Wilfred wrote (2023-02-23):

 WvV> I found another way that gives consistent codes on XP and W10x64:

 WvV> http://www.vlzn.nl/fmail/files/getchtest_win2.zip

 WvV> Can you test it in wine?

 WvV> For:

 WvV> UP
 WvV> DOWN
 WvV> F1
 WvV> F2
 WvV> INSERT
 WvV> DELETE
 WvV> a
 WvV> b

 WvV> I get:

 WvV>      0 - 00 - ' ' + 26
 WvV>      0 - 00 - ' ' + 28
 WvV>      0 - 00 - ' ' + 70
 WvV>      0 - 00 - ' ' + 71
 WvV>      0 - 00 - ' ' + 2D
 WvV>      0 - 00 - ' ' + 2E
 WvV>     97 - 61 - 'a' + 41
 WvV>     98 - 62 - 'b' + 42

$ wine getchtest_win2-mingw32.exe
    0 - 00 - '    0 - 00 - '    0 - 00 - '    0 - 00 - '    0 - 00 - '    0 - 00 - '   97 - 61 - 'a' + 41
   98 - 62 - 'b' + 42

(line breaks after 'a' and 'b' only)

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