XtAppAddInput(3Xt)                             XtAppAddInput(3Xt)



NAME
     XtAppAddInput, XtRemoveInput - register and remove an  input
     source

SYNOPSIS
     XtInputId XtAppAddInput(app-context, source, condition,
     proc, client-data)
     XtAppContext app-context;
     int source;
     XtPointer condition;
     XtInputCallbackProc proc;
     XtPointer client-data;

     void XtRemoveInput(id)
     XtInputId id;

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-
                                 r
     system dependent.  On a UNIX -based system, the condition is
     some union of XtInputReadMask, XtInputWriteMask, and
     XtInputExceptMask.  The XtRemoveInput function causes the
     Intrinsics read routine to stop watching for input from the
     input source.

   Arguments
     These functions accept the following 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 depen-
             dent condition.

     id      Specifies the ID returned from the corresponding
             XtAppAddInput call.

     proc    Specifies the procedure that is to be called when



November, 1990                                                  1

XtAppAddInput(3Xt)                             XtAppAddInput(3Xt)



             input is available.

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

SEE ALSO
     XtAppAddTimeOut(3Xt)

     X Toolkit Intrinsics - C Language Interface

     Xlib - C Language Interface












































2                                                  November, 1990