VirtualTreeView - different color of text in the same node

Question

I am attempting to create a view in TVirtualStringTree which will be similar to something like this:

Answer 1

You could simply use the toShowStaticText (StringOptions) option:

implementation

type
  PNodeRec = ^TNodeRec;
  TNodeRec = record
    Name: WideString;
    Count: Integer;
    IsBold: Boolean;
  end;

procedure TForm1.FormCreate(Sender: TObject);
var
  Node: PVirtualNode;
  NodeRec: PNodeRec;
  I: Integer;
begin
  VirtualStringTree1.TreeOptions.StringOptions := 
    VirtualStringTree1.TreeOptions.StringOptions + [toShowStaticText];
  VirtualStringTree1.NodeDataSize := Sizeof(TNodeRec);
  // Populate some data
  for I := 1 to 10 do
  begin
    Node := VirtualStringTree1.AddChild(nil);
    NodeRec := VirtualStringTree1.GetNodeData(Node);
    Initialize(NodeRec^);
    NodeRec.Name := 'Node' + IntToStr(I);
    NodeRec.Count := I;
    NodeRec.IsBold := I mod 2 = 0;
  end;
end;

procedure TForm1.VirtualStringTree1GetText(Sender: TBaseVirtualTree;
  Node: PVirtualNode; Column: TColumnIndex; TextType: TVSTTextType;
  var CellText: WideString);
var
  NodeRec: PNodeRec;
begin
  NodeRec := PNodeRec(TVirtualStringTree(Sender).GetNodeData(Node));
  if TextType = ttNormal then
    CellText := NodeRec^.Name
  else // ttStatic
    CellText := Format('(%d)', [NodeRec^.Count]);
end;

procedure TForm1.VirtualStringTree1PaintText(Sender: TBaseVirtualTree;
  const TargetCanvas: TCanvas; Node: PVirtualNode; Column: TColumnIndex;
  TextType: TVSTTextType);
var
  NodeRec: PNodeRec;
begin
  NodeRec := PNodeRec(TVirtualStringTree(Sender).GetNodeData(Node));
  if TextType = ttNormal then
  begin
    if NodeRec^.IsBold then
      TargetCanvas.Font.Style := TargetCanvas.Font.Style + [fsBold];
  end
  else // ttStatic
    TargetCanvas.Font.Color := clRed;
end;

Output: