The TSPI_phoneSetButtonInfo function sets information about the specified button on the specified phone.
LONG TSPI_phoneSetButtonInfo(
DRV_REQUESTID dwRequestID,
HDRVPHONE hdPhone,
DWORD dwButtonLampID,
LPPHONEBUTTONINFO const lpButtonInfo
);
Returns the (positive) dwRequestID value if the function is completed asynchronously, or an error number if an error occurs. The lResult actual parameter of the corresponding ASYNC_COMPLETION is zero if the function succeeds or it is an error number if an error occurs. Possible return values are as follows:
PHONEERR_INVALPHONEHANDLE, PHONEERR_RESOURCEUNAVAIL, PHONEERR_INVALBUTTONLAMPID, PHONEERR_OPERATIONFAILED, PHONEERR_NOMEM, PHONEERR_OPERATIONUNAVAIL.
This function sets the meaning and associated descriptive text of a phone's buttons.
ASYNC_COMPLETION, PHONEBUTTONINFO, PHONECAPS, TSPI_phoneGetButtonInfo