Auto resize Widget to maximum avail. space

[pospiech]

First of all make sure the layout is setup properly. The form should have a layout set and inside that layout there should be your widget. The code you posted in the first post is a mess, so I didn't analyze it, but at a first glance it seems incorrect.

Blame Trolltech not me. That code is auto generated.
It is simply a qwidget with a Gridlayout within the qwtwidget is placed.