如何给CTreeView和CListView的结点唯一的值？

ldp333 2001-11-29 01:26:56
有个问题困扰着俺：如何给CTreeView和CListView的结点唯一的值？
我知道用:SetItemData和GetItemDate属性能行，但具体的使用却总不成功。能否给我举个例子？这对大虾您来说是举手之劳，对我却是莫大的恩赐。小弟先叩首了。
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ldp333 2001-11-30
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谢谢了，俺先试试。
nicolas 2001-11-29
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下面的m_ctrlTree.SetItemData(hThirdTempItem,nProgramID);代码行就是完成你说的功能


//========================================================================
BOOL CClient1Dlg::FillTreeData()
{
CString strSQL;

if(m_bAccessDB == FALSE)
{
AfxMessageBox(IDS_ACCESSDATABASEERROR);
return FALSE;
}

m_ctrlTree.DeleteAllItems();
m_btnClose.ShowWindow(SW_HIDE);

strSQL = "select distinct class from program where programid>0";
m_dbMan.Close();

m_dbMan.SetDatabase(m_chSysDir);
//m_dbMan.SetDatabase(".\\program.mdb");

m_dbMan.SetTable("program");
m_dbMan.SetQuery(strSQL);
m_dbMan.OpenMDB();
m_dbMan.OpenRecordset();


for(int i=1;i<5;i++)
AddTreeNodeData(i);

m_dbMan.Close();
m_btnClose.ShowWindow(SW_HIDE);

return TRUE;
}


//=======================================================================
void CClient1Dlg::AddTreeNodeData(int nIndex)
{
/*
*@ Author:yjx
*@ Date :2001-11-21
*@ Parameter :nIndex(1,2,3,4)
*@ nIndex =1(共享式点播节目):SchemeID=1,2
*@ nIndex =2(延迟点播节目):SchemeID=3
*@ nIndex =3(轮播节目):SchemeID=4 and segnum='Yes'
*@ nIndex =4(低延迟多播节目):SchemeID>=4 and segnum='No'
*/

COleVariant var;
char *buf;
CString strSQL,strClass,strSubClass,strProgramName,strFilter;
int nRowCount;
HTREEITEM hDad,hDad1,hDad2,hDad3;
TV_INSERTSTRUCT tvinsert,tvsubinsert,tvthirdinsert;

tvinsert.hParent = NULL;
tvinsert.hInsertAfter = TVI_LAST;
tvinsert.item.mask = TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_TEXT;
tvinsert.item.mask = TVIF_TEXT;
tvinsert.item.hItem = NULL;
tvinsert.item.state = 0;
tvinsert.item.stateMask = 0;
tvinsert.item.cchTextMax = 10;
tvinsert.item.iSelectedImage = 1;
tvinsert.item.cChildren = 0;
tvinsert.item.lParam = 0;

tvthirdinsert=tvsubinsert=tvinsert;

strSQL = "select distinct class from program where programID>0 ";

switch(nIndex)
{
case 1:
strFilter = " and schemeID<3 ";
break;
case 2:
strFilter = " and schemeID=3 ";
break;
case 3:
strFilter = " and schemeID=4 and segnum=Yes ";
break;
case 4:
strFilter = " and schemeID>=4 and segnum=No ";
break;
}

strSQL += strFilter;

if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(1);

nRowCount = m_dbMan.GetRowCount();

if(nRowCount<0) return;

switch(nIndex)
{
case 1:
tvinsert.item.pszText = "共享式点播节目";
hDad = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad;
break;
case 2:
tvinsert.item.pszText = "延迟点播节目";
hDad1 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad1;
break;
case 3:
tvinsert.item.pszText = "轮播节目";
hDad2 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad2;
break;
case 4:
tvinsert.item.pszText = "低延迟多播节目";
hDad3 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad3;
break;
}

for(int i=0;i<nRowCount;i++)
{
m_dbMan.GetRecordset(1)->SetAbsolutePosition(i);
var = m_dbMan.GetRecordset(1)->GetFieldValue(0);
strClass = (LPCSTR) var.bstrVal;

buf=(LPSTR)(LPCTSTR)strClass;
tvinsert.item.pszText = buf;

