XtAppAddInput(3Xt)            SDK X11 R4.11MU05           XtAppAddInput(3Xt)


NAME
       XtAppAddInput, XtRemoveInput - register and remove an input source

SYNTAX
       XtInputId XtAppAddInput(appcontext, source, condition, proc,
       clientdata)
             XtAppContext appcontext;
             int source;
             XtPointer condition;
             XtInputCallbackProc proc;
             XtPointer clientdata;

       void XtRemoveInput(id)
             XtInputId id;

ARGUMENTS
       appcontext
                 Specifies the application context that identifies the
                 application.

       clientdata
                 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 XtInputExceptMask.  The
       XtRemoveInput function causes the Intrinsics read routine to stop
       watching for input from the input source.

SEE ALSO
       XtAppAddTimeOut(3Xt)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface


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