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I’ve written a class derived from CListCtrl for my data’s display and embed to a CExtControlBar object.
Unfortunately,the header display right,but can’t display item rightly(all blanks).Later I embed a pure CListCtrl object to the CExtControlBar,everything is ok.Why?
Please help me!

There is not enough information in your message, so we cannot say what’s wrong with your app. Please give us more details or send us a test application that demonstrates the problem.

Well ,
---MainFrm.h---
...
CDetailListCtrl m_wndCtrlListDetail;
CExtControlBar m_wndDetailBar;
.....
----MainFrm.cpp---
if(!m_wndDetailBar.Create(_T("Detail"),this,ID_VIEW_DETAIL_BAR)) return -1;
if( !m_wndCtrlListDetail.Create(WS_CHILD|WS_VISIBLE|WS_BORDER|LVS_REPORT,CRect(0,0,0,0),&m_wndDetailBar,IDW_DETAIL_BAR)) return -1;
...
m_wndDetailBar.EnableDocking(CBRS_ALIGN_ANY);
...
Here is my CDetailListCtrl implement
#pragma once


// CDetailListCtrl
class CTestTask;
class CDetailListCtrl : public CListCtrl
{
    DECLARE_DYNAMIC(CDetailListCtrl)

public:
    CDetailListCtrl();
    virtual ~CDetailListCtrl();

protected:
    DECLARE_MESSAGE_MAP()
public:
    void ShowDetail(CTestTask* );
    virtual BOOL Create(DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID);
    void        InsertColumn(int nColumn, LPCTSTR pszCaption, int nFormat, int nWidth);
protected:
    BOOL LoadColumnState(void);
    void SaveColumnState(void);
protected:
    CImageList m_img;//Must provide an imagelist
public:
    afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
    afx_msg void OnContextMenu(CWnd* /*pWnd*/, CPoint /*point*/);
    afx_msg void OnSize(UINT nType, int cx, int cy);
    afx_msg void OnDestroy();
};

// DetailListCtrl.cpp : 实现文件
//

#include "stdafx.h"
#include "StbFunTest.h"
#include "DetailListCtrl.h"

// CDetailListCtrl
#define DETAIL_COLUMN_VALID        0
#define DETAIL_COLUMN_NAME        1
#define DETAIL_COLUMN_VALUE        2
#define DETAIL_COLUMN_NEXTWAIT     3

IMPLEMENT_DYNAMIC(CDetailListCtrl, CListCtrl)
CDetailListCtrl::CDetailListCtrl()
{
}

CDetailListCtrl::~CDetailListCtrl()
{
}


BEGIN_MESSAGE_MAP(CDetailListCtrl, CListCtrl)
    ON_WM_CREATE()
    ON_WM_CONTEXTMENU()
    ON_WM_SIZE()
    ON_WM_DESTROY()
    ON_WM_LBUTTONDBLCLK()
END_MESSAGE_MAP()



// CDetailListCtrl 消息处理程序


void CDetailListCtrl::ShowDetail(CTestTask* pTask)
{
    CWaitCursor wait;
    DeleteAllItems();
    if(pTask==NULL)
        return;
    CString csText;
    POSITION pos = pTask->m_lstTstDataSeq.GetHeadPosition();
    CTestData* pData=NULL;
    int nItem=0;
    while(pos)
    {
        pData = (CTestData*)pTask->m_lstTstDataSeq.GetNext(pos);
        ASSERT(pData!=NULL);
        InsertItem(nItem,_T(""),0);
        SetCheck(nItem,pData->m_bValid);
        SetItemText(nItem,DETAIL_COLUMN_NAME,pData->m_cstrKeyName);
        
        csText.Format(_T("%s"),pData->m_uintNextWait);
        SetItemText(nItem,DETAIL_COLUMN_NEXTWAIT,csText );
        
        SetItemData(nItem,(DWORD_PTR)pData);
        nItem++;
    }    
    Invalidate();
}

BOOL CDetailListCtrl::Create(DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID)
{
    return CListCtrl::Create(dwStyle|WS_HSCROLL|WS_VSCROLL, rect, pParentWnd, nID);
}

BOOL CDetailListCtrl::LoadColumnState(void)
{
    CString strOrdering, strWidths, strItem;
    
    strOrdering = theApp.GetProfileString( _T("ListStates"), _T("CDetailCtrl.Ordering"), _T("") );
    strWidths = theApp.GetProfileString( _T("ListStates"), _T("CDetailCtrl.Widths"), _T("") );
    
