Color VirtualStringTree rows with hidden nodes

三世轮回 提交于 2019-12-05 18:19:11

There is no such method to get visibility node index at this time. But you can make your own where you will iterate through the visible nodes and count each iteration. Something like this (how you implement it in real code is upon you):

function GetVisibleIndex(Tree: TBaseVirtualTree; Node: PVirtualNode): Integer;
var
  P: PVirtualNode;
begin
  Assert(Assigned(Node), 'Node must not be nil!');
  Assert(Tree.IsVisible[Node], 'Node must be visible!');

  Result := 0;

  P := Tree.GetFirstVisible;
  while Assigned(P) and (P <> Node) do
  begin
    Inc(Result);
    P := Tree.GetNextVisible(P);
  end;
end;
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