phoneGetStatusMessages (Compact 2013)

3/26/2014

This function returns which phone-state changes on the specified phone device generate a callback to the application.

Syntax

LONG WINAPI phoneGetStatusMessages(
  HPHONE hPhone,
  LPDWORD lpdwPhoneStates,
  LPDWORD lpdwButtonModes,
  LPDWORD lpdwButtonStates 
);

Parameters

• hPhone
  Handle to the open phone device to be monitored.

• lpdwPhoneStates
  Pointer to a DWORD holding zero, one or more of the PHONESTATE constants. These flags specify the set of phone status changes and events for which the application can receive notification messages. Monitoring can be individually enabled and disabled for:

• lpdwButtonModes
  Pointer to a DWORD containing flags that specify the set of phone-button modes for which the application can receive notification messages. This parameter uses zero, one or more of the PHONEBUTTONMODE constants.

• lpdwButtonStates
  Pointer to a DWORD that contains flags specifying the set of phone button state changes for which the application can receive notification messages. This parameter uses zero, one or more of the PHONEBUTTONSTATE constants.

Return Value

Returns zero if the request succeeds or a negative error number if an error occurs. The following table shows the return values for this function.

Value	Description
PHONEERR_INVALPHONEHANDLE	The handle to the open phone device is invalid.
PHONEERR_NOMEM	Not enough memory is available.
PHONEERR_INVALPOINTER	A pointer is invalid.
PHONEERR_RESOURCEUNAVAIL	The resources are unavailable.
PHONEERR_OPERATIONFAILED	The operation failed.
PHONEERR_UNINITIALIZED	A parameter is uninitialized.

Remarks

An application can use phoneGetStatusMessages to query the generation of the corresponding messages. Message generation can be controlled by phoneSetStatusMessages. All phone status messages are disabled by default.

Requirements

Header	tapi.h
Library	TAPI32.dll

See Also

Reference

TAPI Phone Device Functions
phoneGetDevCaps
phoneSetStatusMessages