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Home » Eclipse Projects » Eclipse Platform » Drag and drop of views fails in Eclipse(Trying to move a view in Eclipse fails - with error in the log. This always worked before)
Drag and drop of views fails in Eclipse [message #1859491] Sun, 11 June 2023 12:21 Go to next message
Peter Illing is currently offline Peter IllingFriend
Messages: 1
Registered: June 2023
Junior Member
I frequently set up Eclipse perspectives, moving views around in the display. I have used Eclipse for many years and this always worked perfectly.
Now, views don't move. Looking at the log file, I see that I keep getting an error that has to do with the graphics. No doubt, my setup is messed up, but I don't know in which way.

Here is a section from the call stack in the .log file in .metadata in my workspace:
at org.eclipse.swt.widgets.Tracker.drawRectangles(
at ----> org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.startDrag(
at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.lambda$0(

I am using Eclipse 2019-12 (4.14.0).
My Java is Java SE

My machine is a Macbook Pro, running Ventura 13.4, 2.4GHz Intel -core i5, Intel Iris Plus Graphics, 16GB. Pretty standard

I have attached an overview of the e4 section of the plugins folder.

I realize that Java 1.8 is no longer the latest, but the Eclipse - expect for this problem - works just fine. The software I work with needs Java 1.8, so I am hoping not to have to move.

Please offer a suggestion if you see what I have done wrong?

thanks, Peter
Re: Drag and drop of views fails in Eclipse [message #1859492 is a reply to message #1859491] Sun, 11 June 2023 15:59 Go to previous message
Nitin Dahyabhai is currently offline Nitin DahyabhaiFriend
Messages: 4450
Registered: July 2009
Senior Member

You can develop for Java 1.8 even if your release of Eclipse needs a higher version to run itself. That's why there's an Installed JREs
preference page, and one of the reasons it contains a list of JREs. Your problem most likely comes from using a release that's not at
all concurrent with your operating system, so update, and see if that fixes it. macOS changes API behavior between releases, sometimes
in odd and undocumented ways.

Nitin Dahyabhai
Eclipse Web Tools Platform
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