Is there a way to disable a plasmoid toolbox that pops up while mouse is over the widget/plasmoid?

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http://unix.stackexchange.com – When you hover any plasmoid, a vertical toolbox appears to the left. The toolbox contains the resize, refresh, settings and remove buttons. Is there a way to remove this small panel appearing on every mouse over or at least change the event on which it appears (eg. ctrl+right click). Right click offers the remove and settings options, but not refresh and resizing. (HowTos)