assign a window to a specific monitor/display [feat]

[don41382]

Describe the problem

I can't programmatically assign / move a window two a display in a multi monitor setup.

Describe the solution you'd like

It would be nice, if the WindowBuilder would support assigning a Monitor/Display to a new window.

Alternatives considered

No response

Additional context

No response

[metkm]

should you be able to move your window between monitors or what you think is just opening the window on the other monitor?

[don41382]

Both. It would be nice to be able to: - specify the monitor on window creation - move a window after creation via a move_to_monitot method metkm ***@***.***> schrieb am So., 5. März 2023, 23:14:

…

should you be able to move your window between monitors or what you think is just opening the window on the other monitor? — Reply to this email directly, view it on GitHub <#6394 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AANP2PFCELUT4C72UAFY2WDW2UF5VANCNFSM6AAAAAAVOW22ZM> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[metkm]

Maybe you can do something like this for now. The one weird this was that my x and y positions of display 2 were mixed with display 1. This could be a problem with my system. I don't know.

use tauri::{Position, Window, WindowBuilder};

fn move_window_to_other_monitor(window: &Window, i: usize) -> tauri::Result<()> {
    let monitors = window.available_monitors()?;
    let monitor = monitors.get(i).ok_or(tauri::Error::CreateWindow)?;

    let pos = monitor.position();

    window.set_position(Position::Physical(
        tauri::PhysicalPosition{
            x: pos.x,
            y: 0
        })
    )?;

    window.center()?;
    Ok(())
}

fn main() {
    tauri::Builder::default()
        .setup(|app| {
            let window =
                WindowBuilder::new(app, "Main", tauri::WindowUrl::App("index.html".into()))
                    .build()?;

            move_window_to_other_monitor(&window, 1);

            Ok(())
        })
        .run(tauri::generate_context!())
        .expect("error while running tauri application");
}

[amrbashir]

• specify the monitor on window creation

you can use WindowBuilder::position to determine the position of a window which can be on another monitor. However, this in itself is not much useful without getting the monitors info before creating the window so I will open a PR to add AppHandle::available_monitors() and AppHandle::primary_monitor().

move a window after creation via a move_to_monitor method

Not needed and not very much practical since we can't know which coordinates inside that monitor would you want to assign your window so the solution given by @metkm is the way to do it.

[don41382]

Thanks for you support @amrbashir and @metkm. This helps me already!

How to stop tauri app at mutliple monitors and run only on user choose monitor

[dolev146]

so this is closed because the solution is what?

[dolev146]

@FabianLars also this is not clear :( makes me sad

[dolev146]

Maybe you can do something like this for now. The one weird this was that my x and y positions of display 2 were mixed with display 1. This could be a problem with my system. I don't know.

use tauri::{Position, Window, WindowBuilder};

fn move_window_to_other_monitor(window: &Window, i: usize) -> tauri::Result<()> {
    let monitors = window.available_monitors()?;
    let monitor = monitors.get(i).ok_or(tauri::Error::CreateWindow)?;

    let pos = monitor.position();

    window.set_position(Position::Physical(
        tauri::PhysicalPosition{
            x: pos.x,
            y: 0
        })
    )?;

    window.center()?;
    Ok(())
}

fn main() {
    tauri::Builder::default()
        .setup(|app| {
            let window =
                WindowBuilder::new(app, "Main", tauri::WindowUrl::App("index.html".into()))
                    .build()?;

            move_window_to_other_monitor(&window, 1);

            Ok(())
        })
        .run(tauri::generate_context!())
        .expect("error while running tauri application");
}

so how to use this ?

// Prevents additional console window on Windows in release, DO NOT REMOVE!!
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
use tauri::{Position, Window, WindowBuilder};
fn move_window_to_other_monitor(window: &Window, i: usize) -> tauri::Result<()> {
  let monitors = window.available_monitors()?;
  let monitor = monitors.get(i).ok_or(tauri::Error::CreateWindow)?;

  let pos = monitor.position();

  window.set_position(Position::Physical(
      tauri::PhysicalPosition{
          x: pos.x,
          y: 0
      })
  )?;

  window.center()?;
  Ok(())
}

fn main() {
  tauri::Builder::default()
    .run(tauri::generate_context!())
    .expect("error while running tauri application");
}