Codejock Developer Community : HOWTO: v19.3 - CXTPPropertyGridEnum - how to empty http://forum.codejock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 19 Apr 2026 01:50:44 +0000 Tue, 01 Jun 2021 10:25:53 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 forum.codejock.com/RSS_post_feed.asp?TID=24059 <![CDATA[Codejock Developer Community]]> http://forum.codejock.com/forum_images/codejock-logo.gif http://forum.codejock.com/ <![CDATA[HOWTO: v19.3 - CXTPPropertyGridEnum - how to empty : Hello!What about this issue? We...]]> http://forum.codejock.com/forum_posts.asp?TID=24059&PID=78113&title=howto-v19-3-cxtppropertygridenum-how-to-empty#78113 Author: mgampi
Subject: 24059
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?]]> Tue, 01 Jun 2021 10:25:53 +0000 http://forum.codejock.com/forum_posts.asp?TID=24059&PID=78113&title=howto-v19-3-cxtppropertygridenum-how-to-empty#78113 <![CDATA[HOWTO: v19.3 - CXTPPropertyGridEnum - how to empty : Hi;After migration to v19.3, we...]]> http://forum.codejock.com/forum_posts.asp?TID=24059&PID=77854&title=howto-v19-3-cxtppropertygridenum-how-to-empty#77854 Author: mgampi
Subject: 24059
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?

]]> Mon, 21 Sep 2020 03:36:37 +0000 http://forum.codejock.com/forum_posts.asp?TID=24059&PID=77854&title=howto-v19-3-cxtppropertygridenum-how-to-empty#77854