XtAppAddInput(3Xt)          X Version 11(Release 3)          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;
            XtPointer condition;
            XtInputCallbackProc proc;
            XtPointer 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.





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XtAppAddInput(3Xt)          X Version 11(Release 3)          XtAppAddInput(3Xt)


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


















































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