XtRemoveInput

XtAppAddInput(3Xt)		 XT FUNCTIONS		   XtAppAddInput(3Xt)



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 excep-
		 tion 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
       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),XtAppAddSignal(3Xt)
       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);



							   XtAppAddInput(3Xt)