Re: having trouble programmatically selecting CListCtrl item

From:
"David Ching" <dc@remove-this.dcsoft.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Sun, 29 Nov 2009 08:43:13 -0800
Message-ID:
<ORVaMMRcKHA.2596@TK2MSFTNGP04.phx.gbl>
"Tony C." <me@here.com> wrote in message
news:31n3h5hd3t137oiuqs8evhtc9tlq38j1ag@4ax.com...

Looks like I might have to investigate subclassing..


Perhaps not. The parent window of the CListCtrl could implement
NM_CUSTOMDRAW (OnCustomDraw). Windows makes it slightly difficult to paint
the background of the selected item. Here is what I commented in my code
when I attempted to do this:

void CPageNetworks::OnCustomDraw(NMHDR* pNMHDR, LRESULT *pResult)
{
    LPNMLVCUSTOMDRAW lplvcd = (LPNMLVCUSTOMDRAW)pNMHDR;

    // Windows disregards our specified background color, if the item is
    // currently selected. It insists on painting it in the standard
    // COLOR_HIGHLIGHT color. If the item is selected and is the current
    // connection, then we must paint it in the user-specified color (e.g.
yellow).
    // We trick Windows by setting the LVIS_SELECTED state to false.
    // Then Windows will not paint the background in COLOR_HIGHLIGHT color,
    // retaining our color. We must reset the selected state immediately
    // after the painting is done.
    // This idea was found on Codeguru: "Personalizing highlight colors
through custom draw"
    // http://www.codeguru.com/Cpp/controls/listview/article.php/c1035

  ...
}

-- David

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