QSPLITTER designer how to add between...

[xrep]

Hello guys,

I have following ui structure

myApp
centralWidget QWidget
> groupBox QGroupBox
treeView QTreeView
menuBar

I need make splitter and put into it groupBox and treeView, but in designer, when I chose these two widgets icon for making splitter is grey.
When I hardcode it, GUI is broken when I start app...

Is here some special condition for adding widgets into splitter or?
Thx...

[ChrisW67]

The two items to be placed into a splitter cannot already be in a layout. Break the existing layout first.

[xrep]

got it.. thaks a lot