Digging this out to see if that’s possible nowadays?
Objective-C, if possible.
I have a Reporter with a dragging operation and while dragging, I need to turn off the selection marquee and the actual selection of GlyphsApp temporarily.
Otherwise when you move the thing around, you also select or even move Layer shapes, which is not desired.
Another problem is, that I want to keep the layer’s selection when dragging my thing.
Way back I even made the entire plugin a tool plugin, just because of that. But it has no tool functionality and should be a reporter. Now that I rewrite it, I stumbled again over this marquee issue.