[Lazarus] Tprogressbar and positional info as ptrint.

Vincent Snijders vincent.snijders at gmail.com
Wed Dec 5 23:01:30 CET 2012


2012/12/5 Andrew Brunner <atbrunner at aurawin.com>:
> .
>
> On Dec 5, 2012, at 2:52 PM, Juha Manninen <juha.manninen62 at gmail.com> wrote:
>
>> On Wed, Dec 5, 2012 at 9:48 PM, Andrew Brunner <atbrunner at aurawin.com> wrote:
>>> I'm getting overflow exceptions on values greater than integer.  Can someone revise all values from integer to ptrint so on 64 bit systems it will be valid.
>>
>> You can scale the value in your code before using it for ProgressBar's Position.
>> Integer has 2^31 positive values which should be enough for all the
>> positions shown in a graphical component.
>>
>
> It is far more important to realize that on 64bit systems the GUI components can scale.  I have already tested ptrint on Ubuntu x64. It only took a few minor tweaks.
>
> I can provide diff if interested.  But changes to windows callback for comctrls will be needed as well.
>
> I assert that use of anything but ptrint in the factory with respect to tprogressbar is a flaw.  And it's a quick fix.
>

And won't that break streaming a form to lfm or lrs? Especially when
created on a 64 bits system and using on a 32 bits system?

Vincent




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