zero'ing margin in a qhboxlayout

[illuzioner]

i've got a simple widget that contains 2 children: a stackedwidget and a button. i applied a horizontal layout to it and was able to make all the margins zero.

in the stackedwidget, there is a single lineedit on one page and a date/time edit on the other page, both with horizontal layouts. with these layouts, however, i can't seem to zero out the margins. this causes part of the lineedit or date edit to be cut off when the widget is a certain height, which it's supposed to be. i attached the ui file for reference. i just want the entire widget to be the exact height of the lineedit.

how do i zero out these margins?

thanks! -- lou