ListControl操作

r囧r小猫 2023-10-18 08:17 127阅读 0赞

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);  
\}  
\}  
  
CString strIns;  
strIns="delete from tmpStatByGround";  
m\_pRs.CreateInstance(\_\_uuidof(Recordset));  
m\_pRs->CursorLocation = adUseClient;  
m\_pRs->Open((LPCTSTR)strIns, vDispatch, adOpenKeyset,  
adLockOptimistic, adCmdUnknown);  
  
\--------------------------------------------------------------------------------  
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);  
\--------------------------------------------------------------------------------  
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);  
\--------------------------------------------------------------------------------  
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. 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 );  
\}