Am Donnerstag, den 31.01.2008, 08:39 +0200 schrieb A.J. Venter:
> > I haven't looked into the sources deeply, but can't you override some
> > OnKeyXxx-methods to get the key events?
> I don't think there ARE any to overwrite- perhaps in the parent class
> for TCustomControl, but they aren't republished. If you use override
> though - you may as well rewrite them as you'll need to do the same work
> anyway - it doesn't solve the clutter-and-duplicate problem.
Seems to be that way, I couldn't find them either (but I didn't search
for hours or try to understand how it may work ;).
> > If not, maybe hooking into the surrounding forms events would suffice.
> This was my first idea, but unfortunately, it doesn't work at all. The
> reason is that forms only get keyboard focus onActivate and even then
> they only keep it if there is no focusable components - else it's
> hardpassed to the component with focus preference. Running
> Form.SetFocus throws an exception (Form cannot take focus) - [why is it
> there if it cannot be called ?]
> If there is a way to make a form take keyboard focus to itself so it's
> keyEvents work even if there are focusable components on it then I
> haven't found it yet.
TForm only get's the events from the keyboard if "KeyPreview" is set,
IIRC. Apparently it's not a good way to go because enforcing key preview
on the form may spoil some other techniques or hinder existing programs
from working.
I hope someone having intimate LCL knowledge can jump in here and
suggest a less intrusive approach...
Marc
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