|
Purpose |
Disconnect the current printer device. |
|
Syntax |
LPRINT CLOSE |
|
Remarks |
LPRINT CLOSE detaches the currently selected printer connection (established with the LPRINT ATTACH statement) from LPRINT operations, allowing the spooler subsystem to commence print operations. Once a connection is closed, LPRINT$ will return an empty printer device name string until a new connection is established. LPRINT CLOSE is equivalent to using LPRINT ATTACH with an empty printer device name string. |
|
Restrictions |
LPRINT CLOSE is an essential step in the print process. To ensure the printer device is available to other applications, printers should always be closed when not in use. Failing to close a connection may cause significant delays before printing commences. In some cases, some or all of the print data may be lost. |
|
See also |
LPRINT, LPRINT ATTACH, LPRINT FLUSH, LPRINT FORMFEED, LPRINT$, XPRINT, XPRINT ATTACH |
|
Example |
' Typical LPRINT printing strategy ERRCLEAR LPRINT ATTACH "LPT2" ' Use LPT2 device IF ISTRUE ERR OR ISFALSE LEN(LPRINT$) THEN LPRINT "This is your line-printer talking" LPRINT FORMFEED ' Issue a formfeed LPRINT FLUSH ' flush the buffer LPRINT CLOSE ' detach the printer END IF |