ListControl操作

1. ListCtrl 风格
      LVS_ICON: 为每个item显示大图标
      LVS_SMALLICON: 为每个item显示小图标
      LVS_LIST: 显示一列带有小图标的item
      LVS_REPORT: 显示item详细资料
      直观的理解：windows资源管理器，“查看”标签下的“大图标，小图标，列表，详细资料”
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2. 设置listctrl 风格及扩展风格
      LONG lStyle;
      lStyle = GetWindowLong(m_list.m_hWnd, GWL_STYLE);//获取当前窗口style
      lStyle &= ~LVS_TYPEMASK; //清除显示方式位
      lStyle |= LVS_REPORT; //设置style
      SetWindowLong(m_list.m_hWnd, GWL_STYLE, lStyle);//设置style

      DWORD dwStyle = m_list.GetExtendedStyle();
      dwStyle |= LVS_EX_FULLROWSELECT;//选中某行使整行高亮（只适用与report风格的listctrl）
      dwStyle |= LVS_EX_GRIDLINES;//网格线（只适用与report风格的listctrl）
      dwStyle |= LVS_EX_CHECKBOXES;//item前生成checkbox控件
      m_list.SetExtendedStyle(dwStyle); //设置扩展风格
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3. 插入数据
      m_list.InsertColumn( 0, "ID", LVCFMT_LEFT, 40 );//插入列
      m_list.InsertColumn( 1, "NAME", LVCFMT_LEFT, 50 );
      int nRow = m_list.InsertItem(0, “11”);//插入行
      m_list.SetItemText(nRow, 1, “jacky”);//设置数据
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4. 一直选中item
    选中style中的Show selection always，或者在上面第2点中设置LVS_SHOWSELALWAYS
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5. 选中和取消选中一行
    int nIndex = 0;
    //选中
    m_list.SetItemState(nIndex, LVIS_SELECTED|LVIS_FOCUSED, LVIS_SELECTED|LVIS_FOCUSED);
    //取消选中
    m_list.SetItemState(nIndex, 0, LVIS_SELECTED|LVIS_FOCUSED);

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6. 得到listctrl中所有行的checkbox的状态
      m_list.SetExtendedStyle(LVS_EX_CHECKBOXES);
      CString str;
      for(int i=0; i<m_list.GetItemCount(); i )
      {
           if( m_list.GetItemState(i, LVIS_SELECTED) == LVIS_SELECTED || m_list.GetCheck(i))
           {
                str.Format(_T("第%d行的checkbox为选中状态"), i);
                AfxMessageBox(str);
           }
      }

CString strIns;
strIns="delete from tmpStatByGround";
m_pRs.CreateInstance(__uuidof(Recordset));
m_pRs->CursorLocation = adUseClient;
m_pRs->Open((LPCTSTR)strIns, vDispatch, adOpenKeyset,
adLockOptimistic, adCmdUnknown);

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7. 得到listctrl中所有选中行的序号
      方法一：
      CString str;
      for(int i=0; i<m_list.GetItemCount(); i )
      {
           if( m_list.GetItemState(i, LVIS_SELECTED) == LVIS_SELECTED )
           {
                str.Format(_T("选中了第%d行"), i);
                AfxMessageBox(str);
           }
      }
      方法二：
      POSITION pos = m_list.GetFirstSelectedItemPosition();
      if (pos == NULL)
           TRACE0("No items were selected!\n");
      else
      {
           while (pos)
           {
                int nItem = m_list.GetNextSelectedItem(pos);
                TRACE1("Item %d was selected!\n", nItem);
                // you could do your own processing on nItem here
           }
      }
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8. 得到item的信息
      TCHAR szBuf[1024];
      LVITEM lvi;
      lvi.iItem = nItemIndex;
      lvi.iSubItem = 0;
      lvi.mask = LVIF_TEXT;
      lvi.pszText = szBuf;
      lvi.cchTextMax = 1024;
      m_list.GetItem(&lvi);
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9. 得到listctrl的所有列的header字符串内容
      LVCOLUMN lvcol;
      char  str[256];
      int   nColNum;
      CString  strColumnName[4];//假如有4列
      nColNum = 0;
      lvcol.mask = LVCF_TEXT;
      lvcol.pszText = str;
      lvcol.cchTextMax = 256;
      while(m_list.GetColumn(nColNum, &lvcol))
      {
           strColumnName[nColNum] = lvcol.pszText;
           nColNum ;
      }
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10. 使listctrl中一项可见，即滚动滚动条
    m_list.EnsureVisible(i, FALSE);
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11. 得到listctrl列数
    int nHeadNum = m_list.GetHeaderCtrl()->GetItemCount();
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12. 删除所有列
      方法一：
         while ( m_list.DeleteColumn (0))
       因为你删除了第一列后，后面的列会依次向上移动。
      方法二：
      int nColumns = 4;
      for (int i=nColumns-1; i>=0; i--)
          m_list.DeleteColumn (i);
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13. 得到单击的listctrl的行列号
      添加listctrl控件的NM_CLICK消息相应函数
      void CTest6Dlg::OnClickList1(NMHDR* pNMHDR, LRESULT* pResult)
      {
           // 方法一：
           /*
           DWORD dwPos = GetMessagePos();
           CPoint point( LOWORD(dwPos), HIWORD(dwPos) );
 
