Hi, there is simple plasmoid containing Plasma::ComboBox and Plasma::TreeView (tree view just below combo). When combo is clicked it opens some list view (with options to choose). The problem is that the list view appears underneatch the tree view. It looks like some kind of z-order problem or something.
The same situation I noticed when I stop mouse cursor under some tool button and tool tip message appears, sometimes the message appears underneatch other widgets
Is there a way to change this behaviour?
Thank for help.

setZValue() function solved the problem