WM_DELETE_WINDOW does not send ClientMessage

[Roland Plüss]

In many cases I can do it purely on the render thread only if this
helps. If though a toolkit is involved (FOX in this case) then I need to
"inject" the render window.

I can prevent synchronization issues easily if this is required as I
have a specific synchronization window so no two display would access X
at the same time. Would this help?

On 1/19/20 6:28 PM, Carsten Haitzler (The Rasterman) wrote:
> 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?
>>>>
>>>>
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>> -- 
>> 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
>

-- 
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

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