           m_list.ScreenToClient(&point);
 
           LVHITTESTINFO lvinfo;
           lvinfo.pt = point;
           lvinfo.flags = LVHT_ABOVE;
   
           int nItem = m_list.SubItemHitTest(&lvinfo);
           if(nItem != -1)
           {
                CString strtemp;
                strtemp.Format("单击的是第%d行第%d列", lvinfo.iItem, lvinfo.iSubItem);
                AfxMessageBox(strtemp);
           }
          */
 
          // 方法二:
          /*
           NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
           if(pNMListView->iItem != -1)
           {
                CString strtemp;
                strtemp.Format("单击的是第%d行第%d列",
                                pNMListView->iItem, pNMListView->iSubItem);
                AfxMessageBox(strtemp);
           }
          */
           *pResult = 0;
      }
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14. 判断是否点击在listctrl的checkbox上
      添加listctrl控件的NM_CLICK消息相应函数
      void CTest6Dlg::OnClickList1(NMHDR* pNMHDR, LRESULT* pResult)
      {
           DWORD dwPos = GetMessagePos();
           CPoint point( LOWORD(dwPos), HIWORD(dwPos) );
 
           m_list.ScreenToClient(&point);
 
           LVHITTESTINFO lvinfo;
           lvinfo.pt = point;
           lvinfo.flags = LVHT_ABOVE;
   
           UINT nFlag;
           int nItem = m_list.HitTest(point, &nFlag);
           //判断是否点在checkbox上
           if(nFlag == LVHT_ONITEMSTATEICON)
           {
                AfxMessageBox("点在listctrl的checkbox上");
           }
           *pResult = 0;
      }
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15. 右键点击listctrl的item弹出菜单
      添加listctrl控件的NM_RCLICK消息相应函数
      void CTest6Dlg::OnRclickList1(NMHDR* pNMHDR, LRESULT* pResult)
      {
           NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
           if(pNMListView->iItem != -1)
           {
                DWORD dwPos = GetMessagePos();
                CPoint point( LOWORD(dwPos), HIWORD(dwPos) );
  
                CMenu menu;
                VERIFY( menu.LoadMenu( IDR_MENU1 ) );
                CMenu* popup = menu.GetSubMenu(0);
                ASSERT( popup != NULL );
                popup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y, this );
           }
           *pResult = 0;
  }
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16. item切换焦点时(包括用键盘和鼠标切换item时)，状态的一些变化顺序
      添加listctrl控件的LVN_ITEMCHANGED消息相应函数
      void CTest6Dlg::OnItemchangedList1(NMHDR* pNMHDR, LRESULT* pResult)
      {
           NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
           // TODO: Add your control notification handler code here
  
           CString sTemp;

           if((pNMListView->uOldState & LVIS_FOCUSED) == LVIS_FOCUSED &&
            (pNMListView->uNewState & LVIS_FOCUSED) == 0)
           {
                sTemp.Format("%d losted focus",pNMListView->iItem);
           }
           else if((pNMListView->uOldState & LVIS_FOCUSED) == 0 &&
               (pNMListView->uNewState & LVIS_FOCUSED) == LVIS_FOCUSED)
           {
                sTemp.Format("%d got focus",pNMListView->iItem);
           }

           if((pNMListView->uOldState & LVIS_SELECTED) == LVIS_SELECTED &&
            (pNMListView->uNewState & LVIS_SELECTED) == 0)
           {
                sTemp.Format("%d losted selected",pNMListView->iItem);
           }
           else if((pNMListView->uOldState & LVIS_SELECTED) == 0 &&
            (pNMListView->uNewState & LVIS_SELECTED) == LVIS_SELECTED)
           {
                sTemp.Format("%d got selected",pNMListView->iItem);
           }
  
