[vim/vim] GVim on Windows doesn't respond to scaling changes (#3102)

Bohr Shaw

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Jun 25, 2018, 10:33:43 PM6/25/18

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I switch between two HiDPI displays and their scaling is different.
Unless I restart GVim, its scaling remains fixed after I switch displays.

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K.Takata

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Jun 25, 2018, 10:55:09 PM6/25/18

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On Windows?
Right, Vim doesn't support per-monitor DPI now.
I haven't checked how to support it.

K.Takata

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Jun 25, 2018, 11:02:01 PM6/25/18

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On Windows?

Ah, you wrote that in the title.

Tetralux

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Aug 27, 2019, 7:51:45 PM8/27/19

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Suffer from this too, on Windows x64.

My primary 1440p monitor is good, my 4k secondary monitor blurs.

This can be fixed by calling SetDPIAwareness(2) at init time and then responding to the appropriate window message by scaling fonts, window size etc.

I've never done it, but my 10 minute glance at it leads me to that.

Christian Brabandt

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Aug 28, 2019, 2:16:16 AM8/28/19

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how about a PR then?

Dan Thompson

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Mar 2, 2020, 3:27:19 PM3/2/20

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Documentation: https://docs.microsoft.com/en-us/windows/win32/hidpi/high-dpi-desktop-application-development-on-windows

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Esme

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Dec 9, 2021, 8:27:51 PM12/9/21

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Manually enabling GDI scaling works well, per https://vi.stackexchange.com/questions/16622/how-to-adjust-gvim-to-my-hidpi-display-scaling-on-windows-10, perhaps you could simply enable this in an application manifest?

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Christian Brabandt

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Dec 10, 2021, 2:36:16 AM12/10/21

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so, how about a patch then?

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K.Takata

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Dec 13, 2021, 4:08:24 AM12/13/21

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Enabling gdiScaling is just a workaround, I think.
The proper solution sould be to implement PerMonitorV2 support, but it might not be so easy.

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Bram Moolenaar

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Jan 16, 2022, 9:16:34 AM1/16/22

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Closed #3102 via c81e9bf.

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