Steema Central

Hi
We are getting some problems trying to change by code the contour values of a graphic. We have no problem to set the value of the contour on design-time, the problem is when we try to change this value on run-time, and we get the following error:

Access violation at address 20033204 in module rtl100.bpl

The lines where we try to modify the contours are:

Series2->AutomaticLevels = false;
Series2->NumLevels = 3;
Series2->CreateAutoLevels();
Series2->Levels->Items[0]->UpToValue = 90;
Series2->Levels->Items[1]->UpToValue = 95;
Series2->Levels->Items[2]->UpToValue = 99;

I have the same problem.

I think you should add function Levels.Add before you use Levels
to create Item .


Pascal :


for I := 0 to 15 do begin
Levels.Add;
Levels.Items .UpToValue := 5 + I * 5;
Levels.Items .Color := ColorPalette ;
end;

I'm still having the same error when I add the levels before use them. The problem is that when I try to use levels, the pointer to these class (TContourLevels) is not initialize and it's pointing to nowhere. The question is that I don't know how to make Levels-> to point to the correct direction.
I thought this would be automatic (as I saw in some examples), and just doing:
Series2->Levels->Items->UpToDate = ...
it should work correctly, but it doesn't

Hi Jorge,

Which TeeChart version are you using? Could youplease check if your problem is the same as described here?

Thanks in advance.

Hi Narcis

I'm using TeeChart 8.01 for C++ Builder 6, and yes my problem is the same as the problem described in the link above.
So is there something I can do to modify the contour values at run-time? Because we have bougtht and migrated our proyect to this new version of TeeChart in order to have a software that allow us to implement this new funcionalities, which are very important to develop our proyect.

Regards
Jorge

Hi Jorge,

Thanks for the information. This is a prioritary issue we will try to fix for next releases.