Thunderbird Last Snapped Position

[bytos]

Firefox didn't work with FancyZones, but Thunderbird did.

If possible, I'd like Firefox to remember its last snapped position on restart without gaps, but I use the browser maximized most of the time.

Thunderbird is always snapped to either side, but when restarted it shows three gaps: side (next to screen edge), bottom, and top (smaller gap and similar to the gaps on all sides when snapping unless I set snapping gap to -1).

The window also overlaps a little bit the window to its side and even when there's a bottom gap, the top border is visible and touches the top edge of the screen.

[RamonUnch]

This is not really related to AltSnap nor FancyZones.

Many programs restore their previous position at window creation.
However since Windows 10 there are invisible borders (resizing borders are invisible).
Those borders would not matter outside the fact, that on window creation, Windows tries to keep it all inside the monitor. This was already the case on vary old windows versions, however they never updated this function to account for invisible borders.
This means that when a window is touching the border of a monitor it will be pushed/squished inside the monitor, so that those invisible borders are fully inside the monitor.

Some programs fix this by double resizing (Firefox does). This mean when you start it, you will see the main window appear with almost the proper size, then it will resize to actually restore its original size with borders touching the side. This is easy to see if your computer is a bit slow.

The 1px border is another issue.
There is a 1 pixel border on each window that disappear as soon as the window is no longer selected, hence the -1 border trick, however there is no perfect solution because the border appears/disappears.

For now AltSnap does not support automatic restoring/Snapping of windows at creation. There are a couple issues talking for that I will Update the post whan I get more time.
see: #323

[bytos]

FancyZones remembers Thunderbird and Office 2024 apps last snapped positions, is an option in settings, without it, it doesn't happen.

AltSnap allows Office 2024 apps to start in their last snapped positions, too, but not Thunderbird.

Also used -1 border in FancyZones.

[RamonUnch]

AltSnap allows Office 2024 apps to start in their last snapped positions, too, but not Thunderbird.

What do you mean I am the developer there is zero code in AltSnap to snap a window that you are not actively clicking, If Office is restoring itself it is not related to AltSnap or it is a bug or we are not talking about the same thing?

[bytos]

I just tested, using only Windows snap, I snap Word to the side and exit the application. Next time I run the app, it is around the middle of the screen.

I start AltSnap and do the same test, Word remains snapped to the side and no gaps showing.

The one thing FancyZone did, that AltSnap doesn't, is for Thunderbird to remain snapped and show no gaps, just like Office apps do.

[RamonUnch]

This is probably because AltSnap does not snap a program in the same manner than Native Windows snapping does. This is because there is no API to use native Windows Snapping and AltSnap has to emulate snapping by actually changing the window position, like if you had manually resized it.

If you try to disable AltSnap, and manually place Word Window to one side (without snapping) then it should restore to its position after restart.

Given that Thunderbird does not behave the same I suspect that FancyZones has a special treatment to re-snap programs automatically.

[bytos]

After uninstalling PowerToys, Office apps remembered their last snapped positions, but today can't replicate this behavior with only AltSnap.

Word does still remember, but not the rest of the Office apps.

Will check PersistentWindows.