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

XWIN 3.0               Last change: 9/1/88                 .ie t

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

XWIN 3.0               Last change: 9/1/88                 .ie t

XWIN 3.0               Last change: 9/1/88                 .ie t