[网络转载]VC下内存泄露检测与CListCtrl使用技巧(全)

作者:Wupei  |  发表时间:  |  所属分类:VC

VC下内存泄漏检测:

c++中检测内存泄漏可以引入系统定义的宏来查看,内存在哪个位置泄漏

文件开始处加入下列定义
#define _CRTDBG_MAP_ALLOC
#include <stdlib.h>
#include <crtdbg.h>

程序退出时加入以下函数:

_CrtDumpMemoryLeaks();

如果有泄漏会显示
e:myprojectmltithrd.14mltithrd.cpp(95) : {68} client block at 0x00372550, subtype c0, 144 bytes long.
a CMultiDocTemplate object at $00372550, 144 bytes long

CListCtrl使用技巧:

—————————————————————————————–
以下未经说明,listctrl默认view 风格为report

——————————————————————————–

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”

 

——————————————————————————–

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
      http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wceshellui5/html/wce50lrflistviewstyles.asp

 

——————————————————————————–

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);
           }
      }

 

——————————————————————————–

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);

      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
               http://support.microsoft.com/kb/173242/en-us

 

——————————————————————————–

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. 得到另一个进程里的listctrl控件的item内容
http://www.codeproject.com/threads/int64_memsteal.asp

 

——————————————————————————–

18. 选中listview中的item
Q131284: How To Select a Listview Item Programmatically
http://support.microsoft.com/kb/131284/en-us

 

——————————————————————————–

19. 如何在CListView中使用CListCtrl的派生类
http://www.codeguru.com/cpp/controls/listview/introduction/article.php/c919/

 

——————————————————————————–

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

 

——————————————————————————–

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;
      }

 

——————————————————————————–

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

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_mfc_cwnd.3a3a.setredraw.asp

 

——————————————————————————–

23. listctrl排序
Q250614:How To Sort Items in a CListCtrl in Report View
http://support.microsoft.com/kb/250614/en-us

 

——————————————————————————–

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++
http://support.microsoft.com/kb/141834/en-us

 

——————————————————————————–

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
http://support.microsoft.com/kb/151897/en-us

 

——————————————————————————–

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   http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/listview/structures/lvcolumn.asp

 

——————————————————————————–

27. 锁定column header的拖动
http://msdn.microsoft.com/msdnmag/issues/03/06/CQA/

 

——————————————————————————–

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

——————————————————————————–

29. listctrl进行大数据量操作时,使用virtual list   
http://www.codeguru.com/cpp/controls/listview/advanced/article.php/c4151/
http://www.codeproject.com/listctrl/virtuallist.asp

 

——————————————————————————–

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。

 

——————————————————————————–

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
http://support.microsoft.com/kb/125694/en-us

 

——————————————————————————–

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
http://support.microsoft.com/kb/234310/en-us

 

——————————————————————————–

33. 在ListCtrl中OnTimer只响应两次的问题
Q200054:
PRB: OnTimer() Is Not Called Repeatedly for a List Control
http://support.microsoft.com/kb/200054/en-us

——————————————————————————–

34. 以下为一些为实现各种自定义功能的listctrl派生类
(1)    拖放       
http://www.codeproject.com/listctrl/dragtest.asp

在CListCtrl和CTreeCtrl间拖放
http://support.microsoft.com/kb/148738/en-us

(2)    多功能listctrl
支持subitem可编辑,图标,radiobutton,checkbox,字符串改变颜色的类
http://www.codeproject.com/listctrl/quicklist.asp

支持排序,subitem可编辑,subitem图标,subitem改变颜色的类
http://www.codeproject.com/listctrl/ReportControl.asp

(3)    subitem中显示超链接
http://www.codeproject.com/listctrl/CListCtrlLink.asp

(4)    subitem的tooltip提示
http://www.codeproject.com/listctrl/ctooltiplistctrl.asp

(5)    subitem中显示进度条   
http://www.codeproject.com/listctrl/ProgressListControl.asp
http://www.codeproject.com/listctrl/napster.asp
http://www.codeguru.com/Cpp/controls/listview/article.php/c4187/

(6)    动态改变subitem的颜色和背景色
http://www.codeproject.com/listctrl/highlightlistctrl.asp
http://www.codeguru.com/Cpp/controls/listbox/colorlistboxes/article.php/c4757/

(7)    类vb属性对话框
http://www.codeproject.com/listctrl/propertylistctrl.asp
http://www.codeguru.com/Cpp/controls/listview/propertylists/article.php/c995/
http://www.codeguru.com/Cpp/controls/listview/propertylists/article.php/c1041/

(8)    选中subitem(只高亮选中的item)
http://www.codeproject.com/listctrl/SubItemSel.asp
http://www.codeproject.com/listctrl/ListSubItSel.asp

(9)    改变行高
http://www.codeproject.com/listctrl/changerowheight.asp

(10)   改变行颜色
http://www.codeproject.com/listctrl/coloredlistctrl.asp

(11)   可编辑subitem的listctrl
http://www.codeproject.com/listctrl/nirs2000.asp
http://www.codeproject.com/listctrl/editing_subitems_in_listcontrol.asp

(12)   subitem可编辑,插入combobox,改变行颜色,subitem的tooltip提示
http://www.codeproject.com/listctrl/reusablelistcontrol.asp

(13)   header 中允许多行字符串
http://www.codeproject.com/listctrl/headerctrlex.asp

(14)   插入combobox
http://www.codeguru.com/Cpp/controls/listview/editingitemsandsubitem/article.php/c979/

(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/
http://www.vchelp.net/vchelp/archive.asp?type_id=9&class_id=1&cata_id=1&article_id=1088&search_term=

(16)  自适应宽度的listctrl
http://www.codeproject.com/useritems/AutosizeListCtrl.asp

(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

Trackback from your site.

请在这里留言: