Viewer - inform user about different X/Y DPI

[user0]

XnViewMP 1.6.1 64bit
Windows11 (22H2), display resolution 3840x2160, win scaling 150%

Viewer
from time to time people are not aware why their images renders stretched/compressed (due to different X/Y DPIs)
[1,2,3,4..]

there are few ways to approach this issue:
- uncheck 'Adjust zoom if X/Y DPI are different' in Settings OR
- equalize image DPI via 'Set dpi...' dialog

guess fixing image is the correct one as there is no purpose to have photos different horizontal/vertical DPIs,
eg there are no consumer devices with non-square pixels anymore


Suggestion

• add popup message when opening an image with different X/Y DPI
  
  something like:
  "Image has different X/Y dpi and may render stretched/shrunk.
  Would you like to fix this?"
  Yes - open Change DPI dialog
  No - close popup
  
  ☑ 'Do not ask again' checkbox
  Yes/No - just do not show this popup anymore

Related

So it's probably a good idea to show a warning to the user or a message in the status bar in this case.
This warning could have a button to invoke the SET DPI dialog box.