MirOS Manual: XtAppAddInput(3), XtRemoveInput(3)


XtAppAddInput(3Xt)        XT FUNCTIONS         XtAppAddInput(3Xt)

NAME

     XtAppAddInput, XtRemoveInput - register and remove an input
     source

SYNTAX

     XtInputId XtAppAddInput(XtAppContext app_context, int
          source, XtPointer condition, XtInputCallbackProc proc,
          XtPointer client_data);

     void XtRemoveInput(XtInputId id);

ARGUMENTS

     app_context
               Specifies the application context that identifies
               the application.

     client_data
               Specifies the argument that is to be passed to the
               specified procedure when input is available.

     condition Specifies the mask that indicates a read, write,
               or exception condition or some operating system
               dependent condition.

     id        Specifies the ID returned from the corresponding
               XtAppAddInput call.

     proc      Specifies the procedure that is to be called when
               input is available.

     source    Specifies the source file descriptor on a UNIX-
               based system or other operating system dependent
               device specification.

DESCRIPTION

     The XtAppAddInput function registers with the Intrinsics
     read routine a new source of events, which is usually file
     input but can also be file output. Note that file should be
     loosely interpreted to mean any sink or source of data.
     XtAppAddInput also specifies the conditions under which the
     source can generate events. When input is pending on this
     source, the callback procedure is called.

     The legal values for the condition argument are operating-
     system dependent. On a UNIX-based system, the condition is
     some union of XtInputReadMask, XtInputWriteMask, and XtInpu-
     tExceptMask. The XtRemoveInput function causes the Intrin-
     sics read routine to stop watching for input from the input
     source.

SEE ALSO

     XtAppAddTimeOut(3Xt),XtAppAddSignal(3Xt)

XFree86                   Version 4.5.0                         1

XtAppAddInput(3Xt)        XT FUNCTIONS         XtAppAddInput(3Xt)

     X Toolkit Intrinsics - C Language Interface
     Xlib - C Language X Interface

BUGS

     In ANSI C it is necessary to cast the condition to an
     XtPointer, e.g.:
         XtAppAddInput(app_context,
             source,
             (XtPointer) (XtInputReadMask | XtInputWriteMask),
             proc,
             client_data);

XFree86                   Version 4.5.0                         2

Generated on 2017-04-03 16:26:17 by $MirOS: src/scripts/roff2htm,v 1.88 2017/01/29 00:51:06 tg Exp $

These manual pages and other documentation are copyrighted by their respective writers; their source is available at our CVSweb, AnonCVS, and other mirrors. The rest is Copyright © 2002–2017 The MirOS Project, Germany.
This product includes material provided by mirabilos.

This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report — diffs preferred.