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Canvas bounds and Figure bounds [message #157648]

Thu, 11 November 2004 06:50

Eclipse User

Originally posted by: daniel.yahoo.com

Hi
In my application I create two controls: a canvas(A) and a
FigureCanvas(B). In A I created a lightweightsystem with a figure(C). B is
below A and B can scroll. when B scrolls the C figure and A control will
set their bounds to display some information about A. But I met some
problems:
The biggest bounds of A is 32767. So the C figure bounds is 32767 and
when the value I display is bigger than some value. The A control and c
Figure is not painted normally.
I don't know if the SWT control's bounds is 32767.
Can you give me some suggestions?
3x
Daniel

Re: Canvas bounds and Figure bounds [message #157696 is a reply to message #157648]

Thu, 11 November 2004 10:21

Eclipse User

Originally posted by: none.us.ibm.com

I think that windows combines width and height into a single 32-bit value,
so 16-bits for each == 32K
"daniel" <daniel@yahoo.com> wrote in message
news:cmvjlf$l3q$1@eclipse.org...
> Hi
> In my application I create two controls: a canvas(A) and a
> FigureCanvas(B). In A I created a lightweightsystem with a figure(C). B is
> below A and B can scroll. when B scrolls the C figure and A control will
> set their bounds to display some information about A. But I met some
> problems:
> The biggest bounds of A is 32767. So the C figure bounds is 32767 and
> when the value I display is bigger than some value. The A control and c
> Figure is not painted normally.
> I don't know if the SWT control's bounds is 32767.
> Can you give me some suggestions?
> 3x
> Daniel
>
>

Re: Canvas bounds and Figure bounds [message #157743 is a reply to message #157648]

Thu, 11 November 2004 17:20

Eclipse User

Well, 2^16 = 64K, but there might still be a limit on how big the control
can get. Daniel, you should ask the SWT newsgroup about that. Also, what
are the symptoms of "A control and c Figure not painting properly"? Maybe a
screenshot'll shed some light on what it is that you're trying to do and
what is not working properly.

"daniel" <daniel@yahoo.com> wrote in message
news:cmvjlf$l3q$1@eclipse.org...
> Hi
> In my application I create two controls: a canvas(A) and a
> FigureCanvas(B). In A I created a lightweightsystem with a figure(C). B is
> below A and B can scroll. when B scrolls the C figure and A control will
> set their bounds to display some information about A. But I met some
> problems:
> The biggest bounds of A is 32767. So the C figure bounds is 32767 and
> when the value I display is bigger than some value. The A control and c
> Figure is not painted normally.
> I don't know if the SWT control's bounds is 32767.
> Can you give me some suggestions?
> 3x
> Daniel
>
>

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