本文全面介绍了如何编辑List Control里面的任何子项 介绍 内容有点多，译出来也没多大意思，大致就是说一个VC程序员会常常碰到List Control，List Control有很多方法可以显示数据，可List Control里默认的没有编辑功能，故在此智短文里，那个牛叉的人教你怎

本文全面介绍了如何编辑List Control里面的任何子项

介绍

内容有点多，译出来也没多大意思，大致就是说一个VC程序员会常常碰到List Control，List Control有很多方法可以显示数据，可List Control里默认的没有编辑功能，故在此智短文里，那个牛叉的人教你怎么实现这个功能。这篇文章是基于VC MFC滴，用别的功具的娃们当然也可以看看，呵呵，不多说，先实现图上ok exit两个按钮：

void CMultipleColumnsDlg::OK()

{

CDialog::EndDialog (0); // Add this line

}

void CMultipleColumnsDlg::OnExit()

{

CDialog::EndDialog (0); // Add this line

}

接下来添加一个ListCtrl控件，记得把ListCtrl的style设置成Report，这个是为了实现我们要多行显示的功能

然后增加一个文本框Edit Box去掉它的Border style属性

增加一个InsertItems() 成员函数，用来写入ListControl的显示内容

void CMultipleColumnsDlg::InsertItems()

{

HWND hWnd = ::GetDlgItem(m_hWnd, IDC_LIST1);

// Set the LVCOLUMN structure with the required

// column information

LVCOLUMN list;

list.mask = LVCF_TEXT |LVCF_WIDTH|

LVCF_FMT |LVCF_SUBITEM;

list.fmt = LVCFMT_LEFT;

list.cx = 50;

list.pszText = "S.No";

list.iSubItem = 0;

//Inserts the column

::SendMessage(hWnd,LVM_INSERTCOLUMN,

(WPARAM)0,(WPARAM)&list);

list.cx = 100;

list.pszText = "Name";

list.iSubItem = 1;

::SendMessage(hWnd ,LVM_INSERTCOLUMN,

(WPARAM)1,(WPARAM)&list);

list.cx = 100;

list.pszText = "Address";

list.iSubItem = 2;

::SendMessage(hWnd ,LVM_INSERTCOLUMN,

(WPARAM)1,(WPARAM)&list);

list.cx = 100;

list.pszText = "Country";

list.iSubItem = 2;

::SendMessage(hWnd ,LVM_INSERTCOLUMN,

(WPARAM)1,(WPARAM)&list);

// Inserts first Row with four columns 插入行

SetCell(hWnd,"1",0,0);

SetCell(hWnd,"Prabhakar",0,1);

SetCell(hWnd,"Hyderabad",0,2);

SetCell(hWnd,"India",0,3);

// Inserts second Row with four columns .

SetCell(hWnd,"2",1,0);

SetCell(hWnd,"Uday",1,1);

SetCell(hWnd,"Chennai",1,2);

SetCell(hWnd,"India",1,3);

}

自定义的SetCell( ) 函数，用来实现插入数据用的

void CMultipleColumnsDlg::SetCell(HWND hWnd1,

CString value, int nRow, int nCol)

{

TCHAR szString [256];

wsprintf(szString,value ,0);

//Fill the LVITEM structure with the

//values given as parameters.

LVITEM lvItem;

lvItem.mask = LVIF_TEXT;

lvItem.iItem = nRow;

lvItem.pszText = szString;

lvItem.iSubItem = nCol;

if(nCol >0)

//set the value of listItem

::SendMessage(hWnd1,LVM_SETITEM,

(WPARAM)0,(WPARAM)&lvItem);

else

//Insert the value into List

ListView_InsertItem(hWnd1,&lvItem);

}

//通过行和列得到项目里面的数据

CString CMultipleColumnsDlg::GetItemText(

HWND hWnd, int nItem, int nSubItem) const

{

LVITEM lvi;

memset(&lvi, 0, sizeof(LVITEM));

lvi.iSubItem = nSubItem;

