Thank you.
I meant the label..and I used the TFastLineSeries...
SO I will change to TLineSeries and try again.

The color cannt be changed by the following code. BTW, I am using the newest Teechart(2014) for C++Builder XE4 Firemonkey HD APP. //--------------------------------------------------------------------------- #include <fmx.h> #pragma hdrstop #include <iostream> #include <string> #include "Unit12.h" /...

Q1:We know that NULL values could be added to series by AddNull() function.
Is there a way to Add a null array to series, something like AddNullArray?

Q2: SetNull() function can be used to set specified point to NULL,
Is there a function to set all the point to NULL?

The last version(v2014.10.140220) seems working well.
Thank you!

Is there some property like Series1->Marks->Color used to change the color of specified mark of TPointSeries?

Thanks in advance.

The Teechart can be used at touchpanel, like window8 Surface?

I am using the newest version for Firemonkey HD App.

When the form is the default size, like 1024 * 768, The ColorBandTool of TScrollPagerTool can be dragged smoothly... But when I maximum the form size, like 1920*1024 for my display, the dragging speed of ColorBandTool falls down seriously.. Is there any idea ? BTW, there are about 15,000 data per Ch...

I am sorry that I attached the images for the style of which is cssHorizontal, which works well just by assigning new X offset when page changed.. I meant to attach the ones for the style of which is cssVertical, the cursor with the style of cssVertical disappeared when paged changed... Add I upload...

Please download the example project from here.
https://onedrive.live.com/redir?resid=5 ... 0ADC%21220

We know that TPointSeries provides Marks->Item->Color property
for changing the color of each marks.

But how to change the color of each point of TPointSeries...
I cannt find something like Pointer->Item->Color..
only the property Pointer->Color provided for changing the color of all pointers.

When change the page of TChart, the cursorline disappeared,
the style of which is cssHorizontal...
while the one of cssVertical is OK.

Can you tell us the link where you mentioned this before? I guess we could add some method to both set the ColorBandTool values and the Parent Chart Axis Range. However, I'd consider it as an enhancement not a bug because it never was automatic. I may be wrong and maybe it was working before and it...