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#21 Server does not receive ctrl-alt-<key> combinations

General
closed
General (17)
5
2021-09-27
2005-01-14
No

Hot-key combinations of the format ctrl-alt-<key> are
not being received on the host running the VNC server
when entered on the host running Win2VNC.

Discussion

  • Cristian Southall

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    I should have mentioned that the server is running WinXP Pro
    and the client is running WinXP Home.

     
  • Feico de Boer

    Feico de Boer - 2005-01-14
    • assigned_to: nobody --> fdboer
     
  • Feico de Boer

    Feico de Boer - 2005-01-14

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    Can you give a specific use for this or a way to reproduce.

     
  • Cristian Southall

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    This could be reproduced by attempting to use one of the
    many ctrl-alt-<X> based shortcuts in IntelliJ IDEA (as I
    found the issue) but is more easily seen when attempting to
    assign a shortcut key to a style in MS Word (an option
    available via the style gallery). You will notice that when
    attempting to enter a ctrl-alt-<X> shortcut in the field
    provided that nothing is registered, yet it is possible to
    assign such a shortcut.

     
  • Feico de Boer

    Feico de Boer - 2005-01-18

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    The low level keyboard handling does not seem the handle
    these kind of action properly. It appears to be related to
    the other issue you reported but I leave this open for now.
    A quick investigation showed that key up/down strokes are
    send in a high rate to the server. In your case, the Ctrl
    and Alt keys are transmitted, so is the 'B'. However, before
    the 'B' is received a lot of Ctrl-Alt up and downs have been
    received and the server sees the wrong key combination.

    Fixing the Low Level Keyboard Handling wil most likely cure
    the problem. More investigation is underway.

     
  • Cristian Southall

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    I think there may also be a related issue. I have noticed
    some inconsistencies with alt-<X> events:

    * alt-F10 does not appear to be sent to the server. This can
    be recreated by entering command mode in gvim and trying all
    alt-<function key> combinations. You will see an event
    registered for all combinations except alt-F10
    * alt-<function key events> do not always appear to be sent
    cleanly to the server. Whilst all combinations except the
    one noted above work in gvim, IDEA IntelliJ (and I,
    therefore, assume other Java applications) only
    intermittently receives alt-<function key combinations>. In
    particular:
    * alt-F7 (find usages) only intermittently works
    when the mouse is over a class name. The problem can often
    be circumvented by repeating the key combination.
    * alt-F3 (incremental search) should create a small
    text-entry pop-up in the top left of the editor pane. This
    combination seems to be ignored on occasion.

     
  • Juan M. Medina

    Juan M. Medina - 2006-05-04

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    The "Pause/Break" key is not sent either.

     
  • Feico de Boer

    Feico de Boer - 2009-11-15

    Vncviewer 3.3.7 seems to do the job correct. Forward porting key mapping code from vncviewer 3.3.7 to Win2VNC 1.5.x. Since this is not a trivial change in the code additional testing is required.

     
  • Feico de Boer

    Feico de Boer - 2021-09-27
    • status: open --> closed
     
  • Feico de Boer

    Feico de Boer - 2021-09-27

    No active development, closing ticket.

     

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