title: How to show a check box in TListView header column?
body: <p>I need to have a check box in a column header of a TListView:</p>
  
  <p><img src="https://i.stack.imgur.com/zT1By.jpg" alt="enter image description here"></p>
  
  <p>I have tried the following code:</p>
  
  <pre><code>with CheckBox1 do
  begin
    Parent := ListView1;
    Top := 0;
    Left := 4;
  end;
  </code></pre>
  
  <p>but the check box doesn't always work as expected. How can I properly create a check box in TListView header column ?</p>