(10-16-2018, 11:42 PM)DynV Wrote: I used Windows to take the screenshots (through Prt Sc key), then in GIMP I pasted from Windows buffer then made it into a new layer (ctrl-v, shift-ctrl-n).
Then it is one Gimp multi-layer file not saved, only in memory. Gone forever.
Considering that the lame Windows clipboard only holds a single entry, you should consider using a clipboard manager that will permit multiple entries, saving to disk as you go.
Easy in linux, for Windows have a look at
https://sourceforge.net/projects/copyq/
or
https://sourceforge.net/projects/ditto-cp/
Edit
I ran a few test in a Win 10 VM and while those applications are comprehensive clipboard managers, neither is wonderful for use with Gimp. CopyQ just does not link and Ditto works but always asking for permissions.
For quick-n-dirty screenshots that are immediately written to file, so little chance of losing due to power failure, an old application, not updated for Win 10 but seems to work. http://www.bcheck.net/apps/purrint.htm - get the Win7 bugfix file
When set up like this to Save to file https://i.imgur.com/HgoX0FL.jpg does what it says, PrtScr gets an imediate screenshot saved, no notifications. Load into Gimp as layers later.
worth a try.