Re: Scrolling.

"AliR \(VC++ MVP\)" <AliR@online.nospam>
Tue, 12 Jun 2007 16:46:49 -0500
Here is what you want to do.
Make your listbox an owner draw variable listbox. Also make sure you set the
Has Strings flag.

Then inherite a class from CListBox and implement MeasureItem and DrawItem
MeasureItem will tell the listbox how tall each item in the listbox is,
since one can be 3 lines and one 1 line.
DrawItem actually draws the text.
Here is an example:

void CMultiLineListBox::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
   CString Text;

void CMultiLineListBox::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
   CFont *pFont = GetFont();
   CRect Rect;
   CDC *pDC = GetDC();
   CFont *pOldFont = pDC->SelectObject(pFont);
   CString Text;
   lpMeasureItemStruct->itemHeight = Rect.Height()+5;


"TonyG" <> wrote in message

I though about using an edit control, but that won't work easily.

Sometimes my dialog is opened and then whenever my program want's to add a
line of text to it, I send the dialog a new line of text. The dialog uses
CListBox's InsertString to add the new string to the display. And in some
uses the list box could possibly contain hundreds of lines of text. CEdit
can't handle easy insertions.

I will look at using an owner draw list box, but I have never implemented
owner draw anything in any program I have written. I guess there is a
first time for everything. Any hints to help me?

"AliR (VC++ MVP)" <AliR@online.nospam> wrote in message

Obviously a standard listbox doesn't do that, but you can easily create
an owner draw list box, and when you draw the text using DrawText pass it

Or you can use an read only edit control.


"TonyG" <> wrote in message

I have a simple dialog that I have used in many programs. Most of the
dialog is covered by a giant list box. Whenever I have a bunch of text to
display to the operator, I use this dialog. An example is a bunch of
configuration errors that I detect during program startup. I have a nice
way of passing a title, my text and some other stuff to the dialog's
constructor. There is also some other class methods for other

My problem is this: The list box does not word wrap. If I submit a text
line wider then the list box, my subclassed list box automatically
adjusts the horizontal scroll bars. But what I would really want is word

Is there a way to implement word wrap with a list box?
Should I be using some other control?
Is there some other way to accomplish my needs?

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