Windows ListCtrl提示

Windows ListCtrl提示
1. ListCtrl 風格
      LVS_ICON: 為每個item顯示大表徵圖
      LVS_SMALLICON: 為每個item顯示小表徵圖
      LVS_LIST: 顯示一列帶有小表徵圖的item
      LVS_REPORT: 顯示item詳細資料

      直觀的理解：windows資源管理員，“查看”標籤下的“大表徵圖，小表徵圖，列表，詳細資料”
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2. 設定listctrl 風格及擴充風格      LONG lStyle;
      lStyle = GetWindowLong(m_list.m_hWnd, GWL_STYLE);//擷取當前視窗style
      lStyle &= ~LVS_TYPEMASK; //清除顯示方式位
      lStyle |= LVS_REPORT; //設定style
      SetWindowLong(m_list.m_hWnd, GWL_STYLE, lStyle);//設定style
 
      DWORD dwStyle = m_list.GetExtendedStyle();
      dwStyle |= LVS_EX_FULLROWSELECT;//選中某行使整行高亮（只適用與report風格的listctrl）
      dwStyle |= LVS_EX_GRIDLINES;//網格線（只適用與report風格的listctrl）
      dwStyle |= LVS_EX_CHECKBOXES;//item前產生checkbox控制項
      m_list.SetExtendedStyle(dwStyle); //設定擴充風格
 
      註：listview的style請查閱msdn
      http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wceshellui5/html/wce50lrflistviewstyles.asp
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3. 插入資料      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”);//設定資料
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4. 一直選中item    選中style中的Show selection always，或者在上面第2點中設定LVS_SHOWSELALWAYS

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5. 選中和取消選中一行    int nIndex = 0;
    //選中
    m_list.SetItemState(nIndex, LVIS_SELECTED|LVIS_FOCUSED, LVIS_SELECTED|LVIS_FOCUSED);
    //取消選中
    m_list.SetItemState(nIndex, 0, LVIS_SELECTED|LVIS_FOCUSED);
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6. 得到listctrl中所有行的checkbox的狀態      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為選中狀態"), i);
                AfxMessageBox(str);
           }
      }
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7. 得到listctrl中所有選中行的序號
      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("選中了第%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的資訊      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);

      關於得到設定item的狀態，還可以參考msdn文章
      Q173242: Use Masks to Set/Get Item States in CListCtrl
               http://support.microsoft.com/kb/173242/en-us
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9. 得到listctrl的所有列的header字串內容      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中一項可見，即滾動捲軸    m_list.EnsureVisible(i, FALSE);
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11. 得到listctrl列數    int nHeadNum = m_list.GetHeaderCtrl()->GetItemCount();
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12. 刪除所有列      方法一：
         while ( m_list.DeleteColumn (0))
       因為你刪除了第一列後，後面的列會依次向上移動。

      方法二：
      int nColumns = 4;
      for (int i=nColumns-1; i>=0; i--)
          m_list.DeleteColumn (i);
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13. 得到單擊的listctrl的行列號      添加listctrl控制項的NM_CLICK訊息相應函數
      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("單擊的是第%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("單擊的是第%d行第%d列",
                                pNMListView->iItem, pNMListView->iSubItem);
                AfxMessageBox(strtemp);
           }
          */
           *pResult = 0;
      }
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14. 判斷是否點擊在listctrl的checkbox上      添加listctrl控制項的NM_CLICK訊息相應函數
      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);
           //判斷是否點在checkbox上
           if(nFlag == LVHT_ONITEMSTATEICON)
           {
                AfxMessageBox("點在listctrl的checkbox上");
           }
           *pResult = 0;
      }
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15. 右鍵點擊listctrl的item快顯功能表      添加listctrl控制項的NM_RCLICK訊息相應函數
      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切換焦點時(包括用鍵盤和滑鼠切換item時)，狀態的一些變化順序      添加listctrl控制項的LVN_ITEMCHANGED訊息相應函數
      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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20. listctrl的subitem添加表徵圖      m_list.SetExtendedStyle(LVS_EX_SUBITEMIMAGES);
      m_userlist.SetItem(..); //具體參數請參考msdn
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21. 在CListCtrl顯示檔案，並根據檔案類型來顯示表徵圖      網上找到的代碼，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("file:///));
 
           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內容進行大資料量更新時，避免閃爍      m_list.SetRedraw(FALSE);
      //更新內容
      m_list.SetRedraw(TRUE);
      m_list.Invalidate();
      m_list.UpdateWindow();