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  • Using an external library: RXTX
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Stored procedures
Retrieves the number of pending bytes in the input buffer of a specified serial port or infrared port.
WEBDEV - Server code This function returns information regarding the server.
Versions 16 and later
WINDEVJava This function is now available for the Java applications.
New in version 16
WINDEVJava This function is now available for the Java applications.
WINDEVJava This function is now available for the Java applications.
Notes:
  • This function cannot be used with a parallel port.
  • Versions 16 and later
    Java The management of infrared ports is not available in Java.
    New in version 16
    Java The management of infrared ports is not available in Java.
    Java The management of infrared ports is not available in Java.
Example
// The port is opened. Retrieves the number of pending bytes
// in the input buffer of COM4 and read them.
Number is int
MessageRead is string
Number = sInEntryQueue(4)
MessageRead = sRead(4, Number)
// Equivalent to: MessageRead = sRead(4, sInEntryQueue(4))
Syntax
<Result> = sInEntryQueue(<Port Number>)
<Result>: Integer
  • Number of pending bytes in the input buffer of the specified port,
  • 0 if the function failed. The ErrorOccurred variable is set to True if an error occurred on the port (parity bit for example). The error details are returned by ErrorInfo.
Windows Mobile Reminder: In UNICODE, each character occupies two memory bytes.
<Port Number>: Integer
Port number to use:
  • Number of serial port: 1, 2, 3, ... 32 for COM1, COM2, COM3, ... COM32.
  • Number of the infrared port: 1, 2, 3, ... 32 for IR1, IR2, IR3, ... IR32.
    Versions 16 and later
    Java The management of infrared ports is not available in Java.
    New in version 16
    Java The management of infrared ports is not available in Java.
    Java The management of infrared ports is not available in Java.
  • Port number returned by sOpen (if this function was called with a port name).
Remarks
Versions 16 and later
Java

Using an external library: RXTX

In Java, the use of functions for handling the serial and parallel ports (sOpen, sWrite, sRead, ...) requires the presence of an external library: RXTX.
This library includes a Jar archive and one or more native libraries that depend on the operating system on which the application is run. To use these functions:
  • the Jar archive (RXTXComm.jar) must:
    • be found in the same directory as the Java application generated by WINDEV,
    • be found in the execution classpath of the application,
    • be directly included in the generated application (from the wizard for Java generation).
  • the native libraries corresponding to the operating system on which the application is run must be found:
    • in the same directory as the Java application generated by WINDEV,
    • in the path of the application libraries (librarypath).
The RXTX library and its documentation can be downloaded from: http://users.frii.com/jarvi/rxtx/index.html (link valid at the time this documentation was published).
Caution: The management of infrared ports is not available in Java.
New in version 16
Java

Using an external library: RXTX

In Java, the use of functions for handling the serial and parallel ports (sOpen, sWrite, sRead, ...) requires the presence of an external library: RXTX.
This library includes a Jar archive and one or more native libraries that depend on the operating system on which the application is run. To use these functions:
  • the Jar archive (RXTXComm.jar) must:
    • be found in the same directory as the Java application generated by WINDEV,
    • be found in the execution classpath of the application,
    • be directly included in the generated application (from the wizard for Java generation).
  • the native libraries corresponding to the operating system on which the application is run must be found:
    • in the same directory as the Java application generated by WINDEV,
    • in the path of the application libraries (librarypath).
The RXTX library and its documentation can be downloaded from: http://users.frii.com/jarvi/rxtx/index.html (link valid at the time this documentation was published).
Caution: The management of infrared ports is not available in Java.
Java

Using an external library: RXTX

In Java, the use of functions for handling the serial and parallel ports (sOpen, sWrite, sRead, ...) requires the presence of an external library: RXTX.
This library includes a Jar archive and one or more native libraries that depend on the operating system on which the application is run. To use these functions:
  • the Jar archive (RXTXComm.jar) must:
    • be found in the same directory as the Java application generated by WINDEV,
    • be found in the execution classpath of the application,
    • be directly included in the generated application (from the wizard for Java generation).
  • the native libraries corresponding to the operating system on which the application is run must be found:
    • in the same directory as the Java application generated by WINDEV,
    • in the path of the application libraries (librarypath).
The RXTX library and its documentation can be downloaded from: http://users.frii.com/jarvi/rxtx/index.html (link valid at the time this documentation was published).
Caution: The management of infrared ports is not available in Java.
Components
WINDEVWEBDEV - Server codeReports and Queries wd230com.dll
Windows Mobile wp230com.dll
Java wd230java.jar
Minimum required version
  • Version 9
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