Hi Alex,

I think that TRDrag* events should require that you are over the dragged element with your mouse, because now the behavior is that if the mouse gets outside the element, drag events are still being fired. But maybe I should fix this on my side.

To better illustrate my point look at this https://www.youtube.com/watch?v=4rHdiwGdr4s
When the mouse is completely out of the element the resizing is still occurring (because the drag event is still being applied), and then compare it to the behavior of resizing Playground -- there it happens only where it makes sense.

I haven't found any applicable example directly in Roassal, but you can look into my
smalltalkhub peteruhnak/roassal-contrib repo (same as we used before for moving stuff from dynacase)
at DCRTResizable>>example

On another note:
I added methods for moving to RTLayoutTranslator for all sides, so you can probably move it to Roassal if it looks ok to you.

Thanks,
Peter