Ctrl-M?

>
> Hi all,
>
> while debugging through some event handling on Windows it seems that
> ctrl-m is the only key (combination) that is not generating a keystroke
> event? See the low level key event log below.
> Explanations? Red herring pointers?
>
> Thanks
>
> Michael
> P.S. Haven't checked on other platforms
>
>
> [keyDown '<tab>']
> [keystroke '<tab>']
> #(2 32815515 9 2 0 9 0 1)
> [keyUp '<tab>']
>
> #(2 32819187 17 1 2 17 0 1)
> [keyDown '<Ctrl-q>'] pressing the ctrl key
> #(2 32819890 77 1 2 77 0 1)
> [keyDown '<Ctrl-M>']
> #(2 32819968 77 2 2 77 0 1)
> [keyUp '<Ctrl-M>']
> #(2 32820515 17 2 0 17 0 1)
>

>
> Ctrl-M is VK_RETURN and although I don't recall the precise
> circumstances some parts of the image got severely confused when that
> key was reported normally. If you would like to experiment with it, just
> remove the line in sqWin32Window.c that says:
>
>       /* Note: VK_RETURN is recorded as virtual key ONLY */
>       if(keyCode == 13) return 1;
>
> I'd be interested in finding out if this is still an issue or not (there
> is a good possibility that this goes back all the way to the state-based
> primitives which had to use a mixture of keyDown/keyChar events to
> produce proper results).

>
> Michael Rueger wrote:
>
>> it seems both tab and cr are handled twice in paragraph editor when
>> handled as meta keys. Not sure why yet...
>
> OK, this is what I figured out and I might be completely wrong. Couldn't
> find any hints in documentation so it's based on trial and error.
>
> CR and TAB act as normal keys (windows event wise) *unless* ctrl is
> pressed.
> - removed CR and TAB from virtual key map
> - add an extra keyChar event in that case (ctrl pressed together with CR
> or TAB).
>
> See code below.
>
> Flames, pointers to docs, explanations welcome :-)
>
> Michael
>
> ----------------------------------------
>
> /* Map a virtual key into something the Mac understands */
> int mapVirtualKey(int virtKey)
> {
>   switch (virtKey) {
>     case VK_DELETE: return 127;
>     case VK_INSERT: return 5;
>     case VK_PRIOR:  return 11;
>     case VK_NEXT :  return 12;
>     case VK_END  :  return 4;
>     case VK_HOME :  return 1;
>     case VK_LEFT :  return 28;
>     case VK_RIGHT:  return 29;
>     case VK_UP   :  return 30;
>     case VK_DOWN :  return 31;
>     // case VK_RETURN: return 13;
>     // case VK_TAB    :     return 9;
>   }
>   return 0;
> }
>
> --------------------------------------
>
>   /* note: several keys are not reported as character events;
>      most noticably the mapped virtual keys. For those we
>      generate extra character events here */
>   if(pressCode == EventKeyDown
>         && (virtCode != 0
>           || ((keyCode == 13 || keyCode == 9) && ctrl))) {
>       /* generate extra character event */
>       sqKeyboardEvent *extra = (sqKeyboardEvent*)sqNextEventPut();
>       *extra = *evt;
>       extra->pressCode = EventKeyChar;
>   }
>