HTREEITEM hTempItem=m_ctrlTree.InsertItem(&tvinsert);
strSQL="Select distinct subclass from program where class='"+strClass+"'"+strFilter;
if(m_bQuery)
if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(2);

int nSecondLevelRows = m_dbMan.GetRowCount();
for(int j=0;j<nSecondLevelRows;j++)
{
m_dbMan.GetRecordset(2)->SetAbsolutePosition(j);

tvsubinsert.hParent=hTempItem;
var = m_dbMan.GetRecordset(2)->GetFieldValue(0);
strSubClass = (LPCSTR) var.bstrVal;
buf=(LPSTR)(LPCTSTR)strSubClass;
tvsubinsert.item.pszText=buf;

HTREEITEM hSubTempItem=m_ctrlTree.InsertItem(&tvsubinsert);
strSQL="select programname,programid from program where class='"+strClass+"'"+" and subclass='"+strSubClass+"'"+strFilter;

if(m_bQuery)
if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(3);

int nThirdLevelRows = m_dbMan.GetRowCount();
for(int k=0;k<nThirdLevelRows;k++)
{
m_dbMan.GetRecordset(3)->SetAbsolutePosition(k);

tvthirdinsert.hParent=hSubTempItem;
var = m_dbMan.GetRecordset(3)->GetFieldValue(0);
strProgramName = (LPCSTR) var.bstrVal;
buf=(LPSTR)(LPCTSTR)strProgramName;
tvthirdinsert.item.pszText=buf;
var = m_dbMan.GetRecordset(3)->GetFieldValue(1);
nProgramID = (int) var.iVal;
HTREEITEM hThirdTempItem=m_ctrlTree.InsertItem(&tvthirdinsert);
m_ctrlTree.SetItemData(hThirdTempItem,nProgramID);
}
}
}
}
nicolas 2001-11-29
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下面的m_ctrlTree.SetItemData(hThirdTempItem,nProgramID);代码行就是完成你说的功能


//========================================================================
BOOL CClient1Dlg::FillTreeData()
{
CString strSQL;

if(m_bAccessDB == FALSE)
{
AfxMessageBox(IDS_ACCESSDATABASEERROR);
return FALSE;
}

m_ctrlTree.DeleteAllItems();
m_btnClose.ShowWindow(SW_HIDE);

strSQL = "select distinct class from program where programid>0";
m_dbMan.Close();

m_dbMan.SetDatabase(m_chSysDir);
//m_dbMan.SetDatabase(".\\program.mdb");

m_dbMan.SetTable("program");
m_dbMan.SetQuery(strSQL);
m_dbMan.OpenMDB();
m_dbMan.OpenRecordset();


for(int i=1;i<5;i++)
AddTreeNodeData(i);

m_dbMan.Close();
m_btnClose.ShowWindow(SW_HIDE);

return TRUE;
}


//=======================================================================
void CClient1Dlg::AddTreeNodeData(int nIndex)
{
/*
*@ Author:yjx
*@ Date :2001-11-21
*@ Parameter :nIndex(1,2,3,4)
*@ nIndex =1(共享式点播节目):SchemeID=1,2
*@ nIndex =2(延迟点播节目):SchemeID=3
*@ nIndex =3(轮播节目):SchemeID=4 and segnum='Yes'
*@ nIndex =4(低延迟多播节目):SchemeID>=4 and segnum='No'
*/

COleVariant var;
char *buf;
CString strSQL,strClass,strSubClass,strProgramName,strFilter;
int nRowCount;
HTREEITEM hDad,hDad1,hDad2,hDad3;
TV_INSERTSTRUCT tvinsert,tvsubinsert,tvthirdinsert;

tvinsert.hParent = NULL;
tvinsert.hInsertAfter = TVI_LAST;
tvinsert.item.mask = TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_TEXT;
tvinsert.item.mask = TVIF_TEXT;
tvinsert.item.hItem = NULL;
tvinsert.item.state = 0;
tvinsert.item.stateMask = 0;
tvinsert.item.cchTextMax = 10;
tvinsert.item.iSelectedImage = 1;
tvinsert.item.cChildren = 0;
tvinsert.item.lParam = 0;

tvthirdinsert=tvsubinsert=tvinsert;

strSQL = "select distinct class from program where programID>0 ";

switch(nIndex)
{
case 1:
strFilter = " and schemeID<3 ";
break;
case 2:
strFilter = " and schemeID=3 ";
break;
case 3:
strFilter = " and schemeID=4 and segnum=Yes ";
break;
case 4:
strFilter = " and schemeID>=4 and segnum=No ";
break;
}

