I just created a pull request a few hours ago adding the info window to stations, depots and the HQ in the dat files.
There seems to be a bug in simutrans-extended that prevents depots showing the info window. I did some quick research in the code but couldn't find the reason for this yet.
I can only enable or disable the info window in the dat files. I guess window-order is hard coded so it has to be changed in the simutrans-ex sources.
For me, current window order feels inconsistent and bad ordered.
Current state of window-order:
using left-click only
- stations: station, marker, vehicles, pdestrians, building info, road/track
- depots: marker, vehicles, depot, road/track, don't know about pedestrians, building info does not seem to be working!
- for HQ: marker, finances, building info, base
using ctrl-left-click
- stations: building info, vehicles, pedestrian, private cars, marker, station, road
- depots: depot, vehicles, marker, road, don't know about pedestrians or private cars, also no building info here
- hq: finances, building info, marker, base
So this feeels pretty inconsistent and chaotic.
I would suggest the following for consistence reasons.
1st: Window order is always the same, no matter what is built on the tile.
2nd: key modifiers allow "skipping" some windows but don't change the order.
3rd: the remover tool should also use the same order, for sure skipping steps that are not removable (player vehicles)
Order:
- Vehicles: (left click) player vehicles, private cars
- Building: (ctrl-left-click) depot, station, finances, marker
- Ways: (alt-left-click) signals, tracks/roads/canals, crossing
- Other windows I have never used yet: pedestrians
So when you use only left-click, you will first open vehicle windows, then building infos, then way infos and in the end pedestrians and all the other annoying stuff.