[Run] "launch on monitor" setting for multimonitor user

[htcfreek]

Summary of the new feature/enhancement

A setting to define the start options of power launcher for multimonitor users would be nice.
Possible values are: default monitor, follow cursor [default value], display 1/2/3/...

Detailed description
In the specification of power launcher I found an entry who says: "For multiple monitors, the interface should follow where the mouse cursor is located". I interprated that the power launcher opens at the aktuall cursor position.

Not all Users want to open power launcher at the position of mouse cursor. For example I got used to the fact that the start menu opens every time on my main monitor.
Therefor It would be nice when the user can define the open behaviour of power launcher.

Proposed technical implementation details (optional)

I think there could be a dropdown menu with the following options in settings menu: at cursor position, default monitor, monitor 1/2/n

To help the user by chosing the monitor, you could show the number on the selected monitor while the cursor hover the dropdown entry.

Whe user opened the settings and the choosen monitor isn't available there should be shown a hint.

Other details:

• The default behavior/value after installation could be "on cursor position".
• For the options other than "cursor position" the powerlauncher should open centered on the screen.
• If the choosen monitor (monitor 1, monitor 2, ...) is not avalable the power launcher could open as fallback at the cursor position.

[crutkas]

it wouldn't be at the cursor, it is "center of the monitor where the mouse currently is"

[addrum]

I'm willing to take this on. I've been having a play and have the window always on the primary monitor already; I'm just wondering if RememberLastLaunchLocation is used for anything? I can't find any set references so it seems to be a placeholder? If that's the case, I'm thinking I can repurpose it to hold the setting for where to display the window?

Oh also are there any UI tests? e.g. assert window is at position x,y - I can add to it if so or create new if not

[addrum]

I've just seen #4576 so obviously RememberLastLaunchLocation is for that. I'll create a separate setting for monitor.

[htcfreek]

For the implementation we have at the moment please see this comment: #10330 (comment).

[crutkas]

This has been resolved in the 0.35 release. https://github.com/microsoft/PowerToys/releases/latest