RFGetLastError Method

This member of RFBarcode Object is supported on iOS, Windows Mobile, Windows CE, Palm, and DOS.

The RFGetLastError method returns the value of the last generated error.

VB

dError = object.RFGetLastError()

VC++

HRESULT hr = object->RFGetLastError(DWORD *dError);

Return Value

dError

The numeric DWORD value of the last generated function error.

Remarks

Whenever a function error occurs, an error value is generated. You may use RFGetLastError to return the value of the error. The generated errors are listed below:

WLNOERROR

No error returned from function call.

WLCOMMERROR

RF network communication error

WLMEMORYERROR

Memory allocation error

WLNOTINITIALIZED

RF object is improperly initialized.

WLREQUESTFAIL

Input request string format failure

WLINVALIDPARAMS

Invalid parameter(s) for function call

WLINVALIDRETURN

Invalid return designator for function call

WLFUNCTIONFAILED

RF device returned a failure code for the function

WLBCPARSEERROR

Failure parsing barcode file

WLBCADDERROR

Failed to add barcode to object

WLBCCLEARERROR

Failed to clear barcode list

WLBARCODELIMITEXCEEDED

Too many barcodes for configuration file

WLTONEADDERROR

Failed to add tone to object

WLTONECLEARERROR

Failed to clear tone list

WLIOQUEUEERROR

IO queue is empty

WLNOINPUTTYPE

Unable to determine input type

WLPORTTIMEOUT

Auxiliary port timeout

WLDTOUTOFSYNC

Terminal date/time out of sync by more than five seconds

See the Constant Values for the numeric equates returned by the function.

Example

See the RFBarcode Samples.

 


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