有关类ListCtrl 详细用法

 

先来介绍REPORT类型的CListCtrl:
首先使用下面的语句设置CListCtrl的style:
DWORD SetExtendedStyle( DWORD dwNewStyle );
其中
LVS_EX_CHECKBOXES 表示添加CheckBox
LVS_EX_FULLROWSELECT 表示选择整行
LVS_EX_GRIDLINES 表示添加表格线

如果设置了LVS_EX_CHECKBOXES属性,则可以用
BOOL GetCheck( int nItem ) const;
来得到某一行是否Checked。

可以先用下面的语句来删除以前的东西:
for(int k=2;k>=0;k--) //注意要从后往前删,否则出错
m_ListCtrl.DeleteColumn(k);
m_ListCtrl.DeleteAllItems();

用下面的语句新建列:
m_ListCtrl.InsertColumn(0,_T("文件名"),LVCFMT_IMAGE|LVCFMT_LEFT);
m_ListCtrl.InsertColumn(1,_T("仪器类别"));
m_ListCtrl.InsertColumn(2,_T("项目类别"));

其中LVCFMT_IMAGE表示可以在第一列加入图标。如果不要图标可以删去。

然后设置列宽:
for(j=0;j<3;j++)
m_ListCtrl.SetColumnWidth(j ,100);

以下为列表加入图标,如果不需要图标,可以跳过这一步。注意只在第一次加入,如果多次加入会出错!
先在头文件中加入声明:
CImageList m_ImageList;
这是必要的,如果在cpp的某个函数中加入由于生命期结束,CImageList自动释放,则效果是列表中看不到图标,只看到一个白方块。
下面生成CImageList,并将其绑定到CListCtrl中,这是CImageList中还没有图标,只是一个容器:
static int flag=2;
if(flag==2){//只调用一次SetImageList,否则出错
m_ImageList.Create(128, 128, ILC_COLORDDB|ILC_MASK, 20, 1);
m_ListCtrl.SetImageList(&m_ImageList,LVSIL_SMALL);
}
flag=(flag+1)%2;
如果CListCtrl已经用过,曾经加过图标进去,这时就要删除上次放进m_ImageList中的Image
for(int kk=0;kk<m_ImageList.GetImageCount();kk++)
m_ImageList.Remove(k);

下面介绍如何向CListCtrl里面加入行,并同时为每一行动态加入图标:
假设m_listRowCount为要加入的行数。
CBitmap* bitmap;
bitmap=new CBitmap[m_list1rowCount];
HBITMAP hbitmap;

for(int i = 0; i < m_listRowCount; i++)
{
//为每一行插入相应的缩略图
CFile f;
CFileException e;
if( !f.Open(m_FileName, CFile::modeRead, &e )){ //m_FileName为bmp文件名,由你来定
   hbitmap = (HBITMAP)LoadImage(NULL,path+"blank.bmp",IMAGE_BITMAP,0,0,
    LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE);
}else{
   f.Close();
   hbitmap = (HBITMAP)LoadImage(NULL,bmpFile,IMAGE_BITMAP,0,0,
    LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE);
}
bitmap[i].Attach(hbitmap);
m_ImageList.Add(&bitmap[i], RGB(0, 128, 128));

//插入行
m_ListCtrl.InsertItem(i,m_FileName,i);
m_ListCtrl.SetItemText(i,1,type);
m_ListCtrl.SetItemText(i,2,m_Path);
}

//记得删除已经没用的临时文件
if(m_list1rowCount!=0)
delete[] bitmap;

2。如果是ICON类型的CListCtrl,则要做一点点改动:
把绑定图标集的代码由
SetImageList(&m_ImageList,LVSIL_SMALL);
改为
SetImageList(&m_ImageList,LVSIL_NORMAL);

插入行时只用
InsertItem(i,mainSet.m_FileName,i);
不用
SetItemText(i,1,type);
之类的代码。

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 );

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