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I used CGfxListCtrl like this

 CGfxColumnManager * pManager = m_wndList.CreateColumnManager();
 pManager->DefineColumn(0, "", NULL, LVCFMT_LEFT, 0,fhNumeric); 
  pManager->DefineColumn(1, "No.", NULL, LVCFMT_LEFT, 80,fhNumeric);  
 pManager->DefineColumn(2, "Station", NULL, LVCFMT_LEFT, 150, fhEdit);
  pManager->DefineColumn(3, "Address", NULL, LVCFMT_LEFT, 120,fhEdit);  
 pManager->DefineColumn(4, "Port", NULL, LVCFMT_LEFT, 150,fhEdit);  
 pManager->DefineColumn(5, "IP", NULL, LVCFMT_LEFT, 150, fhEdit);
 pManager->DefineColumn(6, "Location", NULL, LVCFMT_LEFT, 150, fhComboBox);
 pManager->DefineColumn(7, "Topology", NULL, LVCFMT_LEFT, 150, fhComboBox);
 pManager->DefineColumn(8, "Type", NULL, LVCFMT_LEFT, 150, fhComboBox); 
 int _DEFCOLS[] = { 0,1,2,3,4,5,6,7,8}; 
  pManager->DefineDefaultColumns(sizeof(_DEFCOLS)/sizeof(int), _DEFCOLS);  
 m_wndList.SetupColumnData();  
 CString sql,str; 
 m_adoMainTable.m_pDatabase=&m_db; 
 sql = "select * from MainTable"; 
 TRY
 {
  m_adoMainTable.Open();//(CRecordset::dynaset ,sql);
  if(m_adoMainTable.IsOpen())
  {   
   m_adoMainTable.Requery(); 
   if(!m_adoMainTable.IsEOF())//empty  ?
   {       
	m_adoMainTable.MoveFirst();   
	m_strCorpName=m_adoMainTable.m_CorpName; 
	m_nSaveCyc=m_adoMainTable.m_SaveTime;    
   }  
  }  
  m_wndList.OnInit();
  m_wndList.ModifyFlag(0,fHighRowSelect|fVertGrid|fHorizGrid|fAutoSort,0);  
  CManagerApp *pApp=(CManagerApp *) AfxGetApp();  
  m_wndList.m_bEnableEdit=pApp->m_curUser.bConfig>0?1:0;
  m_wndList.SetItemCount(MAX_STATIONNUM); 
  m_wndList.SetItemHeight(20);   
  
  int row=0; 
  m_adoStationTable.m_pDatabase=&m_db;  
  sql = "select * from StationTable"; 
  
  m_adoStationTable.Open(CRecordset::dynaset ,sql);
  if(m_adoStationTable.IsOpen())
  { 
   m_adoStationTable.Requery();
   int num= 0;
   if(!m_adoStationTable.IsEOF())//empty  ?
   {
	m_adoStationTable.MoveFirst();   
	num=m_adoStationTable.GetRecordCount();
   }
   m_wndList.SetRedraw(false);
   m_wndList.BindRecordset(&m_adoStationTable); 
    m_wndList.SetExInfoCallback((long (CWnd::*)(LXHDREX *))&CDlgSysConfig::GetExInfoCallback); 
   m_wndList.FillRecordsetColumn();
   m_adoRegionTable.m_pDatabase=&m_db;  
   sql = "select * from RegionTable"; 
   m_adoRegionTable.Open(CRecordset::snapshot,sql);
   if(m_adoRegionTable.IsOpen()) 
   {
	m_adoRegionTable.Requery();
	VERIFY(m_wndList.LinkRecordset("Layout", &m_adoRegionTable  , "RegionName", "RegionName",false));
   }
   m_adoTopologyTable.m_pDatabase=&m_db;  
   sql = "select * from TopologyTable"; 
   m_adoTopologyTable.Open(CRecordset::snapshot,sql);
   if(m_adoTopologyTable.IsOpen()) 
   {
	m_adoTopologyTable.Requery();
	VERIFY(m_wndList.LinkRecordset("TopologyName", &m_adoTopologyTable  , "TopologyName", "TopologyName",true));
   }  
   m_wndList.FillRecordsetItems(); 
   m_wndList.SetRedraw(true);
  }   
 }

But when I run it and double click on the cell that has fhComboBox type,the code stoped.

