title: WinForm off screen preventing
body: <p>Following my <a href="https://stackoverflow.com/questions/11531088/form-move-inside-client-desktop-area">previous post</a> </p>
  
  <p>I'm able to prevent winform off screen when user make some drag-drop, 
  however I notice that when I move my form, mouse cursor seems running fastly, more than winForm, in fact, when Drag-Drop is finished mouse cursors appears in a position off form. 
  Is there some way to prevent this?</p>