r11993: searchable comboboxes don't work

[Nazalassa]

Filtering is done through STRICMP which only compares strings in dictionary order. Thus searching things in comboboxes does not filter according to the query string as expected. I think the intended function is strstr(), which searches for substrings, or maybe strcasestr() (case-insensitive variant) which however is non-standard.

Additionally, when typing the selection goes down the list, which is weird.

[prissi]

Indeed, also the making visible was strange, hidden elements shoudl stay hidden. And there is tstrcasestr; but then it matches often not the cities I expected. strstr seems to do more what one would expect.
"Ahr" matches "kein Fahrplan vorhanden" which is not what a user expected. Als "Lan" is still with this entry. See r11994

[Nazalassa]

In r11994 no entries are hidden, the selection just jumps to the first matching item. (I don't know if this is intentional or not)

[prissi]

True, so r11995 is better?

[Nazalassa]

Yes! It works. Thank you!