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[platform-ui-dev] ControlDecorations and HoverShell


I recently fixed a GTK3 bug involving ControlDecoration and I noticed something odd.

When hovering over a ControlDecoration, a tooltip like widget is spawned. Originally I thought this was an SWT ToolTip, but it's actually a Shell with setRegion called on it (HoverShell).

Is there any particular reason for this? It seems like a lot more work to use a Shell with setRegion than it is to just use a regular SWT ToolTip.


Eric Williams
Associate Software Engineer - Eclipse Team
Red Hat