QTableWidget, header cells margin

I can margin cells of QTableWidget header, or some cells on grid?

I guess you can use setContentsMargins() for the QTableWidgetItems

I can't find this function, maybe it dont present in Qt 4.3.2 ?

Sorry, I assumed it was a QWidget subclass, I see it is not.

You need a custom delegate for that in 4.3.2. Since 4.4 you'll be able to use stylesheets, but in 4.3 the default delegate doesn't support them.