lineGetCallStatus
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4/8/2010
This function returns the current status of the specified call.
Syntax
LONG WINAPI lineGetCallStatus(
HCALL hCall,
LPLINECALLSTATUS lpCallStatus
);
Parameters
- hCall
Handle to the call to be queried. The call state of hCall can be any state.
- lpCallStatus
Pointer to a variably sized data structure of type LINECALLSTATUS. Upon successful completion of the request, this structure is filled with call status information. Prior to calling lineGetCallStatus, the application should set the dwTotalSize member of this structure to indicate the amount of memory available to TAPI for returning information.
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 |
|---|---|
LINEERR_INVALCALLHANDLE |
The handle to the call is invalid. |
LINEERR_RESOURCEUNAVAIL |
The resources are unavailable. |
LINEERR_INVALPOINTER |
The pointer is invalid. |
LINEERR_STRUCTURETOOSMALL |
The structure is too small. |
LINEERR_NOMEM |
Not enough memory is available. |
LINEERR_UNINITIALIZED |
A parameter is uninitialized. |
LINEERR_OPERATIONFAILED |
The operation failed. |
LINEERR_OPERATIONUNAVAIL |
The operation is unavailable. |
Remarks
The lineGetCallStatus function returns the dynamic status of a call, whereas the lineGetCallInfo function returns primarily static information about a call. Call status information includes the current call state, detailed mode information related to the call while in this state (if any), as well as a list of the available API functions the application can invoke on the call while the call is in this state. An application would typically be interested in requesting this information when it receives notification about a call state change by the LINE_CALLSTATE message.
Note
This function is for TAPI version 2.0 and later.
Requirements
| Header | tapi.h |
| Library | coredll.lib |
| Windows Embedded CE | Windows CE 1.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |