WM_DELETE_WINDOW does not send ClientMessage

[Carsten Haitzler (The Rasterman)]

On Sun, 19 Jan 2020 15:17:17 +0100 Roland Plüss <roland at rptd.ch> said:

> Hi Lucien,
> 
> Depends what you call the same display. The window is created in the
> render thread while event looping is done in the main thread. In both
> places XOpenDisplay(getenv("DISPLAY")) is called. Is this not the same
> display? If not how can I "attach" them together? It's a requirement
> that the render thread creates the window while the main thread has to
> handle the event loop (to my knowledge only this works).

you use 2 display handles? oooooh... you're asking for trouble. you're asking
for ownesrship and lifecycle issues there as well as race conditions.

xlib can handle threads on the same Display handle, you just need to
XInitThreads() before you go using more than 1 thread with it. :)

> On 1/19/20 2:43 PM, Lucien Gentis wrote:
> >
> > Hello Roland,
> >
> > While defining delAtom and calling XSetWMProtocls, you specifiy
> > "display", and in your loop, you specify "pDisplay" ; is it the same
> > display ?
> >
> > Le 19/01/2020 à 13:33, Roland Plüss a écrit :
> >> I'm finishing up my software for releasing but run into a big issue. If
> >> I use window mode instead of full-screen mode the user should be able to
> >> close the window using the X button. I can prevent this from happening
> >> using this code:
> >>
> >> Atom delAtom = XInternAtom( display, "WM_DELETE_WINDOW", False );
> >> XSetWMProtocols( display, pWindow, &delAtom, 1 );
> >>
> >> The window will not be destroyed when X is pressed so I think this
> >> worked. The problem is though that I do not received ClientMessage and
> >> thus I am unable to close the window. This is the event loop:
> >>
> >> XEvent event;
> >> while( XPending( pDisplay ) ){
> >>    XNextEvent( pDisplay, &event );
> >>    log("Event %d", event.type);
> >>    switch( event.type ){
> >>    ...
> >>    case ClientMessage:
> >>       log("Quit Request Received");
> >>       break;
> >>    }
> >> }
> >>
> >> Window is created like this:
> >>
> >> #define BASIC_EVENT_MASK     ( StructureNotifyMask | ExposureMask |
> >> PropertyChangeMask \
> >>                              | EnterWindowMask | LeaveWindowMask |
> >> KeyPressMask \
> >>                              | KeyReleaseMask | KeymapStateMask |
> >> FocusChangeMask )
> >>
> >> #define NOT_PROPAGATE_MASK   ( KeyPressMask | KeyReleaseMask |
> >> ButtonPressMask \
> >>                              | ButtonReleaseMask | PointerMotionMask |
> >> ButtonMotionMask )
> >>
> >> XSetWindowAttributes swa;
> >> swa.colormap = colMap;
> >> swa.backing_store = NotUseful;
> >> swa.border_pixel = 0;
> >> swa.event_mask = BASIC_EVENT_MASK;
> >> swa.do_not_propagate_mask = NOT_PROPAGATE_MASK;
> >> swa.override_redirect = False;
> >> swa.save_under = False;
> >> swa.cursor = 0;
> >> swa.bit_gravity = ForgetGravity;
> >> swa.win_gravity = NorthWestGravity;
> >>
> >> Any idea what else I need to do to get this working?
> >>
> >>
> >> _______________________________________________
> >> xorg at lists.x.org: X.Org support
> >> Archives: http://lists.freedesktop.org/archives/xorg
> >> Info: https://lists.x.org/mailman/listinfo/xorg
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> >
> > _______________________________________________
> > xorg at lists.x.org: X.Org support
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> > Your subscription address: %(user_address)s
> 
> -- 
> Mit freundlichen Grüssen
> Plüss Roland
> 
> Leader und Head Programmer
> - Game: Epsylon ( http://www.indiedb.com/games/epsylon )
> - Game Engine: Drag[en]gine ( http://www.indiedb.com/engines/dragengine
> , http://dragengine.rptd.ch/wiki )
> - Sowie verschiedene Blender Export-Skripts und Game-Tools


-- 
------------- Codito, ergo sum - "I code, therefore I am" --------------
Carsten Haitzler - raster at rasterman.com