High DPI Improvements for Desktop App Developers in the Windows 10 Creators Update

The Discussion

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  Nice watching all these improvments. With Creators Update GDI apps are finally scaled, but it's too bad icons looks so blurry in the device manager for example.
  
  I wouldn't want to run these apps on my high-DPI Surface Book screen :/
  
  How about using some kind of algorithm like Scale2X (see: http://www.scale2x.it/) to get rid of the blurry and have something a lot better to look at ?

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  Do you know if WPF applications will be able to take advantage of Per Monitor V2 improvements?

   

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  Cool!

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  Do you know if WPF applications will be able to take advantage of Per Monitor V2 improvements?

  target your app for .net 4.6.2 and you have permonitor awareness by default :

  WPF applications are now enabled for per-monitor DPI awareness. This improvement is critical for scenarios where multiple displays of varying DPI level are attached to a single machine. As all or part of a WPF application is transitioned between monitors, the expected behavior is for WPF to automatically match the DPI of the app to the screen. It now does.

  https://blogs.msdn.microsoft.com/dotnet/2016/08/02/announcing-net-framework-4-6-2/

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  What in detail is different between System and System (Enhanced) in the app compatibility options? 

  With System I see no real difference/improvement. With System (Enhanced), it is better, but here I have the issue, that I need to invalidate the window/entry on the other monitor otherwise the text looks ugly (3rd item):

  <img src="https://www.dropbox.com/s/z03r5wsus625tlt/_system_enhanced_2.png?dl=1"/>

  When I move mouse over the entry/click it, it is crisp & clear as expected.

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  Perfect! Hopefully these hacks to add low-res 3:2 aspect ratio screen resolutions to bypass hi-dpi issues with multi-mon won't be needed for Surface devices any more:

  • https://blogs.msdn.microsoft.com/danchar/2014/11/01/hi-dpi-multi-mon-with-surface-pro-3-dpi-scaling-tweaks/
  • https://blogs.msdn.microsoft.com/danchar/2015/10/26/surface-book-and-surface-pro-4-high-dpi-multi-monitor-optimization-regkey-for-alternate-32-aspect-ratio-resolutions/
  • https://blogs.msdn.microsoft.com/danchar/2015/05/13/surface-3-intel-atom-x7-cherrytrail-multi-monitor-tweaks/

   

  And hopefully the new docking logic takes into account that a hi-dpi built-in panel used next to a low-dpi desktop monitor needs special handling. Currently OS logic assumes the built-in panel is much closer to the user than the desktop monitor which is not how most people use their screens; shifting focus between near <===> far is quite fatiguing over time.

  Can't wait for the official release!

  :thumbup:

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  Does PerMonitorV2 work for MessageBox too?

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  11:16, where to put this code in the app.manifest file?