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Dear Support Team,

I have a strange behaviour of the CExtListCtrl in my application. It is a simple dialog based app. Beside other controls, I am using a CExtListCtrl in report style. The List control is decorated with the CExtNCSB<> template. When the app starts the header of the columns are all in ’old’ style (e.g. not themed). When I hover them with the mouse they get painted correctly.

There is a difference in the behaviour between the architecures and configurations:

Release-x86, Debug-x86, Debug-x64: as described above

Release-x64: besides the wrong theme, the hovering causes the them to be correct but deletes the text in the header and also when resizing the column width the app crashes.

 I have a simplified version of the app. Maybe that helps. I’ll email the app since I don’t find a way to attach it to this post.

I am using v2.89.

Looking forward to your answer. Thanks in advance.

Torsten

We fixed the CExtHeaderCtrl crashes in x64 version. Could you drop us an e-mail to the support mail box at this web site so we will provide you with the source code update.

Thanks for the response. That successfully fixed the first problem with painting the themed headers.

We do still have two problems:

- now the headers do not have text on it at all (since we used the patch)

- when resizing the columns the software crashes (this also happens in the ProfUIS_Controls example)

These problems only occur in the Relase MBCS x64 configurtaion. It runs on a Win7 x64 computer.

Torsten

Thank you for reporting us this issue. To fix it, please update the source code for the following method:

bool CExtListCtrl::_Init()
{
CExtHeaderCtrl & wndHeader = m_wndHeaderCtrl;
            if( wndHeader.GetSafeHwnd() != NULL )
                        return true;
            if( ! wndHeader.SubclassWindow( GetDlgItem(0)->GetSafeHwnd()) )
                        return false;
            wndHeader.Invalidate();
            return true;
}