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Conference bulova::decw_jan-89_to_nov-90

Title:	DECWINDOWS 26-JAN-89 to 29-NOV-90
Notice:	See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit
Moderator:	STAR::VATNE

Created:	Mon Oct 30 1989
Last Modified:	Mon Dec 31 1990
Last Successful Update:	Fri Jun 06 1997
Number of topics:	3726
Total number of notes:	19516

1801.0. "Chacth the quit event from session manager" by TOSSUC::CREMASCO () Tue Nov 28 1989 09:34

    
    I need to known if is possible to decwindows application to be
    notified when the session manager is quiting.
    I mean, there is an graphics interface that comunicate with other
    process, and i need to close correctly this comunication when
    the application exit. If i quit the session with the session manager
    my application is stopped and the comunication is broken abnormaly.
    I need to chatch this event to close correctly my program.
    Samebody have any ideas ????
    
    						Roberto Cremasco.

T.R	Title	User	Personal Name	Date	Lines
1801.1	try using xsetioerrorhandler	STAR::BROUILLETTE		`Tue Nov 28 1989 17:08`	6
	When the session manager resets the server, your connection is broken. You could set up an XIO error event handler. Use XSetIOErrorHandler. The routine you specify will be called when the connection is broken and you can do your clean up work there.
1801.2		PSW::WINALSKI	Careful with that VAX, Eugene	`Tue Nov 28 1989 21:57`	6
	Under VMS, you can declare an exit handler for your program so that if it is terminated, the exit handler gets control. See the $DCLEXH system service description in the doc set. Of course, that won't work if the Session Manager terminates applications using $DELPRC. --PSW
1801.3		TOSSU3::CREMASCO		`Wed Nov 29 1989 08:48`	7
	Many thanks for your answers. I try now. Do you know if the session manager use realy the $DELPRC? RoC.
1801.4	Session Manager does not use $DELPRC	STAR::VATNE	Peter Vatne, VMS Development	`Wed Nov 29 1989 12:02`	8
	The session manager does not use $DELPRC to terminate applications. The applications can be running anywhere on the network. The session manager sends a message to the server to disconnect all clients. When the server closes the connection, the client on the other end of the connection will receive an error inside Xlib. Either Karen's or Paul's suggestions will work, but I would go with Karen's suggestion, as I believe XSetIOErrorHandler is transportable.