I'm writing a program in curses and sometimes happens that if I leave the program opened and I use other terminal tabs for a while, when I go using the program again it seems like it has refreshed something and something has disappeared... I cannot show pics or screenshots because I haven't understood yet well when and how it happens... Is there a way to prevent or fix this?
Bug with refresh in python curses
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screen.getchreads fromstdscr, and if it refreshes (due to any change on the screen), will overwriteboxes. You could change that tobox.getch, as I did in scroll page by page or line by line using python cursesThe manual page for
getchsaysIn your sample program you used
which only applies to reading from the standard screen. If you read from the
boxwindow, you should set the keypad flag on that:The manual page for
keypadsaysthat is, it is the default for each window.
A curses program with multiple windows can choose to read from different windows at different times. There is only one input buffer for each screen, but the side-effect of refreshing the current window makes it simpler to manage updates to the windows. (For complicated window stacking order, you would use the
panellibrary rather than rely upon this side-effect).