[Lazarus] VirtualTreeView bug

[ik]

Hello,

I'm trying to figure out why this keep on existing on VT from CCR
virtualtree-new .

The problem is that it display only the first char instead of the whole string.

My code:
------------------
....
type
  PTreeData = ^TTreeData;
  TTreeData = record
    Column1,
    Column2,
    Column3  : String;
  end;


procedure TForm1.FormCreate ( Sender : TObject ) ;
var
  Column : TVirtualTreeColumn;
  i      : integer;
begin
  Randomize;
  VST.Header.Options := VST.Header.Options +[hoVisible];
  VST.Header.Style   := hsFlatButtons;
  for i := 1 to 3 do
    begin
     Column         := VST.Header.Columns.Add;
     Column.Text    := 'column #' + IntToStr(i);
     Column.Options := Column.Options + [coAllowClick, coResizable];
     Column.Width   := UTF8Length(Column.Text) + 100;
    end;

  VST.TreeOptions.MiscOptions      := VST.TreeOptions.MiscOptions +
                                       [toEditable,toGridExtensions];
  VST.TreeOptions.SelectionOptions := VST.TreeOptions.SelectionOptions +
                                       [toExtendedFocus, toMultiSelect];

end;

procedure TForm1.btnAddRootClick ( Sender : TObject ) ;
Var
  Data  : PTreeData;
  XNode : PVirtualNode;
  Rand  : Integer;
begin
  Rand  := Random(99);
  XNode := VST.AddChild(nil);

  if VST.AbsoluteIndex(XNode) > -1 then
  Begin
   Data := VST.GetNodeData(XNode);
   Data^.Column1 := 'One ' + IntToStr(Rand);
   Data^.Column2 := 'Two ' + IntToStr(Rand + 10);
   Data^.Column3 := 'Three ' + IntToStr(Rand - 5);
  End;

end;

procedure TForm1.VSTChange ( Sender : TBaseVirtualTree; Node : PVirtualNode ) ;
begin
  VST.Refresh;
end;

procedure TForm1.VSTFocusChanged ( Sender : TBaseVirtualTree;
  Node : PVirtualNode; Column : TColumnIndex ) ;
begin
  VST.Refresh;
end;

procedure TForm1.VSTGetNodeDataSize ( Sender : TBaseVirtualTree;
  var NodeDataSize : Integer ) ;
begin
  NodeDataSize := SizeOf(TTreeData);
end;

procedure TForm1.VSTGetText ( Sender : TBaseVirtualTree; Node : PVirtualNode;
  Column : TColumnIndex; TextType : TVSTTextType; var CellText : WideString ) ;
var
  Data : PTreeData;
begin
  Data := VST.GetNodeData(Node);
  case Column of
    0 : CellText := Data^.Column1;
    1 : CellText := Data^.Column2;
    2 : CellText := Data^.Column3;
  end;
end;

procedure TForm1.VSTNewText ( Sender : TBaseVirtualTree; Node : PVirtualNode;
  Column : TColumnIndex; NewText : WideString ) ;
var
  Data : PTreeData;
begin
  Data := VST.GetNodeData(Node);
  case Column of
    0 : Data^.Column1 := NewText;
    1 : Data^.Column2 := NewText;
    2 : Data^.Column3 := NewText;
  end;
end;

...

-------------------------
Any ideas why it happens and how to solve this ?

Thanks,
Ido

<<attachment: vt.png>>

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