Edit box unlimited

[pm44xl22]

Hi all, I'm using a edit box as an "append log" for my program.

I set it to "multiline" so I can write a new log every time. To write the log I append text using this code

CString strLine;
   // Add CR/LF to text
   strLine.Format(_T("\r\n%s"), pszText);
   // Get the initial text length
   int nLength = m_logedit.GetWindowTextLength();
   // Put the selection at the end of text
   m_logedit.SetSel(nLength, nLength);
   // Replace the selection
   m_logedit.ReplaceSel(strLine);

The problem is that the edit box is keeping about 3-4000 lines. After that the edit box won't log more text and keeps itself stucked in adding more text.

I thought two solutions:

1) Increasing its size to unlimited or something
2) Deleting previous text (like a ms-dos prompt does)


Can you help me in the simpliest way you can please?

[Skizmo]

The simples way is option 1 using SetTextLimit. The nicest way is option 2 because it eliminates the entire problem.

[pm44xl22]

What about solution number two?

How do I make "runtime deleting previous contents" ?

[Arjay]

You can also wire up a CString variable using the DDX mechanism and let MFC handle the data transfer for you.

Another approach is to use a List Control set to report mode. That way you can append a new line without having to overright the previous text. If you were really clever, you could make the List Control virtual and bind to a collection.

[Skizmo]

What about solution number two?

How do I make "runtime deleting previous contents" ?

Simply use SetSel and ReplaceSel to delete a part of text at the beginning of your editbox.

[pm44xl22]

Do you find that it may be useful sublassing the control?

[VictorN]

You could also use a ListBox like A Logging ListBox Control