[GRASS-dev] WinGRASS curses issue

[Moritz Lennert]

On Thu, November 1, 2007 13:28, Moritz Lennert wrote:
> On Wed, October 31, 2007 16:28, Glynn Clements wrote:
>>
>> Benjamin Ducke wrote:
>>
>>> I just noticed another, more severe problem on Windows:
>>>
>>> I can only use ESC key sequences in the first interactive text input
>>> window. When I progress to the next one, they don't work
>>> anymore. This means that I cannot create a new location
>>> from scratch under WinGRASS, because I can exit the
>>> first screen (the one asking for names) with ESC+ENTER,
>>> but the next one (the one for setting the default region)
>>> does not interpret EST+ENTER correctly anymore, meaning
>>> I can only quit it with CTRL+C!
>>>
>>> This happens with my GRASS binaries and Moritz'
>>
>> That would appear to be a problem with the curses implementation.
>>
>> The Esc-Enter behaviour is part of the vask library (V_call(), in
>> lib/vask/V_call.c). If it works in some cases and not others, I'm not
>> sure what can be done.
>
> I've just had a look at lib/init/set_data.c and don't really see what the
> problem is. A clue we have is that ESC-ENTER works in the first screen,
> but not in the region definition screen. In terms of code, the only
> immediate difference between the two I see is that the first is
> constructed directly in set_data.c, including the V_call(), whereas the
> second is called with E_edit_cellhd(&window, -1), so the actual screen
> construction and V_call() are in lib/edit/edit_cellhd.c. Could that make
> any difference ?
>
> I'll try to add some debug code, but first have to understand how to best
> do that in the vask environment.

A little more info:
When I leave the region definition screen using Ctrl-C, I get back to the
very first screen where you set location, mapset, etc. And this second
time, I cannot use ESC-ENTER either. The first time on that screen (when I
launch grass) it works... Is there something that remains in memory and
which confuses V_call ?

Moritz