XtAppAddInput(3Xt)                   SysV                   XtAppAddInput(3Xt)



NAME
     XtAppAddInput, XtRemoveInput - register and remove an input source

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

     void XtRemoveInput(id)
           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 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