CListCtrl 常用的一些代码

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// 初始化
CListCtrl* pList = (CListCtrl*)GetDlgItem(IDC_LIST_XXX);
pList->ModifyStyle(0, LVS_REPORT| LVS_SHOWSELALWAYS | LVS_SINGLESEL); //
pList->SetExtendedStyle(LVS_EX_FULLROWSELECT | LVS_EX_GRIDLINES | LVS_EX_HEADERDRAGDROP);
pList->InsertColumn(0, _T("  "), LVCFMT_LEFT, 30);
pList->InsertColumn(1, _T("XXXX"), LVCFMT_LEFT, 100);
pList->InsertColumn(2, _T("XXXXX"), LVCFMT_LEFT, 100);

// 选中某一行

pList->SetItemState(n, LVIS_SELECTED, LVIS_SELECTED);

// 获得选中行

        CListCtrl* pList = (CListCtrl*)GetDlgItem(IDC_LIST_XXX);
        POSITION pos = pList->GetFirstSelectedItemPosition();
        if(pos == NULL)
        {
                return;
        }
        int nItem = pList->GetNextSelectedItem(pos);
        pList->DeleteItem(nItem);

选择项的问题

双击响应函数里的参数有一个是NM_LISTVIEW *

msdn查NMLISTVIEW（把中间那个_去掉）能看到这个结构中有一个成员变量是iItem

0表示第一行，表示第二行；还有一个iSubItem表示列，表示双击在第一列

CListCtrl大小图标转换

 

先要添加控制按纽（大图标，小图标，列表，详细）                                

void OnBig()                                                              

{

LONG lStyle;  

   lStyle = GetWindowLong(m_ListCtrl.m_hWnd,GWL_STYLE);//获取当前窗口句并 

   lStyle&=~ LVS_TYPEMASK;//清除显示方式所在的比特为 

       lStyle |= LVS_ICON;//设置显示方式 

       SetWindowLong(m_listCtrl.m_hWnd, GWL_STYLE,lStyle);//设置窗口类型                                  

}         

 

在另外的三个消息处理函数中只需把这里的LVS_ICON改为LVS_SMALLICON,               

 

LVS_LIST（列表）,LVS_REPORT(详细）即可。   

 

以下代码演示如何获得所选项行数

// This code prints out the indices of selected items to debug win   

 int i = GetNextItem( -1, LVNI_ALL | LVNI_SELECTED);   

 while( i != -1 )   

 {   

       TRACE("%d/n", i );   

       i = GetNextItem( i, LVNI_ALL | LVNI_SELECTED);   

 }   

 

 

以下代码演示如何获得所选项列数

 

// HitTestEx   - Determine the row index and column index for a point   

// Returns     - the row index or -1 if point is not over a row   

// point       - point to be tested.   

// col         - to hold the column index   

int CMyListCtrl::HitTestEx(CPoint &point,int *col) const   

{   

       int colnum = 0;   

       int row = HitTest( point, NULL );   

    

       if( col ) *col = 0;   

    

       // Make sure that the ListView is in LVS_REPORT   

       if( (GetWindowLong(m_hWnd, GWL_STYLE) & LVS_TYPEMASK) != LVS_REPORT )   

               return row;   

    

       // Get the top and bottom row visible   

       row = GetTopIndex();   

       int bottom = row + GetCountPerPage();   

       if( bottom > GetItemCount() )   

               bottom = GetItemCount();   

    

       // Get the number of columns   

       CHeaderCtrl* pHeader = (CHeaderCtrl*)GetDlgItem(0);   

       int nColumnCount = pHeader->GetItemCount();   

    

       // Loop through the visible rows   

       for( ;row <=bottom;row++)   

       {   

               // Get bounding rect of item and check whether point falls in it   

               CRect rect;   

               GetItemRect( row, &rect, LVIR_BOUNDS );   

               if( rect.PtInRect(point) )   

               {   

                       // Now find the column   

                       for( colnum = 0; colnum < nColumnCount; colnum++ )   

                       {   

                               int colwidth = GetColumnWidth(colnum);   

                               if( point.x >= rect.left   

                                       && point.x <= (rect.left + colwidth ) )   

