Hello Vic, On 10/06/2012 01:50 PM, Vic Lee wrote: [...] > I am not sure if anyone is aware of the issue, but for quite a while I > notice that virtualbox is obviously skipping my mouse clicks. Depending > on whether I have guest mouse driver installed or not, whether I connect > to console or through RDP, the skip rate may be different but not solved. > > I spent some time debugging from source and I am able to identify the > issue is in function usbHidMousePutEventAbs() in UsbMouse.cpp. There is > a call to usbHidQueueRemoveHead (line 801) which will return NULL > whenever my click is skipped. The problem here is that if the button > state is not being changed, it will be ok to skip mouse events; but if > pThs->PtrDelta.btn != fButtonStates, the event should not be skipped, > but must be queued until available. Otherwise either mouse press or > release event will not be reported to the host and is quite annoying. > usbHidMousePutEvent() function should be the same as well. > > UsbKbd.cpp, however, is properly queuing pending key events, thus I > never experience missed keys. Any idea to improve UsbMouse? [...] The maintainer of the USB pointing device emulation code (Michal, CC-ed) is taking a look at it and can see the problem, but is a bit surprised that you are the first person to notice it. Would you be able to provide more information about how you are using VirtualBox which might give us a hint?
Thanks! Regards, Michael -- ORACLE Deutschland B.V. & Co. KG Michael Thayer Werkstrasse 24 VirtualBox engineering 71384 Weinstadt, Germany mailto:[email protected] Hauptverwaltung: Riesstr. 25, D-80992 München Registergericht: Amtsgericht München, HRA 95603 Geschäftsführer: Jürgen Kunz Komplementärin: ORACLE Deutschland Verwaltung B.V. Hertogswetering 163/167, 3543 AS Utrecht, Niederlande Handelsregister der Handelskammer Midden-Niederlande, Nr. 30143697 Geschäftsführer: Alexander van der Ven, Astrid Kepper, Val Maher _______________________________________________ vbox-dev mailing list [email protected] https://www.virtualbox.org/mailman/listinfo/vbox-dev