           *pResult = 0;
      }
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17. listctrl的  subitem 添加图标
      注意: 首先要用 InsertItem() 插入一行的第一列, 然后才能用 SetItem 设置其他项
      m_list.SetExtendedStyle(LVS_EX_SUBITEMIMAGES);
      m_userlist.SetItem(..);
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18. 在CListCtrl显示文件，并根据文件类型来显示图标
      网上找到的代码，自己试用并改正过, share
步骤1: 设置 list 的图像列表为 系统图像列表  
BOOL SetSystemImageList( CListCtrl & list )
{    
HIMAGELIST himlSmall;
HIMAGELIST himlLarge;
SHFILEINFO sfi;
char  cSysDir[MAX_PATH];
CString  strBuf;
memset(cSysDir, 0, MAX_PATH);
GetWindowsDirectory(cSysDir, MAX_PATH);
strBuf = cSysDir ;

// SHGetFileInfo:
// If uFlags contains SHGFI_SYSICONINDEX, the return value is a handle to
// an image list that contains the large icon images.
// If SHGFI_SMALLICON is included with SHGFI_SYSICONINDEX, the return value
// is the handle to an image list that contains the small icon images.
//
himlSmall = (HIMAGELIST)SHGetFileInfo ( (LPCSTR)cSysDir,
     0,
     &sfi,
     sizeof(SHFILEINFO),
     SHGFI_SYSICONINDEX | SHGFI_SMALLICON );
himlLarge = (HIMAGELIST)SHGetFileInfo((LPCSTR)cSysDir,
     0,
     &sfi,
     sizeof(SHFILEINFO),
     SHGFI_SYSICONINDEX | SHGFI_LARGEICON);
if (himlSmall && himlLarge)
{
  ::SendMessage(list.m_hWnd, LVM_SETIMAGELIST,
      (WPARAM)LVSIL_SMALL, (LPARAM)himlSmall);
 
  ::SendMessage(list.m_hWnd, LVM_SETIMAGELIST,
      (WPARAM)LVSIL_NORMAL, (LPARAM)himlLarge);
}
return TRUE;
}
步骤2:  给列表添加指定的文件, 同时获得该文件的的图标索引, 给 list 添加图标
int GetIconIndex(LPCTSTR lpszPath, BOOL bIsDir, BOOL bSelected) ; //  向前声明
void AddFiles(CListCtrl & list, LPCTSTR lpszFileName, BOOL bAddToDocument)
{
int nIcon = GetIconIndex(lpszFileName, FALSE, TRUE);
CString strSize;
CFileFind filefind;
//  get file size
if ( filefind.FindFile(lpszFileName))
{
  filefind.FindNextFile();
  strSize.Format("%d", filefind.GetLength());
}
else
  strSize = "0";
// split path and filename
CString strFileName = lpszFileName;
CString strPath;
int nPos = strFileName.ReverseFind('\\');
if (nPos != -1)
{
  strPath = strFileName.Left(nPos);
  strFileName = strFileName.Mid(nPos 1);
}
// insert to list
int nItem = list.GetItemCount();


//list.InsertItem(nItem, strFileName, nIcon);
//list.SetItemText(nItem, 1, strSize);
//
// 此处可以根据实际需要修改代码
//
}
    
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19. listctrl内容进行大数据量更新时，避免闪烁
      m_list.SetRedraw(FALSE);
      //更新内容
      m_list.SetRedraw(TRUE);
      m_list.Invalidate();
      m_list.UpdateWindow();
20. 清除 ListCtrl 以重新初始化:
      // 删除所有行
m_ctrllist.DeleteAllItems() ;   
// 删除所有列
int iColCount = m_ctrllist.GetHeaderCtrl()->GetItemCount() ;

// 方法 1
// 原理: 删除第一列后, 其他列向前移动
while( m_ctrllist.DeleteColumn(0) ) ;
  
// 方法 2
for (int i=0; i < iColCount ; i )
{
  m_ctrllist.DeleteColumn(0);
}
// 方法 3
for (int i=iColCount-1; i >= 0; i-- )
{
  m_ctrllist.DeleteColumn( i );
}