Re: SHIFT keys on X11

[Stéphane Goujet]

Fred Kiefer a écrit :

> most of what you write makes sense to me, but what do you need this
> static variable shiftPressed for? My impression is that this will get
> you into trouble. If the shift key gets pressed or released while
> another application has the focus, your counter will get out of step.

  I will check that. I did not think of it before.

> Why cann't you make the decision, if the eventflags should include
> NSShiftKeyMask, just in the state of the keyboard and on the fact, if
> the shift key was pressed in this event?
> Could you please try if this code wors for you, or if you experiance
> any problems with it.

  Your code is what I tried first, but the problem is that there are 2 
SHIFT keys on a keyboard.
1) Press SHIFT_L -> NSShiftKeyMask is set, OK
2) Press SHIFT_R -> NSShiftKeyMask is set, OK
3) Release SHIFT_R -> NSShiftKeyMask is cleared, BOUM

> I am suggesting something similar to:
>   if (keysym_is_X_modifier (keysym))
>     {
>     switch (keysym)
>       {
>       case XK_Shift_L:
>       case XK_Shift_R:
>         if(xEvent->xkey.type==KeyPress)
>           {
>             eventFlags|= NSShiftKeyMask;
>           }
>         else
>           {
>             // KeyRelease
>             eventFlags&= ~NSShiftKeyMask;
>           }
>       default:
>         break;
>       }
>       eventType = NSFlagsChanged;
>     }

> (With the correct GNUstep indentation of course)

  :-) Sorry, it is weird for me :-) But I shall try if I post more code.

Goodbye,
         Stéphane.