Property Grid - HOWTO: v19.3 - CXTPPropertyGridEnum

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HOWTO: v19.3 - CXTPPropertyGridEnum - how to empty

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Forum Name: Property Grid
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URL: http://forum.codejock.com/forum_posts.asp?TID=24059
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Topic: HOWTO: v19.3 - CXTPPropertyGridEnum - how to empty

Posted By: mgampi
Subject: HOWTO: v19.3 - CXTPPropertyGridEnum - how to empty
Date Posted: 21 September 2020 at 3:36am

Hi;

After migration to v19.3, we no longer can 'empty' an enum property.

In older toolkit versions we set -1 in ctor and/or to the SetEnum() funtion. This does the trick.

In v19.3 we get an assert and the display value is not empty anymore.

BTW: The signature and implementation of the SetEnum function is not consistent:

void CXTPPropertyGridItemEnum::SetEnum(int nValue)
{
    m_nValue = nValue;

    if (m_pBindEnum)
    {
        *m_pBindEnum = nValue;
    }

    int nIndex = m_pConstraints->FindConstraint(XTPToULongPtrChecked(nValue));
    CXTPPropertyGridItem::SetValue(m_pConstraints->GetAt(nIndex));
}

Can you see the int --> unsigned long --> int conversion?

Why?

-------------
Martin

Product: Xtreme Toolkit v 19.0.0, new Projects v 19.1.0
Platform: Windows 10 v 1909 (64bit)
Language: VC++ 2017

Replies:

Posted By: mgampi
Date Posted: 01 June 2021 at 10:25am

Hello!

What about this issue? We still see the problem in 19.2 and 19.3.

Anyone else?

How to fix it?

-------------
Martin

Product: Xtreme Toolkit v 19.0.0, new Projects v 19.1.0
Platform: Windows 10 v 1909 (64bit)
Language: VC++ 2017