                               {   

                                       if( col ) *col = colnum;   

                                       return row;   

                               }   

                               rect.left += colwidth;   

                       }   

               }   

       }   

       return -1;   

}  

 

用GetItemText获取相应项的内容。

 

返回选中的行

 

// This code prints out the indices of selected items to debug win  

 int i = GetNextItem( -1, LVNI_ALL | LVNI_SELECTED);  

 while( i != -1 )  

 {  

 TRACE("%d/n", i );  

 i = GetNextItem( i, LVNI_ALL | LVNI_SELECTED);  

 } 

 

void CHisView::OnInitialUpdate()   

{   

       CListView::OnInitialUpdate();   

       SetWindowText("检测历史");   

       CListCtrl& ctrl=GetListCtrl();   

       DWORD dwStyle=GetWindowLong(ctrl.GetSafeHwnd(),GWL_STYLE);   

       if((dwStyle&LVS_TYPEMASK)!=LVS_REPORT)   

               SetWindowLong(ctrl.GetSafeHwnd(),GWL_STYLE,(dwStyle&~LVS_TYPEMAS   

K)|LVS_REPORT);   

    

       ctrl.InsertColumn(0,"序  号",LVCFMT_LEFT,100,0);   

       ctrl.InsertColumn(1,"",LVCFMT_LEFT,100,1);   

       ctrl.InsertColumn(2",LVCFMT_RIGHT,100,2);  

       ctrl.InsertColumn(3,"",LVCFMT_RIGHT,100,3);  

       ctrl.InsertColumn(4,"",LVCFMT_RIGHT,100,4);  

       ctrl.InsertColumn(5,"",LVCFMT_RIGHT,100,5);  

       ctrl.InsertColumn(6,"检测次数",LVCFMT_RIGHT,100,6);  

       //打开数据库，并加入数据 

       CDiagApp* app=(CDiagApp*)AfxGetApp();  

       /*     CResView disp;  

       if(disp.bFilter>0)  

       {  

   

               m_pSet->m_strFilter=app->xh;  

       }  

*/  

       CDatabase* pdb;  

       pdb=new CDatabase;  

       pdb->Open(_T("diag"),FALSE,FALSE);  

       CDiagSet* m_pSet=new CDiagSet(pdb);  

       if(m_pSet->IsOpen())  

               m_pSet->Close();  

       bop=m_pSet->Open();  

       if(bop)  

               TRACE("OPENED OK/n");  

               else  

               TRACE("not open/n");  

       m_pSet->MoveFirst();  

       int index=0;  

       int iIndex=0;  

       while(!m_pSet->IsEOF())  

//     int nCount=m_pSet->GetRecordCount();  

//     for (int i=0;i<nCount;i++)  

       {  

               LV_ITEM item;  

               memset(&item,0,sizeof(item));  

               CListCtrl& ctrl=GetListCtrl();  

               CString str;  

               dl=m_pSet->m_DIANLIU;  

               dy=m_pSet->m_DIANYA;  

               gl=m_pSet->m_GONGLV;  

               zc=m_pSet->m_ZHUANGCHA;  

               name=m_pSet->m_NAME;  

               iIndex++;  

               str.Format("%d",iIndex);  

               index=ctrl.InsertItem(iIndex,str);  

               str.Format(name);  

               ctrl.SetItemText(index,1,str);  

               str.Format("%d",dy);  

               ctrl.SetItemText(index,2,str);  

               str.Format("%d",dl);  

               ctrl.SetItemText(index,3,str);  

 

               str.Format("%d",gl);  

               ctrl.SetItemText(index,4,str);  

               str.Format("%d",zc);   

               ctrl.SetItemText(index,5,str);   

               m_pSet->MoveNext();   

       }   

}  

 

如何确定item是否被check

 

How to get notification when an item is checked / unchecked:  

void DemoDlg::OnItemchangedLinksList(NMHDR* pNMHDR, LRESULT* pResult)   

{  

   NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;  

   *pResult = 0;  

 

   if (pNMListView->uOldState == 0 && pNMListView->uNewState == 0)  

       return;// No change  

 

