height - Vertical spacing of cells containing a parbox -

i have complicated longtable several levels of nested tabular environments. text wrapping inside cells , have contents aligned @ top use \parbox[t][][t], however, height of parbox computed without margin such following \hline overlaps text.

a minimal example reproduce behavior is

\documentclass{article} \begin{document}  \begin{tabular} {|p{0.2\textwidth}|}   \hline    cell looks good. \\   \hline    \parbox[t][][t]{1.0\linewidth}{     not happy this.   } \\   \hline  \end{tabular}  \end{document} 

this produces following output (sorry, can't post images yet): image of generated output

of course, there no reason use parbox in example above, need them in actual document.

i avoid providing height of parbox (such \parbox[t][5cm][t]). there clean way add margin either bottom of parbox or before hline?

sorry answer own question, have found solution adding vspace each cell outside parbox.

here's code:

\documentclass{article} \begin{document}  \newcommand{\pb}[1]{\parbox[t][][t]{1.0\linewidth}{#1} \vspace{-2pt}}  \begin{tabular} {|p{0.2\textwidth}|}   \hline    cell looks good. \\   \hline    \pb{     i'm happy this.   } \\   \hline  \end{tabular}  \end{document} 

the output: image of generated output

i missed before because didn't have space between closing brace of parbox , vspace. turns out space crucial.