INFO: PHONECAPS for Phones That Don't Report Button States
Article ID: 108308
Article Last Modified on 11/21/2006
APPLIES TO
- Microsoft Win32 Application Programming Interface, when used with:
- Microsoft Windows NT Server 4.0 Standard Edition
- Microsoft Windows NT Workstation 4.0 Developer Edition
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.
Additional query words: 1.00 3.10
Keywords: kbinfo kbtapi KB108308