[Haiku-bugs] [Haiku] #3510: BWindow filters do not receive mouse clicks

[matjako]

#3510: BWindow filters do not receive mouse clicks
----------------------------------+-----------------------------------------
 Reporter:  matjako               |       Owner:  axeld         
     Type:  bug                   |      Status:  new           
 Priority:  normal                |   Milestone:  R1            
Component:  Kits/Application Kit  |     Version:  R1 development
Blockedby:                        |    Platform:  All           
 Blocking:                        |  
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 A filter added to a BWindow instance with AddCommonFilter() does not
 receive B_MOUSE_DOWN and B_MOUSE_UP messages, but it _does_ receive
 B_MOUSE_MOVED. That inhibits simple implementation of a mouse capture
 filter etc.

 EXPECTED BEHAVIOUR

 Like in BeOS R5 - all mouse messages are passed to a filter added to a
 BLooper.

 STEPS TO REPRODUCE

 Take any application with a window and some views in it and add a common
 filter to that window. Like so:

 //... in window init

 AddCommonFilter(new BMessageFilter(B_ANY_DELIVERY, B_LOCAL_SOURCE,
 pass_thru_filter);

 //...

 filter_result pass_thru_filter(BMessage *message, BHandler **target,
 BMessageFilter *messageFilter)
 {
     message->PrintToStream();
     return B_DISPATCH_MESSAGE;
 }

 Run in Terminal. Click and hover over views in the window - only
 B_MOUSE_MOVED messages print out, mouse clicks appear to be MIA.

-- 
Ticket URL: <http://dev.haiku-os.org/ticket/3510>
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