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<FONT COLOR="#AOAO99">Class with full row highlighting, dragable headers, sorting</FONT></H3></CENTER>

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<p>This article was contributed by <a
href="mailto:jschub@gator.net">James Schubert</a>. </p>

<p>I needed to add some functionality to my list controls, so of
course, I came to the Code Guru for help. I found several very
good articles on extending the CListCtrl class, but none that
included all of the features I needed. By combining the code from
three of these articles and adding some features of my own, I
have created an easy to use extended list control class.
CListCtrlEx extends CListCtrl by adding full row highlighting,
column header drag and drop, and column sorting. Columns can be
sorted by string(case or no case), number, or date/time. All,
none or any combination of these features can be enabled.</p>

<p>I would like to thank the authors of the following articles:<br>
<a
href="sort_on_col_generic.shtml.htm" tppabs="http://www.codeguru.com/listview/sort_on_col_generic.shtml">Sort
list based on text-numeric-date-time in any column</a> <br>
<a href="sel_row.shtml.htm" tppabs="http://www.codeguru.com/listview/sel_row.shtml">Selection
highlighting of entire row</a> <br>
<a href="drag_col.shtml.htm" tppabs="http://www.codeguru.com/listview/drag_col.shtml">Dragging
columns to rearrange column sequence</a> </p>

<p><a href="listclass1.zip" tppabs="http://www.codeguru.com/listview/listclass1.zip">Download Source</a> (CListCtrlEx.h, and
CListCtrlEx.cpp) 8Kb</p>

<p><strong>To use CListCtrlEx:</strong></p>

<p>1. Add the header to your dialog box header file or StdAfx.h:<br>
<font color="#800000">#include &quot;CListCtrlEx.h&quot;</font><font
color="#990000"><tt>&nbsp;</tt></font></p>

<p>2. Add a CListCtrlEx to your dialog box class where you would
add CListCtrl:<br>
<font color="#800000">CListCtrlEx m_List;</font><font
color="#990000"><tt>&nbsp;</tt></font></p>

<p>3. Initialize the list control in the dialog box OnInitDialog
function to enable the features you want:</p>

<pre><font color="#800000" size="3" face="Times New Roman">BOOL CListDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
		
	//set the column types and enable sorting
	if(m_List.SetColumnTypes(_gnLogColTypes, NUM_LOGCOLUMNS))
		m_List.EnableSort();	</font></pre>

<pre><font color="#800000" size="3" face="Times New Roman">	//set the type of row highlighting
	m_List.SetHighlightType(HIGHLIGHT_ROW);</font></pre>

<pre><font color="#800000" size="3" face="Times New Roman">	//enable drag and drop headers
	m_List.EnableHeaderDrag();</font></pre>

<pre><font color="#800000" size="3" face="Times New Roman">	//set the base time for sorting on a 24 hour clock
	m_List.SetBaseTime(&quot;21:04:00&quot;);</font></pre>

<pre><font color="#800000" size="3" face="Times New Roman">	return TRUE;  
}</font></pre>

<p><font size="3"><strong>Notes:</strong></font></p>

<p><font face="Times New Roman">_gnLogColTypes and NUM_LOGCOLUMNS
are globally defined as follows:</font></p>

<pre><font color="#800000" size="3" face="Times New Roman">#define NUM_LOGCOLUMNS	4</font></pre>

<pre><font color="#800000" size="3" face="Times New Roman">static unsigned char _gnLogColTypes[NUM_LOGCOLUMNS] = 
{
	LVEX_NUM, LVEX_CASE, LVEX_TIME, LVEX_NOCASE
};</font></pre>

<p>If you do not call SetColumnTypes() but you enable sorting,
all columns will be sorted as case sensitive strings. The sorting
types are defined as:</p>

<p>LVEX_NUM: Sort as a number<br>
LVEX_CASE: Sort as a string (case sensitive)<br>
LVEX_NOCASE: Sort as a string (not case sensitive)<br>
LVEX_TIME: Sort as a date/time<br>
LVEX_NOSORT: Do not sort this column</p>

<p>The row highlighting types are defined as:</p>

<p>HIGHLIGHT_NORMAL: Highlight the first column only (default
CListCtrl behavior)<br>
HIGHLIGHT_ALLCOLUMNS: Highlight all columns but not unused space<br>
HIGHLIGHT_ROW: Highlight the entire row including unused space</p>

<p>I added the base clock time feature to fit a very specific
need I had. Most people will probably not have to use it. The
records I display commonly have 24 hour clock times (no date)
beginning in early evening and running to morning (ie: 23:00:00
to 05:00:00) and I needed to sort the time from the starting time
(23:00:00) not by the lowest time. If you do not call
SetBaseTime(), the date/time will be sorted by absolute time.</p>





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