🚀 go-pugleaf

Here is what I am doing:
LRESULT CALLBACK MyEditWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM 
lParam)
{
 LRESULT RetVal(0);

 if(uMsg == WM_WINDOWPOSCHANGING)
 {
  // this inline editor has a bad habit of re-positioning itself
  // back on top of the Caption after every key typed in,
  // so let's stop it from moving

  WINDOWPOS *WindowPos = (LPWINDOWPOS)lParam;
  WindowPos->flags |= (SWP_NOMOVE | SWP_NOSIZE);
 }
 else // everything else
  RetVal = CallWindowProc(OldEditProc, hwnd, uMsg, wParam, lParam);
   return RetVal;
}
bool __fastcall TListViewEx::CanEdit(TListItem* Item)
{
 bool RetVal(true);

   if (0 < ColumnToEdit)  // ignore the Caption, let it do its default 
handling
   {
    if (NULL != FOnSubItemEditing)
       FOnSubItemEditing(this, Item, ColumnToEdit, RetVal);
      if (RetVal)
      {
         HWND hEdit = ListView_GetEditControl(Handle);   // get the inline 
editor's handle
         SetWindowLong(hEdit, GWL_STYLE, ES_MULTILINE);

         if (NULL != hEdit)
         {
            TRect R;

            if(GetEditRect(Item, ColumnToEdit, R)) // determine the 
dimensions of the subitem being edited
            {
               MYWNDPROC TempEditProc;
               LONG TempStyle;

               // move the inline editor over the subitem
               MoveWindow(hEdit, R.Left, R.Top - 2, R.Width(), R.Height() + 
4, TRUE);

               // update the inline editor's text with the subitem's text 
rather than the Caption
               SetWindowText(hEdit, 
Item->SubItems->Strings[ColumnToEdit -1 ].c_str());

               // subclass the inline editor so we can catch its movements
               TempEditProc = (MYWNDPROC)GetWindowLong(hEdit, GWL_WNDPROC);
               if (TempEditProc != (MYWNDPROC)MyEditWndProc)
               {
                  OldEditProc = TempEditProc;
                  SetWindowLong(hEdit, GWL_WNDPROC, (LONG)MyEditWndProc);

                  // Get The Current Style;
                  TempStyle = GetWindowLong(hEdit, GWL_STYLE) | ES_MULTILINE 
| ES_AUTOVSCROLL;
                  SetWindowLong(hEdit, GWL_STYLE, TempStyle);
               }
            }
         }
      }
   }
   else if (NULL != OnEditing)
    OnEditing(this, Item, RetVal);
   return RetVal;
}
since I have added the Get/SetWindowLong(GWL_WNDPROC), as soon as the Edit 
control is displayed, an exception thrown with the error message that cannot 
access address 00000100.

Thank you
Sam

"Remy Lebeau (TeamB)" <no.spam@no.spam.com> wrote in message 
news:420900fb$1@newsgroups.borland.com...
>
> "Sam S. Firouz" <sfirouz@Hotmail.com> wrote in message
> news:4208d83b$1@newsgroups.borland.com...
>
>> 1 - Does any one know how to make that window a Multi line edit window?
>
> Once you have the handle, to can use Get/SetWindowLong(GWL_STYLE) to give 
> it
> the ES_MULTILINE style.
>
>> 2 - What message should I be listening for to be notified when
>> the text of the edit control has changed so I can resize the
>> edit control accordingly?
>
> The ListView should receive EN_UPDATE notifications via the WM_COMMAND
> message when the child edit control changes.
>
> Also, you can subclass the edit window' handle via
> Get/SetWindowLong(GWL_WNDPROC) and have your own window procedure check 
> for
> the WM_WIDOWPOSCHANGING message.  Every time a character is typed, the 
> edit
> window tries to resize and reposition itself automatically.  You can
> override the message's default values to specify your own size and 
> position
> values before then passing the message to the edit window's original 
> window
> procedure.
>
>
> Gambit
>
>