MFC樹形控件加載Access數據庫數據

研究了好幾天,今天終於弄好了,下面是代碼
[dlg.cpp]
在初始函數OnInitDialog()中加
HICON hIcon[3];
HTREEITEM hRoot;
//加載三個圖標
hIcon[0] = theApp.LoadIconW(IDI_ICON1);
hIcon[1] = theApp.LoadIconW(IDI_ICON3);
hIcon[2] = theApp.LoadIconW(IDI_ICON2);

m_imageList.Create(16, 16, ILC_COLOR16, 3, 3);
for (int i=0;i<3;i++)
{
    m_imageList.Add(hIcon[i]);
}
//綁定樹控件與ImaageList
m_webTree.SetImageList(&m_imageList, TVSIL_NORMAL);
//初始化Ado環境
AfxOleInit();
hRoot = NULL;
OpenConn();     //打開數據函數
LoadTreeCtrlData(hRoot,_T("0"));    //遞歸加數據到樹控件中
CloseConn();        //關閉數據庫

//下面就是遞歸函數
void CMFCApp_CTreeCtrl_testDlg::LoadTreeCtrlData(HTREEITEM hItem,CString mid)
{
HTREEITEM temItem;
_RecordsetPtr m_pRecordset;
m_pRecordset.CreateInstance(__uuidof(Recordset));
try
{
CString sql;
sql.Format(_T("select * from mTable where pID='%s'"), mid);

m_pRecordset->Open((_variant_t)sql, m_pConnection.GetInterfacePtr(), adOpenDynamic, adLockOptimistic, adCmdText);
    //AfxMessageBox(_T("123"));
}
catch (_com_error e)
{
    CString str;
    str.Format(_T("鏈接數據表失敗:%s"), e.ErrorMessage());
    AfxMessageBox(str);
    return;
}

_variant_t var;
CString strTmp;
while (!m_pRecordset->adoEOF)
{
    var = m_pRecordset->GetCollect(_T("mName"));
    strTmp = (LPCTSTR)_bstr_t(var);
    temItem=m_webTree.InsertItem(strTmp, 1, 1, hItem, TVI_LAST);
    
    //把本身的mID存入到節點中,

//節點存放的是指針地址的數據,查了好幾天百度才弄清.

var = m_pRecordset->GetCollect(_T("mID"));
    strTmp = (LPCTSTR)_bstr_t(var);
    CString* pStr = new CString;
    *pStr = strTmp;
    m_webTree.SetItemData(temItem,(DWORD)pStr);

    //遞歸加載子節點
    LoadTreeCtrlData(temItem,strTmp);
    m_pRecordset->MoveNext();
}

}

//取出數據

CString strText;
HTREEITEM hItem = m_webTree.GetSelectedItem();
//strText = m_webTree.GetItemText(hItem);
CString str = (CString)m_webTree.GetItemData(hItem);
if(str!=NULL)
strText.Format(_T("%s"), str->GetString());
SetDlgItemText(IDC_ITEM_SET_EDIT,strText);

儘管磕磕絆絆的好幾天,今天總算弄出效果了.