Taskbar size does not update after changing display scaling percentage

[xoascf]

The theme has to be changed manually to be updated, it is not automatic.

[dremin]

I'm not able to reproduce this, have you set any compatibility options on RetroBar.exe by chance?

[xoascf]

I'm not able to reproduce this, have you set any compatibility options on RetroBar.exe by chance?

No compatibility options have been set.

In a clean installation of Windows 11, the taskbar does not update its size like the Properties window or the stock taskbar does.
Artifact from: https://github.com/dremin/RetroBar/actions/runs/1437230491

Stock taskbar behaviour:

2021-11-08.19-49-13.130.mp4

RetroBar behaviour:

2021-11-08.20-07-47.130.mp4

[dremin]

Thanks for the videos! Interesting, using the same settings as you I can reproduce this on Windows 11, but not Windows 10. I'll have to start debugging this further.

[dremin]

Okay, this is really strange. Windows doesn't send WM_DPICHANGED to the taskbar window for some reason, but it does if we change our size. I'm still working through trial and error to figure out what about the taskbar window causes this.

[xoascf]

Hey, check out this implementation:
https://github.com/PhilipRieck/WpfAppBar

It works fine for DPI changes in Windows 11, but everything else doesn't work as well as the ManagedShell implementation.

[dremin]

I am seeing DPI changes take effect again with Insider build 22581. However, I see #304 when that happens. Are you seeing the same?

[xoascf]

I am seeing DPI changes take effect again with Insider build 22581. However, I see #304 when that happens. Are you seeing the same?

Interesting, the taskbar goes up and down in position when changing DPI and then down to the bottom edge of the screen, for some reason it worked for me to change the DPI with RetroBar at login (the taskbar was able to adapt to the selected DPI), but then it didn't (I downloaded and ran the new version).

[vchirikov]

I don't see the retrobar at 200% scale on the third monitor at all :(
If I change scale to 100% and restart the app, it works, but doesn't update the size of taskbar after a scale change.

[dremin]

@xoascf I believe this is fixed by #945 when changing DPI on the primary display, as doing that broadcasts a TaskbarCreated message.

[xoascf]

@dremin I just tried again on Windows 11 with the latest two Insider builds, both of which fail to update the scale for RetroBar and still require reloading the parent or main theme (not sure if this happens on stable builds).

Additional info: No tweaks enabled (no OpenGlass, no ExplorerBlurMica, no Windhawk, no StartAllBack, no patched styles, still the same).

whynotupdatescale.mp4

[dremin]

@xoascf Oh well, thanks for testing! I wonder why my configuration is causing that message.