strSQL += strFilter;

if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(1);

nRowCount = m_dbMan.GetRowCount();

if(nRowCount<0) return;

switch(nIndex)
{
case 1:
tvinsert.item.pszText = "共享式点播节目";
hDad = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad;
break;
case 2:
tvinsert.item.pszText = "延迟点播节目";
hDad1 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad1;
break;
case 3:
tvinsert.item.pszText = "轮播节目";
hDad2 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad2;
break;
case 4:
tvinsert.item.pszText = "低延迟多播节目";
hDad3 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad3;
break;
}

for(int i=0;i<nRowCount;i++)
{
m_dbMan.GetRecordset(1)->SetAbsolutePosition(i);
var = m_dbMan.GetRecordset(1)->GetFieldValue(0);
strClass = (LPCSTR) var.bstrVal;

buf=(LPSTR)(LPCTSTR)strClass;
tvinsert.item.pszText = buf;

HTREEITEM hTempItem=m_ctrlTree.InsertItem(&tvinsert);
strSQL="Select distinct subclass from program where class='"+strClass+"'"+strFilter;
if(m_bQuery)
if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(2);

int nSecondLevelRows = m_dbMan.GetRowCount();
for(int j=0;j<nSecondLevelRows;j++)
{
m_dbMan.GetRecordset(2)->SetAbsolutePosition(j);

tvsubinsert.hParent=hTempItem;
var = m_dbMan.GetRecordset(2)->GetFieldValue(0);
strSubClass = (LPCSTR) var.bstrVal;
buf=(LPSTR)(LPCTSTR)strSubClass;
tvsubinsert.item.pszText=buf;

HTREEITEM hSubTempItem=m_ctrlTree.InsertItem(&tvsubinsert);
strSQL="select programname,programid from program where class='"+strClass+"'"+" and subclass='"+strSubClass+"'"+strFilter;

if(m_bQuery)
if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(3);

int nThirdLevelRows = m_dbMan.GetRowCount();
for(int k=0;k<nThirdLevelRows;k++)
{
m_dbMan.GetRecordset(3)->SetAbsolutePosition(k);

tvthirdinsert.hParent=hSubTempItem;
var = m_dbMan.GetRecordset(3)->GetFieldValue(0);
strProgramName = (LPCSTR) var.bstrVal;
buf=(LPSTR)(LPCTSTR)strProgramName;
tvthirdinsert.item.pszText=buf;
var = m_dbMan.GetRecordset(3)->GetFieldValue(1);
nProgramID = (int) var.iVal;
HTREEITEM hThirdTempItem=m_ctrlTree.InsertItem(&tvthirdinsert);
m_ctrlTree.SetItemData(hThirdTempItem,nProgramID);
}
}
}
}
nicolas 2001-11-29
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下面的m_ctrlTree.SetItemData(hThirdTempItem,nProgramID);代码行就是完成你说的功能


//========================================================================
BOOL CClient1Dlg::FillTreeData()
{
CString strSQL;

if(m_bAccessDB == FALSE)
{
AfxMessageBox(IDS_ACCESSDATABASEERROR);
return FALSE;
}

m_ctrlTree.DeleteAllItems();
m_btnClose.ShowWindow(SW_HIDE);

strSQL = "select distinct class from program where programid>0";
m_dbMan.Close();

m_dbMan.SetDatabase(m_chSysDir);
//m_dbMan.SetDatabase(".\\program.mdb");

m_dbMan.SetTable("program");
m_dbMan.SetQuery(strSQL);
m_dbMan.OpenMDB();
m_dbMan.OpenRecordset();


for(int i=1;i<5;i++)
AddTreeNodeData(i);

m_dbMan.Close();
m_btnClose.ShowWindow(SW_HIDE);

return TRUE;
}


//=======================================================================
void CClient1Dlg::AddTreeNodeData(int nIndex)
{
/*
*@ Author:yjx
*@ Date :2001-11-21
*@ Parameter :nIndex(1,2,3,4)
*@ nIndex =1(共享式点播节目):SchemeID=1,2
*@ nIndex =2(延迟点播节目):SchemeID=3
*@ nIndex =3(轮播节目):SchemeID=4 and segnum='Yes'
*@ nIndex =4(低延迟多播节目):SchemeID>=4 and segnum='No'
*/

