Jason Pollard wrote:
>
>
>>Well the thing is that I just started off trying to create a Gauge that
>>was a modified Label - having been unable to extend either Label or
>>Component, I created a Gauge class that included a Label inside it.
>>
>>
>
>You can't extend the Component abstract class?
>
Well you can - but you can't override the paint method, which I think is
what gets called to actually draw the component - if you don't override
the paint method, then the Component default paint methods get used -
and in the emulator at least, nothing gets drawn
>That would be the way to go if
>you could. Something like at the bottom. If the gauge was a Component, you
>could put it in your toolbox and use it anywhere you'd use another component.
>For example, you could:
>aPanel.add(gauge)
>
>This example isn't the best if code size is a problem for you. But extending
>Component would be more object oriented and reusable.
>
I just tried out your suggestion, which was a good one. The getWidth()
and getHeight() methods are final so they can't be overidden, so I left
those out. But I implemented all the others as you suggested, and added
the gauge as a component, but nothing gets drawn - when I run it in the
emulator that is.
I agree this would be more OO and re-usable, but as is sometimes the
case with these things it seems it doesn't actually produce a working
GUI component It may be that there are additional changes that might
make this approach work on the emulator and phone, but I think the
inability to overide the components paint method is the real sticking
point ...
CHEERS> SAM
p.s. thanks for all your input on this if I didn't thank you already
Received on Thu Sep 18 13:16:28 2003