INFO: PHONECAPS for Phones That Don't Report Button States (108308)
The information in this article applies to:
- Microsoft Win32 Application Programming Interface (API), when used with:
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Workstation 4.0
This article was previously published under Q108308
1.00 3.10 4.00 | 4.00
WINDOWS | WINDOWS NT
kbprg
SUMMARY
A Windows Telephony application can call phoneGetDevCaps to inquire about a
phone's telephony capabilities. The resulting function in the TAPI
(Telephony application programming interface) service provider is
TSPI_phoneGetDevCaps. If the phone device does not report button states, it
is acceptable for the service provider to set the dwButtonModeSize/Offset
fields in the PHONECAPS structure to 0 (zero). Alternatively, the provider
could describe the button(s) as PHONEBUTTONMODE_DUMMY.
MORE INFORMATION
As a clarification, setting the dwButtonModeSize to 0 or describing the
buttons as PHONEBUTTON_DUMMY does not prohibit the service provider from
setting and using the dwButtonFunctionsSize and dwButtonFunctionsOffset
members of the PHONECAPS structure.
| Modification Type: | Minor | Last Reviewed: | 3/7/2005 |
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| Keywords: | kbinfo kbTAPI KB108308 |
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