COleVariant var;
char *buf;
CString strSQL,strClass,strSubClass,strProgramName,strFilter;
int nRowCount;
HTREEITEM hDad,hDad1,hDad2,hDad3;
TV_INSERTSTRUCT tvinsert,tvsubinsert,tvthirdinsert;

tvinsert.hParent = NULL;
tvinsert.hInsertAfter = TVI_LAST;
tvinsert.item.mask = TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_TEXT;
tvinsert.item.mask = TVIF_TEXT;
tvinsert.item.hItem = NULL;
tvinsert.item.state = 0;
tvinsert.item.stateMask = 0;
tvinsert.item.cchTextMax = 10;
tvinsert.item.iSelectedImage = 1;
tvinsert.item.cChildren = 0;
tvinsert.item.lParam = 0;

tvthirdinsert=tvsubinsert=tvinsert;

strSQL = "select distinct class from program where programID>0 ";

switch(nIndex)
{
case 1:
strFilter = " and schemeID<3 ";
break;
case 2:
strFilter = " and schemeID=3 ";
break;
case 3:
strFilter = " and schemeID=4 and segnum=Yes ";
break;
case 4:
strFilter = " and schemeID>=4 and segnum=No ";
break;
}

strSQL += strFilter;

if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(1);

nRowCount = m_dbMan.GetRowCount();

if(nRowCount<0) return;

switch(nIndex)
{
case 1:
tvinsert.item.pszText = "共享式点播节目";
hDad = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad;
break;
case 2:
tvinsert.item.pszText = "延迟点播节目";
hDad1 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad1;
break;
case 3:
tvinsert.item.pszText = "轮播节目";
hDad2 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad2;
break;
case 4:
tvinsert.item.pszText = "低延迟多播节目";
hDad3 = m_ctrlTree.InsertItem(&tvinsert);
tvinsert.hParent = hDad3;
break;
}

for(int i=0;i<nRowCount;i++)
{
m_dbMan.GetRecordset(1)->SetAbsolutePosition(i);
var = m_dbMan.GetRecordset(1)->GetFieldValue(0);
strClass = (LPCSTR) var.bstrVal;

buf=(LPSTR)(LPCTSTR)strClass;
tvinsert.item.pszText = buf;

HTREEITEM hTempItem=m_ctrlTree.InsertItem(&tvinsert);
strSQL="Select distinct subclass from program where class='"+strClass+"'"+strFilter;
if(m_bQuery)
if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(2);

int nSecondLevelRows = m_dbMan.GetRowCount();
for(int j=0;j<nSecondLevelRows;j++)
{
m_dbMan.GetRecordset(2)->SetAbsolutePosition(j);

tvsubinsert.hParent=hTempItem;
var = m_dbMan.GetRecordset(2)->GetFieldValue(0);
strSubClass = (LPCSTR) var.bstrVal;
buf=(LPSTR)(LPCTSTR)strSubClass;
tvsubinsert.item.pszText=buf;

HTREEITEM hSubTempItem=m_ctrlTree.InsertItem(&tvsubinsert);
strSQL="select programname,programid from program where class='"+strClass+"'"+" and subclass='"+strSubClass+"'"+strFilter;

if(m_bQuery)
if(!m_strQueryCondition.IsEmpty())
strSQL += m_strQueryCondition;

m_dbMan.SetQuery(strSQL);
m_dbMan.Query(3);

int nThirdLevelRows = m_dbMan.GetRowCount();
for(int k=0;k<nThirdLevelRows;k++)
{
m_dbMan.GetRecordset(3)->SetAbsolutePosition(k);

tvthirdinsert.hParent=hSubTempItem;
var = m_dbMan.GetRecordset(3)->GetFieldValue(0);
strProgramName = (LPCSTR) var.bstrVal;
buf=(LPSTR)(LPCTSTR)strProgramName;
tvthirdinsert.item.pszText=buf;
var = m_dbMan.GetRecordset(3)->GetFieldValue(1);
nProgramID = (int) var.iVal;
HTREEITEM hThirdTempItem=m_ctrlTree.InsertItem(&tvthirdinsert);
m_ctrlTree.SetItemData(hThirdTempItem,nProgramID);
}
}
}
}
zzh 2001-11-29
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比如你可以定义一个变量i,i的值不断增加，然后再把它的值设置为该节点的值，或者是通过数据库中的主键来保证。
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