📄 sel_item_range.shtml.htm

📁 mfc资料集合5
💻 HTM
字号:
<HTML>
<HEAD>
   <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
   <META NAME="Author" CONTENT="Zafir Anjum">
   <META NAME="GENERATOR" CONTENT="Mozilla/4.0 [en] (WinNT; I) [Netscape]">
   <TITLE>Selecting and deselecting a range of rows</TITLE>
</HEAD>
<body background="../fancyhome/back.gif" tppabs="http://www.codeguru.com/fancyhome/back.gif" bgcolor="#FFFFFF" link="#B50029" vlink="#8E2323" alink="#FF0000" bgproperties="fixed">
<table WIDTH="100%">
<tr WIDTH="100%">
<td><td>
</tr>
</table>


<CENTER>
<H3>
<FONT COLOR="#AOAO99">Selecting and deselecting a range of rows</FONT></H3></CENTER>

<HR WIDTH="100%">The list box control class has a selection function SelItemRange().
This function, though missing in the CListCtrl class, is easily implemented.
<PRE><TT><FONT COLOR="#990000">// SelItemRange - Selects/Deselect a range of items
// Returns&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - The number of new items selected
// bSelect&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - TRUE to select, FALSE to deselect
// nFirstItem&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - index of first item to select
// nLastItem&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - index of last item to select
int CMyListCtrl::SelItemRange(BOOL bSelect, int nFirstItem, int nLastItem)
{
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // make sure nFirstItem and nLastItem are valid
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if( nFirstItem >= GetItemCount() || nLastItem >= GetItemCount() )
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return 0;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int nItemsSelected = 0;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int nFlags = bSelect ? 0 : LVNI_SELECTED;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; int nItem = nFirstItem - 1;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; while( (nItem = GetNextItem( nItem, nFlags )) >=0
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp;&amp; nItem &lt;= nLastItem )
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; nItemsSelected++;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; SetItemState(nItem, bSelect ? LVIS_SELECTED : 0, LVIS_SELECTED );
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return nItemsSelected;
}</FONT></TT></PRE>


<P>
<HR>
<TABLE BORDER=0 WIDTH="100%" >
<TR>
<TD WIDTH="33%"><FONT SIZE=-1><A HREF="../index.htm" tppabs="http://www.codeguru.com/">Goto HomePage</A></FONT></TD>

<TD WIDTH="33%">
<CENTER><FONT SIZE=-2>&copy; 1997 Zafir Anjum</FONT>&nbsp;</CENTER>
</TD>

<TD WIDTH="34%">
<DIV ALIGN=right><FONT SIZE=-1>Contact me: <A HREF="mailto:zafir@home.com">zafir@home.com</A>&nbsp;</FONT></DIV>
</TD>
</TR>
</TABLE>
<CENTER>&nbsp;<IMG SRC="../cgi/Count.cgi-ft=2&dd=E-df=lv_sel_item_range.cnt" tppabs="http://www.codeguru.com/cgi/Count.cgi?ft=2&dd=E%7cdf=lv_sel_item_range.cnt" ALIGN="BOTTOM" BORDER="0"></CENTER>
</BODY>
</HTML>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -