns the length of the data.

For TD42_ASYNCLINE: sr_getevtdatap( ) returns a pointer to a LINEINDICATOR structure containing the status of the indicator. The structure is defined in the d42lib.h and contains two members: line (the line #) and status (the status)

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