title: How to get a print screen of the desktop without any windows or the taskbar?
body: <p>My application is a Windows Forms one.</p>
  
  <p>I tried using the windows wallpaper, but this depends on the "Fill", "Stretch", "Fit" or "Tile" settings.
  I just need the image as it is on the desktop, but including the part "under" the taskbar, because this part is visible in case of transparent taskbar.</p>
  
  <p>Why I need this? 
  Because I have a tray application which slides from under the taskbar when opening. And I need to set a mask there, so it can't be seen sliding, until it reaches the top of the taskbar. Again, this is only a problem when the taskbar is transparent.</p>