   BOOL bPrevState = (BOOL)(((pNMListView->uOldState &   

               LVIS_STATEIMAGEMASK)>>12)-1);  // Old check box state  

   if (bPrevState < 0)// On startup there's no previous state   

       bPrevState = 0;// so assign as false (unchecked)  

 

   // New check box state  

   BOOL bChecked=(BOOL)(((pNMListView->uNewState & LVIS_STATEIMAGEMASK)>>12)-1);     

   if (bChecked < 0)// On non-checkbox notifications assume false  

       bChecked = 0;   

 

   if (bPrevState == bChecked)// No change in check box  

       return;  

      

   // Now bChecked holds the new check box state  

 

   // ....  

}  

 

forthis to work, you must map the following message:   

 

ON_NOTIFY(LVN_ITEMCHANGED, IDC_MYLIST, OnItemchangedLinksList)  

Setting the check box state of an item:  

Try the following piece of code   

 

void SetLVCheck (WPARAM ItemIndex, BOOL bCheck)  

{  

   ListView_SetItemState (m_lvTestList.m_hWnd, ItemIndex,   

       UINT((int(bCheck) + 1) << 12), LVIS_STATEIMAGEMASK);  

}  

 

 

 

阻止column大小被改变－一

 

The header control in the ListView control sends notification to the parent window (e.i. the ListView) before it begins resizing a column. We can override the OnNotify() function in the CListCtrl derivedclass to handlethis notification. The code below prevents resizing of all columns. Note that the resize cursor still shows up.   

BOOL CMyListCtrl::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)   

{  

     switch (((NMHDR*)lParam)->code)  

    {  

     case HDN_BEGINTRACKW:  

     case HDN_BEGINTRACKA:  

 case (HDN_DIVIDERDBLCLICKA):  

 case (HDN_DIVIDERDBLCLICKW):  

  {  

      *pResult = TRUE;     // disable tracking  

      return TRUE;     // Processed message  

  }  

    }   

    return CListCtrl::OnNotify(wParam, lParam, pResult);  

   

       return CListCtrl::OnNotify(wParam, lParam, pResult);  

}  

If you want to prevent resizing of only one column, you should checkfor the value in iItem field of the HD_NOTIFY structure. The code below stops only the first column from being resized.   

    

BOOL CMyListCtrl::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult)   

{  

       HD_NOTIFY  *pHDN = (HD_NOTIFY*)lParam;  

       if((pHDN->hdr.code == HDN_BEGINTRACKW || pHDN->hdr.code == HDN_BEGINTRACKA)  

               && pHDN->iItem == 0)           // Prevent only first (col# 0) from resizing  

       {  

               *pResult = TRUE;               // disable tracking  

               return TRUE;                   // Processed message  

       }  

   

       return CListCtrl::OnNotify(wParam, lParam, pResult);  

}  

 

 

 

阻止column大小被改变--二

 

查看源代码拷贝至剪贴板打印代码

// MyHeader.h : header file  

//  

 

/////////////////////////////////////////////////////////////////////////////  

// CMyHeader window  

#ifndef __MYHEADER_H__  

#define __MYHEADER_H__  

 

class CMyHeader :public CHeaderCtrl  

{  

// Construction  

public:  

   CMyHeader();  

 

// Attributes  

public:  

 

// Operations  

public:  

 

// Overrides  

   // ClassWizard generated virtual function overrides  

   //{{AFX_VIRTUAL(CMyHeader)  

   //}}AFX_VIRTUAL  

 

// Implementation  

public:  

   virtual ~CMyHeader();  

 

   // Generated message map functions  

protected:  

   //{{AFX_MSG(CMyHeader)  

   afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);  

   afx_msgvoid OnLButtonDblClk(UINT nFlags, CPoint point);  

   //}}AFX_MSG  

 

   DECLARE_MESSAGE_MAP()  

};  

#endif  

 

/////////////////////////////////////////////////////////////////////////////  

// MyHeader.cpp : implementation file  

//  

 

#include"stdafx.h"  

#include"MyHeader.h"  

 

#ifdef _DEBUG  

#definenew DEBUG_NEW  

#undef THIS_FILE  

staticchar THIS_FILE[] = __FILE__;  

