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diff --git a/twin/wm-spec/x340.html b/twin/wm-spec/x340.html new file mode 100644 index 000000000..e72c48cc6 --- /dev/null +++ b/twin/wm-spec/x340.html @@ -0,0 +1,182 @@ +<HTML +><HEAD +><TITLE +>Window Manager Protocols</TITLE +><META +NAME="GENERATOR" +CONTENT="Modular DocBook HTML Stylesheet Version 1.72 +"><LINK +REL="HOME" +HREF="index.html"><LINK +REL="PREVIOUS" +TITLE="Application Window Properties" +HREF="x225.html"><LINK +REL="NEXT" +TITLE="Implementation notes" +HREF="x351.html"></HEAD +><BODY +CLASS="SECT1" +BGCOLOR="#FFFFFF" +TEXT="#000000" +LINK="#0000FF" +VLINK="#840084" +ALINK="#0000FF" +><DIV +CLASS="NAVHEADER" +><TABLE +SUMMARY="Header navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TH +COLSPAN="3" +ALIGN="center" +></TH +></TR +><TR +><TD +WIDTH="10%" +ALIGN="left" +VALIGN="bottom" +><A +HREF="x225.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="80%" +ALIGN="center" +VALIGN="bottom" +></TD +><TD +WIDTH="10%" +ALIGN="right" +VALIGN="bottom" +><A +HREF="x351.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +></TABLE +><HR +ALIGN="LEFT" +WIDTH="100%"></DIV +><DIV +CLASS="SECT1" +><H1 +CLASS="SECT1" +><A +NAME="AEN340" +>6. Window Manager Protocols</A +></H1 +><DIV +CLASS="SECT2" +><H2 +CLASS="SECT2" +><A +NAME="AEN342" +>6.1. _NET_WM_PING</A +></H2 +><P +>This protocol allows the Window Manager to determine if the Client is still +processing X events. This can be used by the Window Manager to determine if a +window which fails to close after being sent WM_DELETE_WINDOW has stopped +responding, or has stalled for some other reason, such as waiting for user +confirmation. A Client SHOULD indicate that it is willing to participate in +this protocol by listing _NET_WM_PING in the WM_PROTOCOLS property of the +client window. + </P +><P +>A Window Manager can use this protocol at any time by sending a client message +as follows: + </P +><PRE +CLASS="PROGRAMLISTING" +>type = ClientMessage +window = the respective client window +message_type = WM_PROTOCOLS +format = 32 +data.l[0] = _NET_WM_PING +data.l[1] = timestamp</PRE +><P +>A participating Client receiving this message MUST send it back to the root +window immediately, by setting window = root, and calling XSendEvent. The +Client MUST NOT alter the timestamp, as this can be used by the Window Manager +to uniquely identify the ping. + </P +><P +>The Window Manager MAY kill the Client (using _NET_WM_PID) if it fails to +respond to this protocol within a reasonable time. + </P +><P +>See also the implementation notes on <A +HREF="x351.html#KILLINGWINDOWS" +>killing hung processes</A +>. + </P +></DIV +></DIV +><DIV +CLASS="NAVFOOTER" +><HR +ALIGN="LEFT" +WIDTH="100%"><TABLE +SUMMARY="Footer navigation table" +WIDTH="100%" +BORDER="0" +CELLPADDING="0" +CELLSPACING="0" +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +><A +HREF="x225.html" +ACCESSKEY="P" +>Prev</A +></TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +><A +HREF="index.html" +ACCESSKEY="H" +>Home</A +></TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +><A +HREF="x351.html" +ACCESSKEY="N" +>Next</A +></TD +></TR +><TR +><TD +WIDTH="33%" +ALIGN="left" +VALIGN="top" +>Application Window Properties</TD +><TD +WIDTH="34%" +ALIGN="center" +VALIGN="top" +> </TD +><TD +WIDTH="33%" +ALIGN="right" +VALIGN="top" +>Implementation notes</TD +></TR +></TABLE +></DIV +></BODY +></HTML +>
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