Iadc Functions; Iadc::cancelreadrequest - Intermec 700 Series User Manual

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IADC Functions

IADC functions provide ADC data in an input device independent manner. This
interface can receive bar code data, RFID data, and other ADC data from data
collection engines, such as a bar code scanner. Use IADC functions if bar code
specifics such as symbology are not important to the application.
IADC functions are the following. IADC.H is the header file and ITCUUID.LIB
contains the IID_IADC Interface GUID value used to obtain the interface.
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IADC::CancelReadRequest

This function cancels a pending Read() request. This call can be made on a sepa-
rate thread as a Read() or on the same thread. On a separate thread, the func-
tion is useful in unblocking a blocked Read() so that other operations can be per-
formed. On the same thread, this function is useful in stopping data from being
collected on behalf of a Read Ahead Client.
Syntax:
Parameters:
Return Values:
Remarks:
See Also:
6-12 700 Series Color Mobile Computer User's Manual
IADC::CancelReadRequest (page 6-12)
IADC::Initialize (page 6-13)
IADC::QueryAttribute (page 6-14)
IADC::QueryData (page 6-14)
IADC::Read (page 6-15)
IADC::SetAttribute (page 6-16)
HRESULT IADC::CancelReadRequest( BOOL FlushBufferedData,
WORD *pwTotalDiscardedMessages, DWORD *pdwTotalDiscardedBytes );
FlushBufferedData
pwTotalDiscardedMessages [in/out]
pdwTotalDiscardedBytes
HRESULT that indicates success or failure.
The return value indicates whether a read was pending.
IADC::Initialize
IADC::QueryAttribute
IADC::QueryData
IADC::Read
IADC::SetAttribute
[in] True Flush and discard all already
buffered data.
False Do not discard data, data will be
returned on the next read call.
Total number of discarded buffered
labels or tags.
Total number of discarded bytes.
SECTION 6