Paxar Gold 6037EX, Programmer'S Manual

Page: 105 / 230

Function Reference 4-69
s c n O p e n S c a n n e r S h a r e d
Description
Enables the scanner and sets the configuration values to the
defaults. Be sure to enable the scanner only when it is already
disabled.
Because this function resets the
configuration values to the defaults, you
must configure the scanner every time you
enable it.
This function allows the serial port to be shared for scanning
and serial communications (unlike scnOpenScanner). There
may be a slight delay when enabling the scanner for the
software to determine the scanner type being used.
Because this function allows the serial port to be shared,
application does not need to enable and disable the scanner
repeatedly to free the serial port for RS-232 communications. It
can enable the scanner at the beginning of processing and
disable the scanner at the end of processing.
Using this function has the benefit of eliminating processing
delays (enabling and disabling the scanner repeatedly), making
the application run faster.
The application must call this function before
it calls any other scanner function (unless it
uses scnOpenScanner).
Syntax
short far scnOpenScannerShared(void);
Parameters
None