CString str;

int nLen = 128;

int nRes;

do

{

nLen *= 2;

lvi.cchTextMax = nLen;

lvi.pszText = str.GetBufferSetLength(nLen);

nRes = (int)::SendMessage(hWnd,

LVM_GETITEMTEXT, (WPARAM)nItem,

(LPARAM)&lvi);

str.ReleaseBuffer();

return str;

}

}

//为窗口类添加两个成员变量：

int nItem, nSubItem;

用Class wizard 添加 NM_CLICK 响应，当用户点击任何位置时，就会对应出现一个Edit Box，并可以修改数据

void CMultipleColumnsDlg::OnClickList(

NMHDR* pNMHDR, LRESULT* pResult)

{

Invalidate();

HWND hWnd1 = ::GetDlgItem (m_hWnd,IDC_LIST1);

LPNMITEMACTIVATE temp = (LPNMITEMACTIVATE) pNMHDR;

RECT rect;

//get the row number

nItem = temp->iItem;

//get the column number

nSubItem = temp->iSubItem;

if(nSubItem == 0 || nSubItem == -1 || nItem == -1)

return ;

//Retrieve the text of the selected subItem

//from the list

CString str = GetItemText(hWnd1,nItem ,

nSubItem);

RECT rect1,rect2;

// this macro is used to retrieve the Rectanle

// of the selected SubItem

ListView_GetSubItemRect(hWnd1,temp->iItem,

temp->iSubItem,LVIR_BOUNDS,&rect);

//Get the Rectange of the listControl

::GetWindowRect(temp->hdr.hwndFrom,&rect1);

//Get the Rectange of the Dialog

::GetWindowRect(m_hWnd,&rect2);

int x=rect1.left-rect2.left;

int y=rect1.top-rect2.top;

if(nItem != -1)

::SetWindowPos(::GetDlgItem(m_hWnd,IDC_EDIT1),

HWND_TOP,rect.left+x,rect.top+4,

rect.right-rect.left - 3,

rect.bottom-rect.top -1,NULL);

::ShowWindow(::GetDlgItem(m_hWnd,IDC_EDIT1),SW_SHOW);

::SetFocus(::GetDlgItem(m_hWnd,IDC_EDIT1));

//Draw a Rectangle around the SubItem

::Rectangle(::GetDC(temp->hdr.hwndFrom),

rect.left,rect.top-1,rect.right,rect.bottom);

//Set the listItem text in the EditBox

::SetWindowText(::GetDlgItem(m_hWnd,IDC_EDIT1),str);

*pResult = 0;

}

To handle the ENTER key we need to write the virtual function OnOk （响应ENTER键）

afx_msg void OnOK();

In MultipleColumnsDlg.cpp write the following code.

// This function handles the ENTER key

void CMultipleColumnsDlg::OnOK()

{

CWnd* pwndCtrl = GetFocus();

// get the control ID which is

// presently having the focus

int ctrl_ID = pwndCtrl->GetDlgCtrlID();

CString str;

switch (ctrl_ID)

{ //if the control is the EditBox

case IDC_EDIT1:

//get the text from the EditBox

GetDlgItemText(IDC_EDIT1,str);

//set the value in the listContorl with the

//specified Item & SubItem values

SetCell(::GetDlgItem (m_hWnd,IDC_LIST1),

str,nItem,nSubItem);

::SendDlgItemMessage(m_hWnd,IDC_EDIT1,

WM_KILLFOCUS,0,0);

::ShowWindow(::GetDlgItem(m_hWnd,IDC_EDIT1),

SW_HIDE);

break;

default:

break;

}

}

最后一步在OnInitDialog 中设置List Control的样式

ListView_SetExtendedListViewStyle(::GetDlgItem

(m_hWnd,IDC_LIST1),LVS_EX_FULLROWSELECT |

LVS_EX_GRIDLINES);

InsertItems();

::ShowWindow(::GetDlgItem(m_hWnd,IDC_EDIT1),SW_HIDE);