I know this is an unsupported feature, but maybe someone can help anyway.
I have been using ChartControl.ChartPanel.Invalidate() to redraw the screen on a button press, and also on a timer. I have noticed a couple of anomalies. if a text object is redrawn it can leave the previous rendering in place, and redraw over the top of it - when you set the transparency you can see the older drawing behind.
there are situations also where I specifically make removedrawobject() calls and the objects are not removed.
I am using these techniques in 2 different indicators I am developing, and both of these indicators have secondary dataseries, could that possibly have something to do with it?
Thanks,
Will.
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