[DUG] graphics stops updating

[Ross Levis]

Now that I have good logarithmic values, I've installed a couple of independent 3rd party free VU meter components to visually display the values.  This is working well most of the time, but I'm having trouble with both of these components.  For no apparent reason, they freeze on the screen.  The components are still running and drawing lines on the canvas, as I've traced this through the code, but nothing appears on the screen.  If I minimize and restore the form, the components often become invisible.  They are not being repainted.

I've tried Invalidate, but this makes no difference, apart from some minor flickering of the component while it is working, but not when it isn't.  The components are being updated every 50ms.  This is a 2Ghz PC.

I've tried Application.ProcessMessages.  Any other ideas?

Thanks,
Ross.
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