title: windows 10 determine if "maintain aspect ratio" is set on a PCs GPU
body: <p>I am trying to programically determine if a video card is set to "maintain aspect ratio". I've tracked down this registry key in windows. </p>
  
  <p>HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration\\00\00
  scaling = </p>
  
  <ul>
  <li>4 = maintain aspect ratio 3 = scale full screen 2 = center image</li>
  </ul>
  
  <p>This would be great, but it appears that "maintain display scaling" will retain whatever that key was set to before. </p>
  
  <p>Does anyone have another location or another method to confirm, that a video card is set to maintain aspect ratio? (not using a cards GUI)</p>
  
  <p>I should clarify this isn't about DPI settings, this is about aspect ratio of the video being displayed. </p>