Doubt about $\partial\bar{\partial}$-lemma

147 Views Asked by At

Here is a version of $\partial\bar{\partial}$-lemma from Voisin's book.

Voisin

I'm confused. If we take $f$ to be any smooth function on $X$ and set $\omega=df$, doesn't the proposition imply that $\omega$ has to be zero? Am I missing something?