Re: Using SHGetFileInfo causes Assertion

From:
"AliR \(VC++ MVP\)" <AliR@online.nospam>
Newsgroups:
microsoft.public.vc.mfc
Date:
Thu, 16 Apr 2009 13:59:37 -0500
Message-ID:
<qfLFl.29221$ZP4.9006@nlpi067.nbdc.sbc.com>
When the assert comes up hit Retry. That should take to the line with the
ASSERT on it.

Are you sure that your listcontrol has a valid handel when you are calling
your method?

BOOL CMyListView::GetSysImgList()
{
SHFILEINFO shFinfo;
HIMAGELIST hImgList = NULL;

CListCtrl& m_listCtrl = GetListCtrl( );


m_ is generally only used for member variables, it is confusing when you
give m_ names to stack variables.

if ( m_listCtrl.GetImageList( TVSIL_NORMAL ) )
    m_imgList.Detach();


why are you detaching whats in your m_imgList? Should you destroy it if you
don't want to use it anymore?

hImgList = (HIMAGELIST)SHGetFileInfo( _T("C:\\"), 0, &shFinfo, sizeof
( SHFILEINFO ), SHGFI_SYSICONINDEX | SHGFI_SMALLICON);

if ( !hImgList )
{
     m_strError = "Cannot retrieve the Handle of SystemImageList!";
     return FALSE;
}

if ( !m_imgList.Attach( hImgList ) )
{
  m_strError = "Cannot Attach SystemImageList-Handle";
  return FALSE;
}

m_listCtrl.SetImageList( &m_imgList, LVSIL_SMALL );
return TRUE; // OK
}


AliR.

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