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Images appears blurry in image viewer when Windows scaling mode is set to 150%


Images appears blurry in image viewer when Windows scaling mode is set to 150%

Post by sebascomeau »

Hi,

Some of our users set their windows scaling mode to Larger - 150%. Images in the WpfImageViewer appears blurry if I compare to scale Smaller - 100% (default). We had complains on this and we tried to change the SizeMode property but the problem is still there.

Take a look to the following print screens.

Smaller - 100% (default) [96 dpi]
http://cdn.ccnb.ca/vintasoft/smaller100.png

Larger - 150% [144 dpi]
http://cdn.ccnb.ca/vintasoft/larger150.png

Thanks,
SГ©bastien Comeau

Re: Images appears blurry in image viewer when Windows scaling mode is set to 150%

Post by Alex »

Hi SГ©bastien,

Your clients have blurriness because the Desktop Window Manager (DWM) virtualizes and scales the application to account for high DPI.

For more info please read the "Writing DPI-Aware Desktop and Win32 Applications" article:
https://msdn.microsoft.com/en-us/librar ... s.85).aspx

and the "Developing a Per-Monitor DPI-Aware WPF Application" article:
https://msdn.microsoft.com/en-us/librar ... s.85).aspx

We will add support for "per Monitor–DPI Aware Applications" in our WPF viewers in future version of SDK.

Best regards, Alexander


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