• ListControl


    一、基本使用
    1.新加ListControl 控件,属性中的style属性页下的View选择Report。
    并设置其对应的控制变量如:m_list1。

    2.初始化,即设置列。     用m_list1。
     m_list1.InsertColumn(0,"曲名");         //插入列
     m_list1.InsertColumn(1,"类型");
     m_list1.InsertColumn(2,"长度");
     m_list1.InsertColumn(3,"路径");

     CRect rect4;
     m_list1.GetClientRect(rect4);                    //获得当前客户区信息
     m_list1.SetColumnWidth(0,rect4.Width()/4);       //设置列的宽度。
     m_list1.SetColumnWidth(1,rect4.Width()/5);
     m_list1.SetColumnWidth(2,rect4.Width()/5);
     m_list1.SetColumnWidth(3,rect4.Width()*8/20);

     这部分初始化操作,最好放在对话框类的OnInitDialog()函数里,自动初始化。

    3.插入数据
            m_list1.InsertItem(0,"大海");      //插入第一个数据,即第0条数据。先插入,然后在修改其他的信息。
            m_list1.SetItemText(0,1,"MP3");    //修改第0条数据的其他信息。
            m_list1.SetItemText(0,2,"4:20");
            m_list1.SetItemText(0,3,"c:\");

    4.删除所有数据
            m_list1.DeleteAllItems();
          
           
                    
    二、其他技巧

    1.如何设置ListView控件的完全行(Full Row)选项。
        这个控件有个地方常常很恼人,那就是在报告视图中选中一行时,它只加亮最左边的一个栏目。
        为了克服这个问题,这里告诉你一个方法:向ListView控件发送一个LVM_SETEXTENDEDLISTVIEWSTYLE消息。
    ::SendMessage(m_list1.m_hWnd, LVM_SETEXTENDEDLISTVIEWSTYLE,LVS_EX_FULLROWSELECT, LVS_EX_FULLROWSELECT);

    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”
    --------------------------------------------------------------------------------
    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
    --------------------------------------------------------------------------------
    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
    --------------------------------------------------------------------------------
    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
    --------------------------------------------------------------------------------
    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);

    --------------------------------------------------------------------------------
    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);

    --------------------------------------------------------------------------------
    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
               }
          }
    --------------------------------------------------------------------------------
    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);
    --------------------------------------------------------------------------------
    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 ;
          }
    --------------------------------------------------------------------------------
    10. 使listctrl中一项可见,即滚动滚动条
        m_list.EnsureVisible(i, FALSE);
    --------------------------------------------------------------------------------
    11. 得到listctrl列数
        int nHeadNum = m_list.GetHeaderCtrl()->GetItemCount();
    --------------------------------------------------------------------------------
    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);
    --------------------------------------------------------------------------------
    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;
          }
    --------------------------------------------------------------------------------
    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;
          }
    --------------------------------------------------------------------------------
    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;
      }
    --------------------------------------------------------------------------------
    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;
          }
    --------------------------------------------------------------------------------
    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(..);
    --------------------------------------------------------------------------------
    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
    //
    }
         
    --------------------------------------------------------------------------------
    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 );
    }

  • 相关阅读:
    node.js的request模块
    PHP实现一个简单url路由功能
    关于seajs
    CodeIgniter集成Smarty
    node.js批量修改图片名
    Node.js创建目录实例
    Bootstrap的表单设计器
    onbeforeunload事件被a链接触发的问题
    Socket.IO + Express实现的跨浏览器、子域的聊天室
    NodeJS获取命令行后面的参数
  • 原文地址:https://www.cnblogs.com/FCoding/p/2560544.html
Copyright © 2020-2023  润新知