How to display a 'delete' icon on hover for a node in TVirtualStringTree?

I am working with TVirtualStringTree, and I would like to display a 'delete' icon when the user hovers over a specific node or the node is selected.

Example in VSCode Explorer View:

Is GetImageIndex the correct method to achieve this?

How can I handle the click event?

I tried the OnHotChange Event, but I couldn't figure out what to do with it. My solution uses GetImageIndex:

procedure TForm1.VstGetImageIndex(Sender : TBaseVirtualTree; Node : PVirtualNode; Kind : TVTImageKind; Column : TColumnIndex; var Ghosted : Boolean; var ImageIndex : TImageIndex);
begin
    case Kind of
        ikNormal, ikSelected :
        case Column of
            COL_NUM: begin 
                if (Vst.HotNode = Node) then begin
                    ImageIndex := DEL_IMAGE_IDX; // Vst.Images should be set
                end else begin
                    ImageIndex := -1;
                end;
            end;
        end;
    end;
end;

OnClick is also easy:

procedure TForm1.VstNodeClick(Sender : TBaseVirtualTree; const HitInfo : THitInfo);
begin
    if hiOnNormalIcon in HitInfo.HitPositions then begin
        Vst.DeleteNode(HitInfo.HitNode);
        Exit;
    end;
// every other click handling ...
end;