CODEWITHSUNDEEP
ncurses
Félix Faisant
Félix Faisant

Reputation: 301

ncurses clear() is not differential

I noticed that function clear() retransmit all screen to terminal instead of transmitting only the differences, as excepted with ncurses.

I'm working with SSH so I can see the difference on a 180x60 terminal :

The refresh rate is 0.5s and the differences between each frame is about 20 characters.

How can we explain this and clear screen more efficiently ?

Upvotes: 0

Views: 803

Answers (1)

Craig
Craig

Reputation: 4840

From the man page:

The clear and wclear routines are like erase and werase, but they also call clearok, so that the screen is cleared completely on the next call to wrefresh for that window and repainted from scratch.

Try erase()

Upvotes: 1

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