s c n G e t c h e
Description
Retrieves a character from the scanner buffer and echoes it to the display. If the scanner buffer is empty, this function activates the scanner to let the operator scan another bar code. This function works with each scanner.
This function tracks the characters in the bar code internally. For example, after a scan, a call to scnGetche reads the first character. Subsequent calls to scnGetche read the subsequent characters in the bar code. For example, the second call reads the second character, the third call reads the third character, etc.
Use scnGetch to retrieve characters without echoing them to the display.
Syntax
short far scnGetche(void);
Parameters
None
Return Values
-2 Decoding fault. The scanner scanned the bar code, but the printer could not decode it.
-4 Checksum error.
-9 Scanner is disabled.
-10