#endif  

 

/////////////////////////////////////////////////////////////////////////////  

// CMyHeader  

 

CMyHeader::CMyHeader()  

{  

}  

 

CMyHeader::~CMyHeader()  

{  

}  

 

 

BEGIN_MESSAGE_MAP(CMyHeader, CHeaderCtrl)  

   //{{AFX_MSG_MAP(CMyHeader)  

   ON_WM_SETCURSOR()  

   ON_WM_LBUTTONDBLCLK()  

   ON_WM_NCHITTEST()  

   //}}AFX_MSG_MAP  

END_MESSAGE_MAP()  

 

 

////////////////////////////////////////////////////////////////////  

// Disabling this message callback prevents the cursor from   

// changing when the cursor is over the column separator line  

// in the header. We enable this callback only if the cursor lies  

// on a separator for which resizing has been allowed.  

//  

BOOL CMyHeader::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message)   

{  

   if (m_bAllowDrag)  

       return CHeaderCtrl::OnSetCursor(pWnd, nHitTest, message);  

   else 

       return TRUE;  

 

}  

 

 

 

/////////////////////////////////////////////////////////////////  

// Disabling this message callback prevents the feature that headers  

// have of resizing a column when a double click is done on the column  

// separator line. We enable this callback only if the cursor lies  

// on a separator for which resizing has been allowed.  

//  

void CMyHeader::OnLButtonDblClk(UINT nFlags, CPoint point)   

{  

   if (IsDragAllowed( point ))  

       CHeaderCtrl::OnLButtonDblClk(nFlags, point);  

}  

 

 

 

///////////////////////////////////////////////////////////////  

// Everytime there is a cursor movement whithin the header, this  

// function is invoked. It has the feature that it is invoked   

// before OnSetCursor(), which means we can decide in advance  

// whether we want the tracking cursor to appear. (An aside:  

// OnMouseMove() will also track mouse movement, but it is  

// invoked after OnSetCursor())  

//  

UINT CMyHeader::OnNcHitTest(CPoint point)   

{  

   // This 'point' is in screen coordinates. We need to  

   // transform it to client coords before we test which  

   // column it is in.  

   POINT clientPoint = point;  

   ScreenToClient( &clientPoint );  

 

   m_bAllowDrag = IsDragAllowed( clientPoint );  

   return CHeaderCtrl::OnNcHitTest(point);  

}  

 

 

The following function iswhere we select the columnsfor which we want to disable dragging. It is assumed we have 5 columns, and we want to disable draggingfor columns 0, 2, and 3.  

 

/////////////////////////////////////////////////////////////  

// This is the function which determines which column   

// the cursor is in, and we decide whether we want to  

// allow resizing of that column.  

//  

BOOL CMyHeader::IsDragAllowed( CPoint point )  

{  

   // We will extract information about the header   

   // using this structure  

   HD_ITEM hi;  

   hi.mask = HDI_WIDTH;   // We want the column width.  

 

   // We keep a running sum of the horizontal location  

   // of each column's divider.  

   int dividerLocations = 0;  

 

   // The amount of space around the dividor inside of which one   

   // can begin the dragging operation is equal to the width of   

   // the cursor, centered at the dividor. So we need to trap   

   // the cursor a distance of half the cursor width to each   

   // side of the dividor.  

   int dragWidth = GetSystemMetrics( SM_CXCURSOR );  

 

   // Since we have no need to apply this test for columns for which   

   // we want to enable dragging, we do not need to go beyond the last   

   // column for which we want to disable dragging in our 'for loop'.  

   BOOL allowDrag = TRUE;  

   for (int i = 0; i < 4; ++i) {  

       GetItem(i, &hi);  

 

       // hi.cxy contains the width of the i'th column.  

       dividerLocations += hi.cxy;  

  

       // Here is where we place the indexes for the columns   

       // for which we want to disable dragging.  

       if (i == 0 ||  

           i == 2 ||  

           i == 3)  

             if (point.x > dividerLocations - dragWidth/2 &&  

             point.x < dividerLocations + dragWidth/2)  

               allowDrag = FALSE;  

       }  

 

   return allowDrag;  

}