When using a program like
htop - mouse scroll wheel action will not do anything.
How can I reproduce such behavior in my Bash script?
I guess there should be a way to tell the terminal to ignore scrolling requests. How is that done?
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htop happens to use ncurses
ncurses (and other things that use the full screen in a terminal) initializes the terminal using the terminfo capability
smcup. For xterm (and terminal emulators that imitate it), that switches to the alternate screen. Those terminals may respond to a wheel mouse by sending up/down cursor keys instead of scrolling the terminal window (which you would see in
htop by the focus-line moving up/down). Your bash script may see those cursor keys, but not handle them.
You can experiment with the feature in a script using
to switch to the alternate screen, and
to switch back to the normal screen.