Qt Forms Designer - Baffled

[Asperamanca]

I try to do something every simple:

MainWindow
   Vertical Layout
      Horizontal Layout
         Line edit
         Button
      Text edit

I am completely lost how to achieve this with designer.
I have tried:

• Creating Vertical layout first, Horizontal second (inside vertical layout). The layouts are how I want them, but I cannot drag the line edit and button into the horizontal layout (neither in the forms view on the left nor in the tree on the right). I tried placing them into the vertical layout first and then "select ancestor", but that does not offer me the horizontal layout
• Creating horizontal layout with line edit and button first, then trying to put it into the vertical layout. View, tree, context menu, nothing seems to work

[Asperamanca]

Easiest solution: Use a grid layout. Forget about nested layouts in designer.

[JKSH]

This is the workaround I use:

1. Select the layout that I want to put widgets in
2. In the "properties" pane (bottom-right of Qt Creator), give the layout a 50-pixel margin
3. Drag the widgets in
4. Remove the margin added in #2