Steema Central

I have up Steema Chart to 6.2025.1.13 and it crashes the app when displaying the main application window which contain five charts.
If i restored to 6.2024.11.6 and it works fine.

at Microsoft.Maui.Graphics.Win2D.W2DCanvasState.ClipPath(PathF path, WindingMode windingMode)
at Microsoft.Maui.Graphics.Win2D.W2DCanvas.ClipPath(PathF path, WindingMode windingMode)
at Steema.TeeChart.Maui.Drawing.CanvasMaui.ClipRectangle(Rect r)
at Steema.TeeChart.Maui.Drawing.Graphics3DBase.Steema.TeeChart.Drawing.IGraphics3D.ClipRectangle(Rectangle r)
at Steema.TeeChart.Tools.Annotation.DrawText(IGraphics3D g)
at Steema.TeeChart.Tools.Annotation.DrawText()
at Steema.TeeChart.Tools.Annotation.ChartEvent(EventArgs e)
at Steema.TeeChart.Tools.BannerTool.ChartEvent(EventArgs e)
at Steema.TeeChart.Chart.BroadcastToolEvent(EventArgs e)
at Steema.TeeChart.Chart.InternalDraw(Boolean noTools)
at Steema.TeeChart.Chart.InternalDraw()
at Steema.TeeChart.Maui.TChart.Draw(ICanvas g, RectF rect)
at Microsoft.Maui.Graphics.Win2D.W2DGraphicsView.OnDraw(CanvasControl sender, CanvasDrawEventArgs args)
at WinRT._EventSource_global__Windows_Foundation_TypedEventHandler_global__Microsoft_Graphics_Canvas_UI_Xaml_CanvasControl__global__Microsoft_Graphics_Canvas_UI_Xaml_CanvasDrawEventArgs_.EventState.<GetEventInvoke>b__1_0(CanvasControl sender, CanvasDrawEventArgs args)
at ABI.Windows.Foundation.TypedEventHandler`2.Do_Abi_Invoke[TSenderAbi,TResultAbi](Void* thisPtr, TSenderAbi sender, TResultAbi args)

Using Visual Studio : Microsoft Visual Studio Community 2022 (ARM 64-bit) - Preview
Version 17.13.0 Preview 5.0

DotNet : 9
MauiControl : 9.0.30
CommunityToolKit : 10.030

Hello,
can you pleae tell us in which platform this happens to you (windows, android or ios) ?

Thanks

Sorry, I took so long to response.

Windows !

Ok, no problem, let us do some checks here and back to you asap.

Thanks

Hello,
could you please share me the code you're using ? or just tell me which series types you're drawing ?
I've been trying to reproduce the problem by usign some series types and all worked fine.
Maybe it's happenning at the time to draw something on canvas ?

Thanks

After much research, the problem is caused by the use of your BannerTool.

I was dynamically creating a BannerTool in the ViewModel's InitializingChartControl() which is called in my constructor of the View.

If I comment out the creation and references to it, the application runs fine.

Sample creation code:
_BannerTool = new BannerTool(Chart);

_BannerTool.Shape.Color = System.Drawing.Color.Transparent;
_BannerTool.Shape.Font.Color = System.Drawing.Color.LightGray;
_BannerTool.Shape.Font.Size = 15;
_BannerTool.Shape.Shadow.Visible = false;
_BannerTool.Shape.Pen.Visible = false;
_BannerTool.Position = AnnotationPositions.Center;
_BannerTool.TextAlign = Steema.TeeChart.Drawing.StringAlignment.Center;
_BannerTool.Text = "";

Hope this help you!

Hello,
it's strange, because I've just checked and it's working fine here by using a BannerTool.
Please, can you check if the attached sample demo that uses the code you sent to me, is working fine to you ?
Thanks

Your sample runs fine on my box.

Our application consists of 43 projects
It is a very large and complex application, so sending it to you is out of the question.

Hope to try to find some more time next week, to try narrow doing what else mine be contributing to the problem, but I am sure it connected to the usage of the BannerTool.

What source code BannerTool changes were made on your end between the previous and latest release of TChart. That is the only clue, I can give you at this time. Hopefully this helps.

Hello,

thanks for your answer.
Sure, check in the case that you have time and let me know.

We've not done any special change in Banner Tool between latest version and the previous one, but I think that problem might be related to specific custom drawing on canvas.

In the case that you are drawing specific texts on canvas by using OnAfterDraw event or similar, just let me know, I think this could be related. This problem might happen when trying to draw addicional objects on canvas, and need to be fixed.

Thanks