Access violation using 7.0.1.2

[Bob Praster]

Hi there,

I just updated from ActiveX TChart 7.0.0.3 to 7.0.1.2 and I’m unable to perform the following statement:

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m_pChart->Series(lSerie)->asArea->UseYOrigin = true;

IAreaSeries::PutUseYOrigin is causing an access violation.

I did some research and tried using

Code: Select all

aSeries[lSerie]

but still the same access violation. I’m using Visual Studio .NET 2003.

Here’s some code:

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m_pChart->AddSeries(scArea);
m_pChart->Series[lSerie]->asArea->Stairs = true;
m_pChart->Series(lSerie)->asArea->UseYOrigin = true;
m_pChart->Series(lSerie)->XValues->DateTime = true;
m_pChart->Series(lSerie)->VerticalAxisCustom = m_Axis2;

[Bob Praster]

The problem seems to be that I'm unable to change properties of IAreaSeries like UseYOrigin and AreaPen.

asArea->Stairs = true works perfectly because Stairs is derived from ICustomSeries.

Why am I unable to change IAreaSeries properties? I couldn't find my answer in the releasenotes.

[Narcís]

Hi Bob,

Have you tried using:

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	m_pChart->Series(lSerie)->GetasArea()->SetUseYOrigin(true);

[Bob Praster]

Hi Narcis,

I haven’t tried that one before.

This morning I uninstalled 7.0.1.2 and installed 7.0.0.8 and came to the conclusion that my application works fine with that one. Than I read your reply so I uninstalled 7.0.0.8 and reinstalled 7.0.1.2 and suddenly everything works fine !

I ask myself what’s the chance of the happening in the future because I still don’t know exactly what went wrong.

For the next couple of days I’ll be busy testing my application using 7.0.0.8. After that maybe I’ll post some questions or comments.

For now on, tanx!