// in .h file:
ArrayCtrl wraparray;

...

// somewhere in code initialization:
wraparray.AddColumn().Ctrls(THISBACK(CreateDocEdit));

...

// DocEdit factory callback:
MyProg::CreateDocEdit(One<Ctrl>& x)
{
	x.Create<DocEdit>().NoBackground().SetFrame(NullFrame()).Disable();
}

...

// Adding rows: here's where I guess things go wrong!
void MyProg::AddRowsToWrapArray(Vector<Value>& rows) 
{
	int line, cy_height;
	const int FONT_HEIGHT = GetTextSize("text sample", GetStdFont()).cy;

// this is weird, but necessary, or last included row won't show properly:

	if(wraparray.GetCount() > 0)
		wraparray.Remove(wraparray.GetCount() - 1);

	for(int ix = 0; ix < rows.GetCount(); ix ++) {
		wraparray.Add(rows[ix]);
		line = wraparray.GetCount() - 1;
		DocEdit * de = (DocEdit*)wraparray.GetCtrl(line, 0);
		cy_height = (de->GetLineCount() + 1)*FONT_HEIGHT;
		de->SetRectY(0, cy_height);
		wraparray.SetLineCy(line, cy_height);
		de->RefreshLayout();
	}

// this is weird, but necessary, or last included row won't show properly:
	wraparray.Add();
}

 int GetLineCount() const { return line.GetCount(); } 

Vector<Ln> line;

// this time around, wraparray ctrl factory callback creates RichTextCtrls instead:
void MyProg::CreateRichText(One<Ctrl>& x)
{
	x.Create<RichTextCtrl>().NoSb();
}

void MyProg::AddRowsToWrapArray(Vector<Value>& rows)
{
	int line, height;
	String str;
	for(int ix = 0; ix < rows.GetCount(); ix ++) {
// enter cell text as QTF:
		str = "[G1 " + rows[ix].ToString() + "]";	// G => make sure StdFont is used
		wraparray.Add(str);
		line = wraparray.GetCount() - 1;
// Get back pointer to cell RichTextCtrl
		RichTextCtrl * ra = (RichTextCtrl*)wraparray.GetCtrl(line, 0);
// Here's da trick!
		height = ::GetSmartTextHeight("\1" + str, ra->GetRect().Width()); // "\1" => tell function it's QTF
// resize both, RichTextCtrl and ArrayCtrl cell heights:
		ra->SetRectY(0, height);
		wraparray.SetLineCy(line, height);
		wraparray.RefreshLayoutDeep();
	}
}