Currently migrating to Tee7 and D7. Have noticed some performance issues.
Specifically, I have soem large candle charts, with maybe 7 secondary series of lines and other types. Each series has > 50K points.
Underneath this I draw TColorBandTool [vertical bands], using DrawBehind := True;
There may be 1000 color bands,
In D5, I was able to draw all the color bands in a loop, and TeeChart would refresh itself AFTER the loop.
It now appears that TeeChart V7 repaints all the series EACH time a new ColorBand is Created OR Deleted. This is now painfully slow.
Q: Any way to use BeginUpdate / EndUpdate to postpone chart updates ?
Q2: Any way to use Buffered to "smooth" the display refreshes.
For now, I have kludged it to make the Chart.Visible := False; Doo everything; Chart.Visible := True;
THis results in annoying flashes.
Thks in advance.
