TeeChart V6

[Roy]

Where can I find information to change the Series Marks Arrowhead at runtime?

[Yeray]

Hi Roy,

You could do something like this:

Code: Select all

Series1.Marks.Callout.ArrowHead := ahSolid;

[Roy]

Thanks. That worked and looks good. Is there anywhere that I can find this information?

[Yeray]

Hi Roy,

The help says:

type TArrowHeadStyle = (ahNone, ahLine, ahSolid);

Unit
TeEngine

Description
Used by TCallout class to optionally display an "arrow head" shape at the end of the callout line.

[Roy]

Thanks. One more question. Using the Series Marks with the text rotated 90 degrees, the text overlaps the arrow so that the first character is hard to read. Is there any way to change the spacing between the arrow and the text box?

[Yeray]

Hi Roy,

I'm afraid that you should change your marks positions manually like in this examples. This is a known problem already in the wish list to be fixed (TV52010462) in future releases.

[Roy]

Thanks for the info. Will wait for that release.
Could you explain the Page property for a chart? Will this allow several graphs to be generated and then scrolled thru to view?

[Yeray]

Hi Roy,

The paging feature takes the variable MaxPointsPerPage and performs a SetMinMax in the bottom axis to show from point 0 to MaxPointsPerPage-1. Then it allows you to scroll through pages with the Next and Previous page functions. For example, having 100 points and setting MaxPointsPerPage to 10 it will show from point 0 to 9 by default. Then, the first call to Next function will perform a SetMinMax(10, 19) and so on.