[Lazarus] libusb access from Lazarus

Mark Morgan Lloyd markMLl.lazarus at telemetry.co.uk
Tue Nov 18 18:40:19 CET 2008

Luca Olivetti wrote:
> En/na Mark Morgan Lloyd ha escrit:
>> Thanks Luca, I'll investigate. It's only for a Velleman K8055 USB board 
>> I'm tinkering with- just a few low-speed analogues and digitals.
> I took a look at the program at http://linuxk8055.free.fr/ and it seems 
> pretty simple, you should have no problem driving it from freepascal.

This is now working fairly well and I'm starting to add extras- variable 
rate polling, counter rate extraction and so on.

I'm left with one niggle though which has a fairly significant cosmetic 
effect. I've replaced the scrollbars in the original app with vertical 
TrackBars and ProgressBars for analogue output and input respectively. 
The ProgressBars work nicely with zero at the bottom, but the TrackBars 
appears to have zero immutably at the top.

Is there a way to turn a TrackBar upside down?

Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]

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