MFC如何使用 List Control

MFC如何使用 List Control

以下未经说明，listctrl默认view 风格为report
相关类及处理函数

MFC：CListCtrl类

SDK：以 “ListView_”开头的一些宏。如 ListView_InsertColumn

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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

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

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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;
nbsp; 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http://www.codeproject.com/threads/int64_memsteal.asp

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18. 选中listview中的itemQ131284: How To Select a Listview Item Programmatically
http://support.microsoft.com/kb/131284/en-us

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

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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];
String 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

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

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

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24. 在listctrl中选中某个item时动态改变其icon或bitmapQ141834: How to change the icon or the bitmap of a CListCtrl item in Visual C++
http://support.microsoft.com/kb/141834/en-us

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

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

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

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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
http://www.microsoft.com/msj/archive/S2061.aspx
http://www.codeguru.com/cpp/controls/listview/advanced/article.php/c4151/
http://www.codeproject.com/listctrl/virtuallist.asp

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

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32. 类似于windows资源管理器的listviewQ234310: How to implement a ListView control that is similar to Windows Explorer by using DirLV.exe
http://support.microsoft.com/kb/234310/en-us

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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
http://support.microsoft.com/kb/200054/en-us