example:
      go: `w.SetTitleBar(false)`
【add】hide title bar,bind `StartDragging` function to Drag window.
      example:
      go: `_ = w.Bind("dragging", w.StartDragging)`

      example:
      html:`<div id="my_title_bar" style="width:100%; height:30px; background:red;"> My Dragging Title Bar</div>`
      js:`
          document.addEventListener("DOMContentLoaded", ()=>{
             document.querySelector("#my_title_bar").addEventListener("mousemove", event => window.dragging());
          });
       `