BOOL CWnd::OnNotify(WPARAM, LPARAM lParam, LRESULT* pResult)
{
 ASSERT(pResult != NULL);
 NMHDR* pNMHDR = (NMHDR*)lParam;
 HWND hWndCtrl = pNMHDR->hwndFrom;
 // get the child ID from the window itself
 UINT nID = _AfxGetDlgCtrlID(hWndCtrl);
 int nCode = pNMHDR->code;
 ASSERT(hWndCtrl != NULL);
 ASSERT(::IsWindow(hWndCtrl));  						//it stoped here
 if (_afxThreadState->m_hLockoutNotifyWindow == m_hWnd)
  return TRUE;	    // locked out - ignore control notification
 // reflect notification to child window control
 if (ReflectLastMsg(hWndCtrl, pResult))
  return TRUE;	    // eaten by child
 AFX_NOTIFY notify;
 notify.pResult = pResult;
 notify.pNMHDR = pNMHDR;
 return OnCmdMsg(nID, MAKELONG(nCode, WM_NOTIFY), &notify, NULL);
}

So I trace it form OnLButtonDblClk.

void CGfxInCombo::OnLButtonDblClk(UINT nFlags, CPoint point) 
{
 CWnd::OnLButtonDblClk(nFlags, point);
//   ClientToScreen(&point);
 NMHDR nh;					//this is a local var
  nh.hwndFrom = GetParent()->GetSafeHwnd();
 nh.idFrom = GetParent()->GetDlgCtrlID();
 nh.code = NM_DBLCLK;
  
 GetParent()->GetParent()->PostMessage(WM_NOTIFY, GetParent()->GetDlgCtrlID(), (LPARAM) &nh);
}

I go on trace and find the Address of "nh" was be changed at CExtNcFrameImpl::NcFrameImpl_PreWindowProc.

bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )
{					//Stop here,the method init vars
 m_bNcFrameImpl_RestoreBorder = false;

Then, How can I face to it?

E~,It’s that,My Dialog "class CDlgSysConfig :" is inherit from "public   CExtNCW < CExtResizableDialog > ".

CGfxInCombo is a child of CGfxCtrlList,and the CGfxCtrlList is a List Control of CDlgSysConfig which is inherit from "public   CExtNCW < CExtResizableDialog > ".

when I Double click the CGfxInCombo,I Send a WM_NOTIFY to CDlgSysConfig(the parent’s parent of the CGfxInCombo).

then I was tracing the code,I find that:

In the class of "CExtNCW < CExtResizableDialog >",the virtual method  

"virtual WindowProc( UINT message, WPARAM wParam, LPARAM lParam )"

take me to run

"bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )"

first,in that method,when it init its local parameters,the last Parameter(the local var nh) of the WM_NOTIFY message has been coverd,

(I Tracing the address of CGfxInCombo’s local var "nh" and find it changed at

bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )
{ //Stop here,the method init vars
 m_bNcFrameImpl_RestoreBorder = false;

when it run to my OnNotify Method

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

,the parameters has been changed yet and assert false.

This is a really interesting task. The CExtNcFrameImpl::NcFrameImpl_PreWindowProc() method does not handle the WM_NOTIFY message and it cannot change your message’s parameters. Could you create some test project demonstrating this problem and send it to the support mail box at this web site?

I try to create a sample about this problem.

First I create a simple dialog with vs6.0,and chage the parent of mydialog form CDialog to CExtNCW < CExtResizableDialog >,then I run it.

A message dialog show that:

"User breakpoint called from code at 0x********"

I find the debug window show message too:

"Second Chance Assertion Failed: File E:\bakef\vs6pro\Test624\Prof-UIS\Src\ExtPaintManager.cpp, Line 264"

What happend? And how do I deal with it?

As a see the FAQ,I add the wizard on my vs6.0 and create a sample(a very simple test project).

When I double click the item in my list control,it assert again.

I have send the test project to support email, the subject is  "the WM_NOTIFY message doesn’t work correctly".

Please check the email and I expect for your help.

