[Lazarus] Shell notifications

[Mark Morgan Lloyd]

Michael Schnell wrote:
> On 08/21/2013 02:36 PM, Mark Morgan Lloyd wrote:
>> I know it's the obvious way, but surely there is something more 
>> elegant than having a thread which exists solely to transfer the 
>> result of a select() to the main part of the app, and then repeats 
> 
> I suppose a thread is the only way to do this in a portable way.
> 
> The cost of a thread is close to zero. It just blocks in the requests 
> and does a single turn for any change.

[Noting also Henry's comment] I suppose that, at least for unix 
platforms, you could have a single app-wide thread which selects on 
designated handles and syncs a magic number to the foreground. The 
tricky bit, which would merit attention from somebody who really knows 
the native APIs, would be adding and removing handles on the fly.

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

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