Error: Control 'Chart1' has no parent window

TeeChart VCL for Borland/CodeGear/Embarcadero RAD Studio, Delphi and C++ Builder.
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Rob
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Error: Control 'Chart1' has no parent window

Post by Rob » Mon Aug 01, 2022 8:18 pm

I have an error using TChart with BarGraph and fastline.
Just add a graph to an empty form.
Add: Series1 = BarGraph
Add: Series2=Fastline (Datasource=Function Avergae) source Series1.
Render is GDI
Then Press <ALT>+F12 (show dfm) and you have the error

The error also occure at runtime in my application when closing the form. De prevent this error I Free the chart in the OnDestroy of the form.

Delphi 11.1
TeeChartPro v2022.34.220329 VCL

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[5B7C2DD9]{vcl280.bpl } Vcl.Graphics.TCanvas.GetHandle (Line 4237, "Vcl.Graphics.pas" + 2) + $B
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[51E5D269]{Tee928.bpl } Vcltee.Series.TCustomBarSeries + $3D
[5005FE34]{rtl280.bpl } System.TObject.Free (Line 17989, "System.pas" + 1) + $4
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[51E38367]{Tee928.bpl } Vcltee.Chart.TCustomChart + $6B
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[5B921BA5]{vcl280.bpl } Vcl.Forms.TCustomForm.Destroy (Line 4112, "Vcl.Forms.pas" + 31) + $A
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[5005FE34]{rtl280.bpl } System.TObject.Free (Line 17989, "System.pas" + 1) + $4
[5A3C50E6]{vcldesigner280.bpl} VCLFormDesigner.TVCLRootDesigner.FreeRoot (Line 581, "VCLFormDesigner.pas" + 0) + $2
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[20F72B95]{designide280.bpl} ComponentDesigner.TComponentRoot.Close (Line 5988, "ComponentDesigner.pas" + 5) + $5
[21CE6E68]{delphicoreide280.bpl} DelphiModule.TPascalCodeMgrModHandler.Destroyed (Line 753, "DelphiModule.pas" + 11) + $5
[207BE0DD]{coreide280.bpl} DocModul.TCodeIDocModule.NotifyDestroyed (Line 2468, "DocModul.pas" + 2) + $5
[20F4B7FB]{designide280.bpl} ToolUtils.ForEach (Line 116, "ToolUtils.pas" + 9) + $F
[207BE04E]{coreide280.bpl} DocModul.TCodeIDocModule.NotifyDestruction (Line 2452, "DocModul.pas" + 2) + $B
[207BAFB8]{coreide280.bpl} DocModul.TDocModule.BeforeDestruction (Line 1022, "DocModul.pas" + 16) + $0
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[205E2C6A]{coreide280.bpl} SourceModule.TSourceModule.Destroy (Line 439, "SourceModule.pas" + 0) + $2
[5005FE34]{rtl280.bpl } System.TObject.Free (Line 17989, "System.pas" + 1) + $4
[207BC256]{coreide280.bpl} DocModul.WalkDependencies (Line 1660, "DocModul.pas" + 9) + $2
[207BC2A1]{coreide280.bpl} DocModul.TDocModule.WalkDependencies (Line 1669, "DocModul.pas" + 1) + $1
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[5B7CF9FE]{vcl280.bpl } Vcl.ActnList.TCustomAction.Execute (Line 284, "Vcl.ActnList.pas" + 19) + $35
[50173A4B]{rtl280.bpl } System.Classes.TBasicActionLink.Execute (Line 17777, "System.Classes.pas" + 2) + $7
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Marc
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Re: Error: Control 'Chart1' has no parent window

Post by Marc » Mon Aug 08, 2022 10:13 am

Hello,

I can't reproduce this problem straight-off. I created a new VCL Forms project in RAD Studio 11 using TeeChart v2022.34.220329 and added a Bar and FastLine Series using the Editor. I then set the Fastline datasource to Function:Average and the source as Series1.

I ran the project and it compiled, ran and closed correctly when required.

Please check that you don't have any old TeeChart source linked somewhere on the search path. If in doubt please send us an example project that reproduces the problem and we'll take a look.

Regards,
Marc Meumann
Steema Support

Yeray
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Location: Girona, Catalonia
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Re: Error: Control 'Chart1' has no parent window

Post by Yeray » Thu Sep 01, 2022 8:13 am

Hello,

I've been able to reproduce the problem so I've added it to the public tracker (#2546) and I've fixed it for the next maintenance release.
Best Regards,
ImageYeray Alonso
Development & Support
Steema Software
Av. Montilivi 33, 17003 Girona, Catalonia (SP)
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