使VC中CListBox带有复选框

使VC中CListBox带有复选框

    由于实际需要在项目中需要使用一个带有复选框的列表控件，没错，VB、Delphi……里现成就有，但由于项目是VC工程，VC里现成的CListBox或CListCtrl都没有复选框。说到这里，高手们可能会说，简单，自已重绘一个，或者偷懒一点的方法，也可以去网上找一个别人做好现成的类来用。 
其实还有一个更轻松的方法，网上找到这样一段话： 
 How   to   use   the   CCheckListBox   class   in   a   dialog   box        
     
  Create   in   your   resource   file   an   ordinary   list   box   in   a   dialog   box.   Whichever   other   attributes   that   you   choose,   the   list   box   must   be   ownerdrawn   and   include   the   hasstrings   attribute.   Assume   that   in   this   case,   you   have   assigned   an   ID   of   IDC_CHECKLISTBOX   to   the   listbox   .    
     
  Create   an   instance   of   a   CCheckListBox   object   in   the   header   file   of   your   dialog   box.    
     
          CCheckListBox   m_CheckListBox;    
  Over-ride   OnInitDialog()   in   your   dialog   box   and   subclass   the   list   box   that   you   created   in   your   resource   file.   Set   the   style   of   the   check   box   as   you   wish.   See   the   documentation   provided   with   your   compiler.    
     
          m_CheckListBox.SubclassDlgItem(IDC_CHECKLISTBOX,   this);    

          m_CheckListBox.SetCheckStyle(BS_AUTOCHECKBOX);    
  Since   CCheckListBox   is   derived   from   CListBox,   you   have   access   to   all   the   class   members   of   CListBox.   Add   strings   to   the   list   box   using   AddString()   as   follows.    
     
          m_CheckListBox.AddString("Test   String");    
  CCheckListBox   provides   several   class   members   that   allow   you   to   access   or   set   the   check   state   of   the   items   in   the   list   box.   For   example,   to   see   whether   the   first   item   in   the   list   box   is   checked   (the   index   of   the   first   item   would   be   zero),   use   GetCheck().    
     
          int   iIndex   =   0;    
          int   iState;    
          iState   =   m_CheckListBox.GetCheck(iIndex);   
方法很巧，移花接木。 
MFC有一个CCheckListBox类支持复选框风格，所以我们可以直接使用ListBox控件，然后初始化时把它子类化成CCheckListBox，再设置一下风格参数就行。但要注意一下，成功的关键是要修改ListBox控件的两处属性，分别是Owner draw设置为Fixed（LBS_OWNERDRAWFIXED），Has strings设置为True（LBS_HASSTRINGS），否则不成功，运行时报错。 
具体实现步骤举例如下―― 
1、首先在窗口上拖放一个ListBox控件，假设其资源ID为IDC_LIST1； 
2、如上所述修改该ListBox控件的属性（LBS_OWNERDRAWFIXED | LBS_HASSTRINGS）； 
3、定义CCheckListBox对象，在窗口类的头文件里；