Serial and parallel port management functions

ONLINE HELP
WINDEV, WEBDEV AND WINDEV MOBILE

Version:

Home | Sign in | English

Help

WLanguage

WLanguage functions

Standard functions

Windows management functions

Serial/Parallel Ports functions

Serial and parallel port management functions

Related examples

See also

Serial and parallel port management functions


sClose	Closes the specified serial port, parallel port or infrared port.
sEndEvent	Disables the detection of an event on a serial port.
sEscape	Runs different functions that directly affect the bits of serial port, parallel port or infrared port, independently of the communication protocol.
sEvent	Branches an event on a serial port.
sInEntryQueue	Retrieves the number of pending bytes in the input buffer of a specified serial port or infrared port.
sInExitQueue	Retrieves the number of bytes waiting to be transferred in the output buffer of the specified serial port or parallel port.
sListPort	Returns the list of serial and parallel ports on the computer.
sOpen	Opens and initializes: a serial port. a parallel port. an infrared port.
sParameter	Defines or modifies the parameters for configuring the specified serial port, parallel port or infrared port.
sRead	Reads a character string in the entry buffer of the specified serial port.
sWrite	Writes a character string to the output buffer of the specified serial port, parallel port or infrared port.

Other linked functions:


sComputeCrc16	Checks a character string before and after transmission between WINDEV applications and WEBDEVsites.
sComputeCrc32	Calculates the Cyclical Redundancy Check (CRC) of buffer.

Related Examples:

Unit examples (WINDEV): Direct print

[ + ] Direct print on a dot-matrix printer with the WLanguage functions.
The following topics are presented in this example:
1/ the functions for managing the communication ports
2/ sending sequences to a printer.

This example powered by WINDEV is used to directly print on the dot-matrix printer connected to the parallel port of your choice.
This example is using the WLanguage "sWrite" function.
This feature is very useful for the applications exploiting cash registers.
This example is not suited for a laser printer ; in this case, we recommend that you use the report editor of WINDEV.