Example: Column.OnGetDisplayText

• Jul 29, 2024

The following sample uses the OnGetDisplayText event. The event handler changes the category value of group nodes.

Delphi

procedure <Form>.<Column>GetDisplayText(Sender: TcxTreeListColumn;
  ANode: TcxTreeListNode; var Value: String);
begin
  if ANode.IsGroupNode then
// adding the number of the first level child nodes
    Value := Value + ' (' + IntToStr(ANode.Count) + ')';
end;

C++

void __fastcall <Form>::<Column>GetDisplayText(TcxTreeListColumn *Sender, TcxTreeListNode *ANode, AnsiString &Value) {
  if (ANode->IsGroupNode) {
// adding the number of the first level child nodes
    Value = Value + " (" + IntToStr(ANode->Count) + ")";
  }
}