Paxar Gold 6037EX manual N O p e n S c a n n e r

s c n O p e n S c a n n e r

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 directs the serial port to the scanner, making external RS-232 communications unavailable (unlike scnOpenScannerShared) until the application disables the scanner with scnCloseScanner. There may be a slight delay when enabling the scanner for the software to determine the scanner type being used.

Because the scanner takes over the serial communications port, the application should disable the scanner immediately before using the port for serial communications and enable it immediately afterwards. When possible, the application should use scnOpenScannerShared to avoid processing delays (enabling and disabling the scanner repeatedly).

scnOpenScanner also saves the serial port’s configuration (baud, parity, data bits, stop bits) to restore when the application disables the scanner. The application must enable the scanner before configuring it.

The application must call this function before it calls any other scanner function (unless it uses scnOpenScannerShared).

Syntax

short far scnOpenScanner(void);

Function Reference 4-67