CListCtrl使用技巧

CListCtrl使用技巧

分类： 2.1 VC++/MFC2009-11-08 16:26 177人阅读 评论(0) 收藏 举报

CListCtrl使用技巧:

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以下未经说明，listctrl默认view 风格为report

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1. CListCtrl 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

   
      注：listview的style请查阅msdn
        
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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
{
     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
{
     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);

      关于得到设置item的状态，还可以参考msdn文章
      Q173242: Use Masks to Set/Get Item States in CListCtrl
                
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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. 得到另一个进程里的listctrl控件的item内容 

 

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18. 选中listview中的item 
Q131284: How To Select a Listview Item Programmatically

 

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19. 如何在CListView中使用CListCtrl的派生类 

 

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20. listctrl的subitem添加图标 

m_list.SetExtendedStyle(LVS_EX_SUBITEMIMAGES);
m_list.SetItem(..); //具体参数请参考msdn

  

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21. 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，share

BOOL CTest6Dlg::OnInitDialog()
{
     CDialog::OnInitDialog();

     HIMAGELIST himlSmall;
     HIMAGELIST himlLarge;
     SHFILEINFO sfi;
     char  cSysDir[MAX_PATH];
     CString  strBuf;

     memset(cSysDir, 0, MAX_PATH);

     GetWindowsDirectory(cSysDir, MAX_PATH);
     strBuf = cSysDir;
     sprintf(cSysDir, "%s", strBuf.Left(strBuf.Find("")+1));

     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(m_list.m_hWnd, LVM_SETIMAGELIST,
                       (WPARAM)LVSIL_SMALL, (LPARAM)himlSmall);
          ::SendMessage(m_list.m_hWnd, LVM_SETIMAGELIST,
                       (WPARAM)LVSIL_NORMAL, (LPARAM)himlLarge);
     }
     return TRUE;  // return TRUE  unless you set the focus to a control
}

void CTest6Dlg::AddFiles(LPCTSTR lpszFileName, BOOL bAddToDocument)
{
     int nIcon = GetIconIndex(lpszFileName, FALSE, FALSE);
     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 = m_list.GetItemCount();
     m_list.InsertItem(nItem, strFileName, nIcon);
     m_list.SetItemText(nItem, 1, strSize);
     m_list.SetItemText(nItem, 2, strFileName.Right(3));
     m_list.SetItemText(nItem, 3, strPath);
}

int CTest6Dlg::GetIconIndex(LPCTSTR lpszPath, BOOL bIsDir, BOOL bSelected)
{
     SHFILEINFO sfi;
     memset(&sfi, 0, sizeof(sfi));

     if (bIsDir)
     {
      SHGetFileInfo(lpszPath,
                   FILE_ATTRIBUTE_DIRECTORY,
                   &sfi,
                   sizeof(sfi),
                   SHGFI_SMALLICON | SHGFI_SYSICONINDEX |
                   SHGFI_USEFILEATTRIBUTES |(bSelected ? SHGFI_OPENICON : 0));
      return  sfi.iIcon;
     }
     else
     {
      SHGetFileInfo (lpszPath,
                   FILE_ATTRIBUTE_NORMAL,
                   &sfi,
                   sizeof(sfi),
                   SHGFI_SMALLICON | SHGFI_SYSICONINDEX |
                   SHGFI_USEFILEATTRIBUTES | (bSelected ? SHGFI_OPENICON : 0));
      return   sfi.iIcon;
     }
     return  -1;
}

  
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22. 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();

   
或者参考

 
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23. listctrl排序 
Q250614：How To Sort Items in a CListCtrl in Report View
 
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24. 在listctrl中选中某个item时动态改变其icon或bitmap 
Q141834: How to change the icon or the bitmap of a CListCtrl item in Visual C++
  

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25. 在添加item后，再InsertColumn()后导致整列数据移动的问题 
Q151897: CListCtrl::InsertColumn() Causes Column Data to Shift 
 
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26. 关于listctrl第一列始终居左的问题 
解决办法：把第一列当一个虚列，从第二列开始插入列及数据，最后删除第一列。      
具体解释参阅    
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27. 锁定column header的拖动 
 
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28. 如何隐藏clistctrl的列 
    把需隐藏的列的宽度设为0,然后检测当该列为隐藏列时，用上面第27点的锁定column 的拖动来实现
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29. listctrl进行大数据量操作时，使用virtual list    
 
 
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30. 关于item只能显示259个字符的问题 
解决办法：需要在item上放一个edit。
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31. 响应在listctrl的column header上的鼠标右键单击 
Q125694: How To Find Out Which Listview Column Was Right-Clicked
 
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32. 类似于windows资源管理器的listview 
Q234310: How to implement a ListView control that is similar to Windows Explorer by using DirLV.exe
 
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33. 在ListCtrl中OnTimer只响应两次的问题 
Q200054：
PRB: OnTimer() Is Not Called Repeatedly for a List Control
 
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34. 以下为一些为实现各种自定义功能的listctrl派生类 
(1)    拖放        

在CListCtrl和CTreeCtrl间拖放

(2)    多功能listctrl
支持subitem可编辑，图标，radiobutton，checkbox，字符串改变颜色的类

支持排序，subitem可编辑，subitem图标，subitem改变颜色的类

(3)    subitem中显示超链接

(4)    subitem的tooltip提示

(5)    subitem中显示进度条    
 
 

(6)    动态改变subitem的颜色和背景色
 

(7)    类vb属性对话框
 
 

(8)    选中subitem(只高亮选中的item)
 

(9)    改变行高

(10)   改变行颜色

(11)   可编辑subitem的listctrl
 

(12)   subitem可编辑，插入combobox，改变行颜色，subitem的tooltip提示

(13)   header 中允许多行字符串

(14)   插入combobox

(15)   添加背景图片
http://www.codeguru.com/Cpp/controls/listview/backgroundcolorandimage/article.php/c4173/ 
http://www.codeguru.com/Cpp/controls/listview/backgroundcolorandimage/article.php/c983/ 
 =

(16)  自适应宽度的listctrl

(17)  改变ListCtrl高亮时的颜色(默认为蓝色)
处理 NM_CUSTOMDRAW 
http://www.codeproject.com/listctrl/lvcustomdraw.asp