Question : Where to capture WM_CHAR message from parent

edwardlau@hactl.com.hk
Thursday, October 17, 1996

     Environment: MSVC 4.0 / Win95
     
     After reading from many discussions on the steps for creating in-place 
     editing of list control, I have finally made it. I can update any 
     subitems when EN_KILLFOCUS is captured. In addition, I want it to be 
     updated when Enter is pressed in the in place edit box. I think 
     WM_CHAR should be captured to check for enter key pressed, but where 
     and how can I capture the WM_CHAR message?? I don't want to derive a 
     new CEditinplace class and subclass it to the edit control of my list 
     control, since I only use it here and nowhere else. 
     
     By the way, how can I achieve the effect that when the number of 
     characters entered into the edit box exceed the length of the box, the 
     box will expand automatically instead of auto HSCROLL, just like the 
     default CListCtrl implementation on the edit label box?? Do I have to 
     handle it in WM_CHAR also???
     
     Thanks in advance..
     
     Edward , PEI, edwardlau@hactl.com.hk

---

Ravi -- Bikkula@albpig.cho.ge.com
Thursday, October 17, 1996

[Mini-digest: 3 responses]


You need to override pretranslatemessage for that. And that will solve   
your problem.

...................................................................
Ravi Kumar Bikkula
Off :
GE Fanuc Automation
Albany, NY 12203 5189
Ph #  (518) 464-4695
mail :              Bikkula@albpig.cho.ge.com
 -------------------------------------------------------------------------

     Environment: MSVC 4.0 / Win95
       

     After reading from many discussions on the steps for creating   
in-place
     editing of list control, I have finally made it. I can update any
     subitems when EN_KILLFOCUS is captured. In addition, I want it to be   

     updated when Enter is pressed in the in place edit box. I think
     WM_CHAR should be captured to check for enter key pressed, but where   

     and how can I capture the WM_CHAR message?? I don't want to derive a   

     new CEditinplace class and subclass it to the edit control of my   
list
     control, since I only use it here and nowhere else.
       

     By the way, how can I achieve the effect that when the number of
     characters entered into the edit box exceed the length of the box,   
the
     box will expand automatically instead of auto HSCROLL, just like the   

     default CListCtrl implementation on the edit label box?? Do I have   
to
     handle it in WM_CHAR also???
       

     Thanks in advance..
       

     Edward , PEI, edwardlau@hactl.com.hk

-----From: "Randy Taylor" 

Environment: MSVC 4.2 WinNT 4.0

You have two reasons to use a CEdit derivative:
1. You wish to use the DC::GetTextExtent to measure
    the text in the CEdit to determine whether to "grow" the CEdit
    to the right when the user types a lot of text.
2. You need to grow the CEdit to the right.
The best way is to derive from CEdit.

randy_taylor@ebt.com


-----From: Mario Contestabile

Given you can capture a click on any column & retrieve the item text,
you call "fct(pszItemText);" where fct is a hypothetical function name.

fct(pszItemText){

 RECT rect;
 INT result = YourListCtl.GetItemRect(Item, &rect, LVIR_LABEL);
 EditClass* pEdit = new EditClass;
 rect.bottom += 4;  // Either this or remove the WS_BORDER for a good look 
under 1024x768
 pEdit->Create(WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL, 
  rect, YourListCtl.FromHandlePermanent(YourListCtl.m_hWnd), (UINT)-1);
 CFont* pFont = GetFont();
 pEdit->SetFont(pFont);
 pEdit->SetWindowText(string);
 pEdit->SetFocus();
}

EditClass is derived from CEdit and has the following members.

void EditClass::OnKillFocus(CWnd*) 
{
 PostMessage(WM_CLOSE, 0, 0);
}

// "override" base class member function
void EditClass::PostNcDestroy() 
{
 delete this;
}

// "augment" base class member function
BOOL EditClass::PreTranslateMessage(MSG* pMsg) 
{
 if(pMsg->wParam == VK_RETURN){
  CString string;
  GetWindowText(string);  
  NotifyOwner(string);
  PostMessage(WM_CLOSE, 0, 0);
  return TRUE;
 }else if(pMsg->wParam == VK_ESCAPE){
  PostMessage(WM_CLOSE, 0, 0);
  return TRUE;
 } 
 
 return CEdit::PreTranslateMessage(pMsg); 
}

NotifyOwner() can tell the parent CWnd the string that was entered,
and YourListCtrl can modify the item's text...

mcontest@universal.com

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