phoneSetData function (tapi.h)
The phoneSetData function downloads the information in the specified buffer to the opened phone device at the selected data identifier.
Syntax
LONG phoneSetData(
HPHONE hPhone,
DWORD dwDataID,
LPVOID const lpData,
DWORD dwSize
);
Parameters
hPhone
Handle to the open phone device. The application must be the owner of the phone.
dwDataID
Where in the phone device the buffer is to be downloaded.
lpData
Pointer to the memory location where the data is to be downloaded from.
dwSize
Size of the buffer, in bytes.
Return value
Returns a positive request identifier if the function is completed asynchronously or a negative error number if an error occurs. The dwParam2 parameter of the corresponding PHONE_REPLY message is zero if the function succeeds or it is a negative error number if an error occurs. Possible return values are:
PHONEERR_INVALPHONEHANDLE, PHONEERR_OPERATIONUNAVAIL, PHONEERR_NOTOWNER, PHONEERR_NOMEM, PHONEERR_INVALDATAID, PHONEERR_RESOURCEUNAVAIL, PHONEERR_INVALPHONESTATE, PHONEERR_OPERATIONFAILED, PHONEERR_INVALPOINTER, PHONEERR_UNINITIALIZED.
Remarks
The phoneSetData function downloads a maximum of dwSize bytes from lpData to the phone device. The format of the data, its meaning to the phone device, and the meaning of the data identifier are service provider-specific. The data in the buffer or the selection of a data identifier may act as commands to the phone device.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | tapi.h |
| Library | Tapi32.lib |
| DLL | Tapi32.dll |