The problem is in the CMyListCtrl::OnLButtonDblClk() method:

GetParent()->PostMessage(WM_NOTIFY, GetDlgCtrlID(), (LPARAM) &nh);

GetParent()->SendMessage(WM_NOTIFY, GetDlgCtrlID(), (LPARAM) &nh);

CGfxListCtrl and CGfxInCombo are parts of a Third-party control named gfxlist.I used it in my project,and it post but not send the WM_NOTIFY message to mydialog,then it bring me into this problem,I search for the author of the gfxlist first but no result,so I turn to our site for help.

I can only change the source code of the gfxlist to solve it.

Now,I know it’s not caused by our product but the gfxlist control,thanks.Best regards.

E~,It’s that,My Dialog "class CDlgSysConfig :" is inherit from "public   CExtNCW < CExtResizableDialog > ".

CGfxInCombo is a child of CGfxCtrlList,and the CGfxCtrlList is a List Control of CDlgSysConfig which is inherit from "public   CExtNCW < CExtResizableDialog > ".

when I Double click the CGfxInCombo,I Send a WM_NOTIFY to CDlgSysConfig(the parent’s parent of the CGfxInCombo).

then I was tracing the code,I find that:

In the class of "CExtNCW < CExtResizableDialog >",the virtual method  

"virtual WindowProc( UINT message, WPARAM wParam, LPARAM lParam )"

take me to run

"bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )"

first,in that method,when it init its local parameters,the last Parameter(the local var nh) of the WM_NOTIFY message has been coverd,

(I Tracing the address of CGfxInCombo’s local var "nh" and find it changed at

bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )
{ //Stop here,the method init vars
 m_bNcFrameImpl_RestoreBorder = false;

when it run to my OnNotify Method

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

,the parameters has been changed yet and assert false.

We received your e-mail. Please check if you may have forgotten to add the res subfolder of your test project into the ZIP file.

I have repack it and send it with the subject "the WM_NOTIFY message doesn’t work correctly 2" yet,please check it,thanks.

E~,It’s that,My Dialog "class CDlgSysConfig :" is inherit from "public   CExtNCW < CExtResizableDialog > ".

CGfxInCombo is a child of CGfxCtrlList,and the CGfxCtrlList is a List Control of CDlgSysConfig which is inherit from "public   CExtNCW < CExtResizableDialog > ".

when I Double click the CGfxInCombo,I Send a WM_NOTIFY to CDlgSysConfig(the parent’s parent of the CGfxInCombo).

then I was tracing the code,I find that:

In the class of "CExtNCW < CExtResizableDialog >",the virtual method  

"virtual WindowProc( UINT message, WPARAM wParam, LPARAM lParam )"

take me to run

"bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )"

first,in that method,when it init its local parameters,the last Parameter(the local var nh) of the WM_NOTIFY message has been coverd,

(I Tracing the address of CGfxInCombo’s local var "nh" and find it changed at

bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )
{ //Stop here,the method init vars
 m_bNcFrameImpl_RestoreBorder = false;

when it run to my OnNotify Method

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

,the parameters has been changed yet and assert false.

E~,It’s that,My Dialog "class CDlgSysConfig :" is inherit from "public   CExtNCW < CExtResizableDialog > ".

CGfxInCombo is a child of CGfxCtrlList,and the CGfxCtrlList is a List Control of CDlgSysConfig which is inherit from "public   CExtNCW < CExtResizableDialog > ".

when I Double click the CGfxInCombo,I Send a WM_NOTIFY to CDlgSysConfig(the parent’s parent of the CGfxInCombo).

then I was tracing the code,I find that:

In the class of "CExtNCW < CExtResizableDialog >",the virtual method  

"virtual WindowProc( UINT message, WPARAM wParam, LPARAM lParam )"

take me to run

"bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )"

first,in that method,when it init its local parameters,the last Parameter(the local var nh) of the WM_NOTIFY message has been coverd,

(I Tracing the address of CGfxInCombo’s local var "nh" and find it changed at

bool CExtNcFrameImpl::NcFrameImpl_PreWindowProc( LRESULT & lResult, UINT message, WPARAM wParam, LPARAM lParam )
{ //Stop here,the method init vars
 m_bNcFrameImpl_RestoreBorder = false;

when it run to my OnNotify Method

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

,the parameters has been changed yet and assert false.

Oh,I’m sorry for that.

The CGfxListCtrl control is not part of Prof-UIS. We can help you only if you create some test project with this control for us.