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hhpCaptureBarcode(
PHHP_RAW_DECODE_MSG pDecodeMsg,
DWORD dwTimeout,
BOOL bWait
)
Parameter Description
pDecodeMsg Pointer to an HHP_RAW_DECODE_MSG structure if bWait is TRUE.
If bWait is FALSE, the parameter is ignored and should be NULL. (HHP_DECODE_MSG
will be passed to hhpGetAsyncMethods() call instead.) The function returns immediately,
and you are notified when symbols are decoded, an error occurs, or decoding times out
(no barcode) using the specified event notification method(s).
dwTimeout Maximum time (in milliseconds) to attempt to decode before declaring a no decode. A
value of CURRENT_DECODE_TIMEOUT specifies that the timeout is whatever is
currently set on the imager. A value of 0 indicates no timeout.
bWait If TRUE, wait for capture to complete before returning. If FALSE, one of the event
notification methods must be enabled to receive notification upon completion.
hhpConnect
This function opens a connection to an imager. The connection must be closed by calling hhpDisconnect(). The caller can verify
that the imager is connected by calling hhpEngineConnected().
Opens the selected communications port and establishes connection with the imager and starts the read data thread.
hhpConnect(
HHP_CONNECT_TYPE connectType,
PVOID pStruct
)
Parameter Description
connectType Describes the type of connection and hardware port, e.g., HHP_COM1, HHP_COM2,
HHP_COM3.
pStruct An optional structure that contains setup information for the hardware port, or NULL.
PHHP_SERIAL_PORT_CONFIG is used to configure a serial port connection.
hhpDisconnect
Closes the communications port and stops the read data thread.
hhpDisconnect(
void
)
hhpEnableDisableSymbology
Enables/disables an individual symbology or all symbologies.
hhpEnableDisableSymbology(
int nSymId,
BOOL bEnable
)
Parameter Description
nSymId One of the symbology enumerated types, e.g., SYM_CODE39, SYM_OCR, or SYM_ALL
to enable/disable all symbologies.
bEnable TRUE to enable symbology, FALSE to disable symbology.