Cursor Tool manual position change

[madve]

Hi,

I want to set the XValue of the Vertical CursorTool when user clicks on Chart. I have DateTime Bottom Axis.

How can I do that?

(I want to read interpolated values of all series with cursortool according to "Interpolating line series" example in TeeChart .NET demo)

Thanks in advance,

Gabor Varga

[Christopher]

Hello,

How about setting the Cursor.XValue and Cursor.YValue within the TChart click event?

[madve]

Hi,

I used the following code:

Code: Select all

var
  P : Point;
begin
  P := TChart1.PointToClient( Cursor.Position );
  CursorTool1.XValue :=  P.X;

The problem is that Bottom axis is DateTime. CursorTool XValue must have a datetime in double.

for example:

Code: Select all

CursorTool1.XValue := DateTime.Now.AddDays(1).ToOADate ;

How can I transform Cursor.Position.X to to datetime?

Best regards,

Gabor Varga

[Christopher]

Hello,

Code: Select all

CursorTool1.XValue = DateTime.FromOADate(P.X);

should do it.

[madve]

Hi,

CursorTool1.XValue = DateTime.FromOADate(P.X);

I get the following error:

[Pascal Error] WinForm.pas(556): E2010 Incompatible types: 'Double' and 'DateTime'

So, i think you don't understand what I want thanks to my poor English...

I want to move programatically the position of the CursorTool where the user on the TeeChart clicked.

I can get X, Y position of the mouse click with from Cursor.Position but it is not in correlation with Bottom axis!!

Example:

When I click left side of the TeeChart I get X = 0. But when I set CursorTool1.XValue to 0 when Bottom Axis format is DateTime the position of the CursorTool will be somewhere in the past (maybe at 1970.01.01).

|
|
|------A
|........|
|........|
|........|
|------|------|------------------------ Bottom Axis
1:00 2:00 3:00

(dots are nothing)

So, when user clicks to position "A" I can get the Position of the click in points but _not_ the datetime on the Bottom Axis (in example today 02:00).

I hope I could clarify my problem.

Best regards,

Gabor Varga

[Christopher]

Hello,

Thank you for your clear explanation. Try the following:

Code: Select all

private void tChart1_ClickBackground(object sender, MouseEventArgs e)
    {
      double xvalue = tChart1.Axes.Bottom.CalcPosPoint(e.X);
      cursorTool1.XValue = xvalue;
    }