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No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Fri Oct 06, 2017 11:24 am
by 15681921
Hello Steema team,
I'm using Steema's TeeChart.WPF in a third party COM+ application with .NET wrapper.
My task is to implement a .NET based WPF control including a more or less complex chart.
The chart contains three Series from TeeChart.WPF.Styles.Line and TeeChart.WPF.Styles.Points.
From the tutorial I have implemented the following statement (just this; nothing more) to enable zoom functionality within the chart.
Code: Select all
C#
Steema.TeeChart.WPF.Zoom ChartZoom = new Steema.TeeChart.WPF.Zoom(MainChart.Chart);
Doing so, zooming with the left mouse button and panning with the right mouse button is working perfect.
BUT there is no rectangle or any other visual effect shown, when zooming or panning. The chart is just zoomed in after doing the mouse - but you have to guess about the toom area.
Do you have any idea how to influence the zoom area rectangle which is shown when I run the examples from XAML WPF demo?
Note: All the charting is made at runtime programmatically.
Thank you for any help on this.
Best, Jens
Re: No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Fri Oct 06, 2017 2:14 pm
by Christopher
Hello Jens,
There's no need to create an instance of the Zoom class - you will be able to modify zoom characteristics using the following code:
Code: Select all
private void InitializeChart()
{
Bar series = new Bar(tChart1.Chart);
series.FillSampleValues();
tChart1.Zoom.Direction = ZoomDirections.Both;
tChart1.Zoom.Brush.Visible = true;
tChart1.Zoom.Brush.Color = Utils.FromArgb(150, Colors.Red);
tChart1.Zoom.Pen.Visible = true;
tChart1.Zoom.Pen.Color = Utils.FromArgb(150, Colors.Blue);
}
Re: No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Fri Oct 06, 2017 3:03 pm
by 15681921
Hello Christopher,
Thank you for the idea.
Unfortunately, it does not change the behavior. There is still no rectangle visible.
Do you have further thoughts how to bring the zoom-rectangle to visibility?
- Maybe change a Z-Order or something special?
- Or using something else instead of the built-in rectangle?
Best, Jens
Re: No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Mon Oct 09, 2017 8:17 am
by Christopher
Hello Jens,
This works in a simple example program using the latest version of TeeChart.WPF.dll. A short GIF of this working can be seen here:
https://drive.google.com/uc?id=0B8CdIOD ... U5NQXVBM2c
can you please confirm that you can reproduce this behavior at your end?
Re: No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Fri Oct 13, 2017 6:03 pm
by 15681921
Hello Christopher,
Sure, the example is working fine in general and when used outside of the target application.
But as soon as I have integrated the example in the COM+ application with .NET wrapper the rectangle is not visible anymore.
Maybe there is a special in the WPF layer of the COM+ application.
So if we have no more ideas to show a zoom-area beside .Zoom.Brush and .Zoom.Pen, I cannot make use of the zoom functionalities here.
Thank you for supporting on this.
Best, Jens
Re: No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Mon Oct 16, 2017 7:38 am
by Christopher
Hello Jens,
The TeeChart.WPF.dll uses
Adorners in its implementation of the Zoom rectangle - I'm not sure if these work in COM+.
Re: No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Mon Oct 16, 2017 9:55 am
by Christopher
Hello again Jens,
Christopher wrote:
The TeeChart.WPF.dll uses
Adorners in its implementation of the Zoom rectangle - I'm not sure if these work in COM+.
could you please upload a very simple example using your COM+ wrapper to:
http://steema.net/upload/
in this way we can have a look at what is happening.
Re: No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Tue Oct 17, 2017 7:59 am
by 15681921
Hello Christopher,
Thank you for sharing the information.
The TeeChart.WPF.dll uses Adorners in its implementation of the Zoom rectangle - I'm not sure if these work in COM+.
It seems to me that this is the reason for not being displayed within my application. Not a problem of Steema's TeeChart, but a problem of the COM+ .NET wrapper.
could you please upload a very simple example using your COM+ wrapper
Unfortunately this is not possible.
We are using a dongle-licensed development environment for an industrial SCADA (control) solution.
Without this environment the WPF is not able to run. And the environment is running the WPF later.
From my perspective you are not in charge to resolve the problem.
Instead, I will forward this topic to the developers of the COM+ SCADA system environment.
They will explain to me why Adorners are not working inside of the .NET wrapper.
So thank you again. I will come back to you if I'm able raising more ideas how to deal with the "not displaying adorners" problem.
Yours, Jens
Re: No visible zoom rectangle with Steema.TeeChart.WPF.Zoom
Posted: Tue Oct 17, 2017 12:33 pm
by Christopher
Hello Jens,
Jens Ramlow wrote:
So thank you again. I will come back to you if I'm able raising more ideas how to deal with the "not displaying adorners" problem.
Thank you Jens for your consideration. Please do not hesitate to let us know if we can be of further help here.