tcl_deleteclosehandler(3tcl) [opensolaris man page]

Tcl_CreateCloseHandler(3TCL)				      Tcl Library Procedures				      Tcl_CreateCloseHandler(3TCL)

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NAME

       Tcl_CreateCloseHandler, Tcl_DeleteCloseHandler - arrange for callbacks when channels are closed

SYNOPSIS

       #include <tcl.h>

       void
       Tcl_CreateCloseHandler(channel, proc, clientData)

       void
       Tcl_DeleteCloseHandler(channel, proc, clientData)

ARGUMENTS

       Tcl_Channel     channel	      (in)	The channel for which to create or delete a close callback.

       Tcl_CloseProc   *proc	      (in)	The procedure to call as the callback.

       ClientData      clientData     (in)	Arbitrary one-word value to pass to proc.
_________________________________________________________________

DESCRIPTION

       Tcl_CreateCloseHandler  arranges  for  proc  to	be called when channel is closed with Tcl_Close or Tcl_UnregisterChannel, or using the Tcl
       close command.  Proc should match the following prototype:

	      typedef void Tcl_CloseProc(
		ClientData clientData);

       The clientData is the same as the value provided in the call to Tcl_CreateCloseHandler.

       Tcl_DeleteCloseHandler removes a close callback for channel.  The proc and clientData identify which close callback to remove;  Tcl_Delete-
       CloseHandler does nothing if its proc and clientData arguments do not match the proc and clientData for a  close handler for channel.

SEE ALSO

       close(1T), Tcl_Close(3TCL), Tcl_UnregisterChannel(3TCL)

KEYWORDS

       callback, channel closing

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWTcl	      |
       +--------------------+-----------------+
       |Interface Stability | Uncommitted     |
       +--------------------+-----------------+
NOTES

       Source for Tcl is available on http://opensolaris.org.

Tcl									7.5					      Tcl_CreateCloseHandler(3TCL)

Tcl_CreateTimerHandler(3TCL)				      Tcl Library Procedures				      Tcl_CreateTimerHandler(3TCL)

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NAME

       Tcl_CreateTimerHandler, Tcl_DeleteTimerHandler - call a procedure at a given time

SYNOPSIS

       #include <tcl.h>

       Tcl_TimerToken
       Tcl_CreateTimerHandler(milliseconds, proc, clientData)

       Tcl_DeleteTimerHandler(token)

ARGUMENTS

       int		milliseconds   (in)	 How many milliseconds to wait before invoking proc.

       Tcl_TimerProc	*proc	       (in)	 Procedure to invoke after milliseconds have elapsed.

       ClientData	clientData     (in)	 Arbitrary one-word value to pass to proc.

       Tcl_TimerToken	token	       (in)	 Token	for previously-created timer handler (the return value from some previous call to Tcl_Cre-
						 ateTimerHandler).
_________________________________________________________________

DESCRIPTION

       Tcl_CreateTimerHandler arranges for proc to be invoked at a time milliseconds milliseconds in the future.  The callback	to  proc  will	be
       made  by  Tcl_DoOneEvent,  so  Tcl_CreateTimerHandler is only useful in programs that dispatch events through Tcl_DoOneEvent or through Tcl
       commands such as vwait.	The call to proc may not be made at the exact time given by milliseconds:  it will be made at the next opportunity
       after  that  time.  For example, if Tcl_DoOneEvent isn't called until long after the time has elapsed, or if there are other pending events
       to process before the call to proc, then the call to proc will be delayed.

       Proc should have arguments and return value that match the type Tcl_TimerProc:
	      typedef void Tcl_TimerProc(ClientData clientData);
       The clientData parameter to proc is a copy of the clientData argument given to Tcl_CreateTimerHandler when the callback was created.  Typi-
       cally, clientData points to a data structure containing application-specific information about what to do in proc.

       Tcl_DeleteTimerHandler  may  be	called to delete a previously-created timer handler.  It deletes the handler indicated by token so that no
       call to proc will be made;  if that handler no longer exists (e.g. because the time period has already elapsed and proc	has  been  invoked
       then  Tcl_DeleteTimerHandler  does nothing.  The tokens returned by Tcl_CreateTimerHandler never have a value of NULL, so if NULL is passed
       to Tcl_DeleteTimerHandler then the procedure does nothing.

KEYWORDS

       callback, clock, handler, timer

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWTcl	      |
       +--------------------+-----------------+
       |Interface Stability | Uncommitted     |
       +--------------------+-----------------+
NOTES

       Source for Tcl is available on http://opensolaris.org.

Tcl									7.5					      Tcl_CreateTimerHandler(3TCL)