Re: Chgat() Functions Erase Pad Characters

[Grady Martin]

On 2017年01月08日 18時49分, Thomas Dickey wrote:
> The data owned by the pad isn't shared with the standard screen (stdscr)
>
> The manpage:
>
>       A pad is like a window, except that it is not restricted by the  screen
>       size,  and  is not necessarily associated with a particular part of the
>       screen.  Pads can be used when a large window is  needed,  and  only  a
>       part  of  the  window will be on the screen at one time.  Automatic re‐
>
> The mvchgat updates the standard screen, and the wgetch causes a refresh
> on the standard screen.
>
> So the updates to the standard screen overwrite the pad.
>
> Think of it as something like a newwin - making updates and refreshing
> one window will overwrite other windows that it happens to overlap.

Thank you for the insight, especially on a Sunday.

I think my logical course of action is to store "pad" data as cchar_t arrays, 
outputting them with the add_wchstr() family.  (This is not text data; it is a scrollable 
grid of numbers.)