ListCtrl 技巧集

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);

           }

      }

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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 ); 

 }