Where to get timestamp for selection?
ydroneaud at mandriva.com
Fri Feb 26 01:06:41 PST 2010
Le vendredi 26 février 2010 à 13:39 +0800, Zhang, Xing Z a écrit :
> Hello experts:
> ICCCM said “Clients attempting to acquire a selection must
> set the time value of the SetSelectionOwner
> request to the timestamp of the event triggering the acquisition
> attempt, not to CurrentTime”. In my simple
> code, there is no event happen before SetSelectionOwner, how can I get
> the timestamp? I didn’t see a function
> used to require timestamp in Xlib, so I have to trigger an event just
> for getting timestamp?
> I see in MetaCity, there is a PropModeReplace event prior to
> SetSelectionOwner. If I have to produce an event
> by myself, what’s event usually used?
The timestamp usually come from a ButtonEvent or KeyPressEvent, any
event linked to the user's action which creates the selection.
Selection shouldn't come from the ether, and that's why ICCCM forbid
For a test, you could could use the trick, from gtk,
XChangeProperty (xdisplay, xwindow, timestamp_prop_atom,
8, PropModeReplace, &c, 1);
XIfEvent (xdisplay, &xevent,
That should be the trick used by Metacity.
> I am not sure if there is a maillist for X newbie, if I post
> to wrong place, pls kindly direct me to right room.
In the future, you should ask on xorg at freedesktop.org instead of
xorg-devel at lists.x.org.
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