Hi, i have a chart with many series on it. i populate these series by dynamically generating numerical data during a 'run'. There is a predefined start time and end time. If i start a new 'run', i clear each of the series and re populate them during the run. The x-axis + yaxis ranges stay the same f...

it's TeeChart 5.02 with Delphi 6... On delphi faq's it is said that this is unsafe code as accessing the one canvas from different threads will cause problems - i.e. potentially the canvas will attempt to be drawn by both threads simultaneously it is suggested to use TCanvas.Lock and TCanvas.Unlock ...

maybe this will work... ASeries := TPointSeries.Create; ASeries.ParentChart := Chart1; ASeries.FillSampleValues(10); for i := 0 to ASeries.Count -1 do begin if ASeries.XValues < 5 then ASeries.ValueColor := clGreen; if ASeries.XValues > 5 then ASeries.ValueColor := clWhite; end; etc...

I am getting a "canvas does not allow drawing" exception from TCanvas.RequiredState procedure in graphics.pas in the VCL... it is occuring while i am running a realtime plot with 1000+ points... the points are being drawn onto the Chart.Canvas in a similar fashion to TFastLineSeries (overriding Noti...

I am performing calculations that dynamically add points to series, which in turn are automatically plotted on a TeeChart. One run for example may take 10 seconds, plotting 1000 points for 3 series. But by moving the mouse pointer repeatedly over the chart - the plotting speeds up - leaving a run to...