Calibre 3.0.0 in Windows 10, highDPI

[CRussel]

Kovid -- first, I love the new high DPI support! Given I run on a pair of 28" 4K monitors, it really improves the look! Thanks!

Now, the bug: If I import a new book with Add, select it on the left of the main (centre) pane, and hit the 'e' key to edit the metadata, the window doesn't _appear_ to open, but now I'm locked out of Calibre, because it thinks there's a modal window open. I'm guessing it somehow ends up behind the main window.

This behaviour is consistent and repeatable on this computer. The workaround for now is to right-click and select Edit Metadata. This usually seems to work.

(Calibre 3.0.0, 64-bit. Windows 10 Enterprise 64-bit. Build 15063)

[BetterRed]

Originally Posted by CRussel

Now, the bug: If I import a new book with Add, select it on the left of the main (centre) pane, and hit the 'e' key to edit the metadata, the window doesn't _appear_ to open, but now I'm locked out of Calibre, because it thinks there's a modal window open. I'm guessing it somehow ends up behind the main window.

This behaviour is consistent and repeatable on this computer. The workaround for now is to right-click and select Edit Metadata. This usually seems to work.

(Calibre 3.0.0, 64-bit. Windows 10 Enterprise 64-bit. Build 15063)

I've had same symptoms, but intermittently, in calibre version 2.xx on Windows 7 and 10, most often (maybe only) in Preferences-Plugin->Configure plugin.

I've always put it down to my fat fingers and/or my window enhancers (Actual Tools), so I've never reported it.

FWIW: NirSoft's GUIPropView utility lists all active windows and there's a Bring to Top option.

BR

[CRussel]

This is new behaviour, and not exhibited on other 3.0.0 machines.

[BetterRed]

Originally Posted by CRussel

This is new behaviour, and not exhibited on other 3.0.0 machines.

Are they using same version of Windows?

Is Windows 10 Enterprise 64-bit Build 15063 an Inside Track release of Creator's Update ?

Have you tried running with no plugins, and running in Windows Safe Mode?

With the NirSoft utility I referenced you could prove the modal MDE window is hidden behind the main window.

BR

[kovidgoyal]

I cannot reproduce on my win10 nachine, usually when this kind of thing happens simply alt-tabbing to another application then back should take care of it.

[CRussel]

Originally Posted by BetterRed

Are they using same version of Windows?

Is Windows 10 Enterprise 64-bit Build 15063 an Inside Track release of Creator's Update ?

Yes.

Have you tried running with no plugins, and running in Windows Safe Mode?

No. Not an option, long term or even short term. Though if someone actually thinks it will identify the problem, I could probably do it to test.

With the NirSoft utility I referenced you could prove the modal MDE window is hidden behind the main window.BR

I'm actually beginning to suspect it's off canvas. I saw a brief flash to the right of the screen. And sure enough, GuiPropView says it's WAY over to the right, off screen. (at 8000+ pixels from the left.)

Originally Posted by kovidgoyal

I cannot reproduce on my win10 nachine, usually when this kind of thing happens simply alt-tabbing to another application then back should take care of it.

That didn't work. I'm _suspecting_ it's picking up a memory from some previous running where it was in a second (or third) virtual desktop (I'm using TaskView to run multiple desktops, routinely.)

[kovidgoyal]

If that didn't work then it is offscreen. UNfortunately Qt (the graphics toolkit calibre uses) tends to do this kind of thing once ina while if you use multiple monitors/different resolutions

[CRussel]

That appears to be what's happening. Is there any sort of easy fix to force it to recentre? (ie, a command line switch that forces the next start to lose that memory of a different screen?) That would be the simplest solution, it would seem to me.

[kovidgoyal]

Not that I know off, the only thing I can think off is reconencting the external monitor and moving it back once. Or you can delete dynamic.pickle in the calibre config directory which is where most window geometry information is saved.

[kovidgoyal]

Actually there is this: https://blogs.msdn.microsoft.com/gdu...ck-off-screen/

[CRussel]

Oh, I could easily script that (the delete of the dynamic.pickle file) as a startup command. Might be nice to add it as a calibre command line option it others start hitting this. As we all move to more HighDPI environments, I suspect we'll see more and more of this sort of thing.

[kovidgoyal]

You dont want to always delete it as it stores many other useful things as well, not just window sizes.

[CRussel]

Originally Posted by kovidgoyal

Actually there is this: https://blogs.msdn.microsoft.com/gdu...ck-off-screen/

Interesting. Looks like it might do the trick rather than killing Calibre and re-loading it with everything nuked.

[BetterRed]

Originally Posted by kovidgoyal

If that didn't work then it is offscreen. UNfortunately Qt (the graphics toolkit calibre uses) tends to do this kind of thing once in a while if you use multiple monitors/different resolutions

That supports my suspicion that Actual Tools Window Manager (multiple monitors, virtual desktops etc) plays a role in my similar intermittent problem.

@CRussel - my suggestion to try running with no plugins and safe mode was for diagnostic purposes only.

Added : GUIPropView has a Center selected window option

BR

[CRussel]

For what it's worth, we're at 3.4.2 or so, and it's STILL a significant problem on High-DPI, multiple monitor setups. And it's really the only application I have that seems to have this problem, with modal windows being opened off-screen.