    HDITEM pItem = { HDI_WIDTH|HDI_ORDER };
    
    if ( _tcsncmp( strWidths, _T("0000"), 4 ) == 0 &&
         _tcsncmp( strOrdering, _T("00"), 2 ) == 0 )
    {
        strWidths = strWidths.Mid( 4 );
        strOrdering = strOrdering.Mid( 2 );
    }
    
    for ( int nColumns = 0 ; GetHeaderCtrl()->GetItem( nColumns, &pItem ) ; nColumns++ )
    {
        if ( strWidths.GetLength() < 4 || strOrdering.GetLength() < 2 ) return FALSE;
        
        _stscanf( strWidths.Left( 4 ), _T("%x"), &pItem.cxy );
        _stscanf( strOrdering.Left( 2 ), _T("%x"), &pItem.iOrder );
        
        strWidths = strWidths.Mid( 4 );
        strOrdering = strOrdering.Mid( 2 );
        
        GetHeaderCtrl()->SetItem( nColumns, &pItem );
    }
    
    return TRUE;
}

void CDetailListCtrl::SaveColumnState(void)
{
    HDITEM pItem = { HDI_WIDTH|HDI_ORDER };
    
    CString strOrdering, strWidths, strItem;
    
    for ( int nColumns = 0 ; GetHeaderCtrl()->GetItem( nColumns, &pItem ) ; nColumns++ )
    {
        GetHeaderCtrl()->GetItem( nColumns, &pItem );
        
        strItem.Format( _T("%.2x"), pItem.iOrder );
        strOrdering += strItem;
        
        strItem.Format( _T("%.4x"), pItem.cxy );
        strWidths += strItem;
    }
    
    theApp.WriteProfileString( _T("ListStates"), _T("CDetailCtrl.Ordering"), strOrdering );
    theApp.WriteProfileString( _T("ListStates"), _T("CDetailCtrl.Widths"), strWidths );
}

int CDetailListCtrl::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CListCtrl::OnCreate(lpCreateStruct) == -1)
        return -1;

    SetExtendedStyle(GetExtendedStyle()|LVS_EX_CHECKBOXES|
        LVS_EX_FULLROWSELECT|LVS_EX_HEADERDRAGDROP|LVS_EX_GRIDLINES);
    //associate imagelist with listviewctrl,
    //this imagelist is only for the first column re: the tree column    
    if(!m_img.Create(IDB_DETAIL,16,1,RGB(0, 255, 255)))
        return -1;
    SetImageList(&m_img, LVSIL_SMALL);

        // TODO: 在此添加专用代码和/或调用基类
    InsertColumn(DETAIL_COLUMN_VALID,_T("valid?"),LVCFMT_CENTER,40);
    InsertColumn( DETAIL_COLUMN_NAME, _T("key"), LVCFMT_LEFT, 80 );
    InsertColumn( DETAIL_COLUMN_NEXTWAIT, _T("wait"), LVCFMT_CENTER, 80 );
    

    return 0;
}
void CDetailListCtrl::InsertColumn(int nColumn, LPCTSTR pszCaption, int nFormat, int nWidth)
{
    HDITEM pColumn;
    
    ZeroMemory( &pColumn, sizeof(pColumn) );
    
    pColumn.mask    = HDI_FORMAT | HDI_LPARAM | HDI_TEXT | HDI_WIDTH;
    pColumn.cxy        = nWidth;
    pColumn.pszText    = (LPTSTR)pszCaption;
    pColumn.fmt        = nFormat;
    pColumn.lParam    = nColumn;
    
    GetHeaderCtrl()->InsertItem( GetHeaderCtrl()->GetItemCount(), &pColumn );
}

void CDetailListCtrl::OnContextMenu(CWnd* /*pWnd*/, CPoint /*point*/)
{
    gDefaultMsg(_T("DetailListCtrl ContextMenu"));
}

void CDetailListCtrl::OnSize(UINT nType, int cx, int cy)
{
    CListCtrl::OnSize(nType, cx, cy);
    Invalidate();
}

void CDetailListCtrl::OnDestroy()
{
    SaveColumnState();
    CListCtrl::OnDestroy();
}

Please help!!!

Dear Raymond,

I guess the problem is somewhere outside the source code you published in the parent message. Could you send me the project with this source code and I will help you.

Best regards, Sergiy.