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XtAppAddInput(3)		 XT FUNCTIONS		      XtAppAddInput(3)

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 appli-
		 cation.

       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 XtAppAdd-
		 Input 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	depen-
       dent.  On a UNIX-based system, the condition is some union of XtInpu-
       tReadMask, XtInputWriteMask, and	XtInputExceptMask.  The	XtRemoveInput
       function	causes the Intrinsics read routine to stop watching for	input
       from the	input source.

SEE ALSO
       XtAppAddTimeOut(3),XtAppAddSignal(3)
       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);

X Version 11			  libXt	1.1.5		      XtAppAddInput(3)

NAME | SYNTAX | ARGUMENTS | DESCRIPTION | SEE ALSO | BUGS

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