tauri-apps
[bug] Tauriv2 Windows 10 borderless window has a black line at the top
Describe the bug
When using a borderless window on Windows 10 with Tauriv2, there's a black line appearing at the top of the window. This line seems to be part of the window's rendering, even though it should be completely borderless.
Reproduction
No response
Expected behavior
No response
Full tauri info output
✔ OS: Windows 10.0.22631 x86_64 (X64)
✔ WebView2: 128.0.2739.79
✔ MSVC: Visual Studio Community 2022
✔ rustc: 1.81.0 (eeb90cda1 2024-09-04)
✔ cargo: 1.81.0 (2dbb1af80 2024-08-20)
✔ rustup: 1.27.1 (54dd3d00f 2024-04-24)
✔ Rust toolchain: stable-x86_64-pc-windows-msvc (default)
✔ node: 20.17.0
✔ npm: 10.8.2
[-] Packages
✔ tauri 🦀: 2.0.0-rc.15
✔ tauri-build 🦀: 2.0.0-rc.12
✔ wry 🦀: 0.43.1
✔ tao 🦀: 0.30.1
✖ @tauri-apps/api: not installed!
✔ @tauri-apps/cli: 2.0.0-rc.16
[-] Plugins
✔ tauri-plugin-shell 🦀: 2.0.0-rc.3
✖ @tauri-apps/plugin-shell: not installed!
[-] App
✔ build-type: bundle
✖ CSP: unset
✔ frontendDist: ../src
Stack trace
No response
Additional context
No response
This currently can only be "fixed" by disabling the window shadows ("shadows": false in the window config).
It's a pretty old issue, see https://github.com/rust-windowing/winit/blob/master/src/platform_impl/windows/event_loop.rs#L1087-L1097 for example (winit is tao's upstream, rust's main windowing library). I'd like to check if what they're talking about there is an issue for us too but i can't give you a time estimate nor can i promise that it'll work.
当设置透明窗口transparent: true，隐藏窗口阴影shadow: false，顶部黑色1px就没有。然后通过css设置窗口透明圆角阴影，是可以实现的。
When only using a borderless (
decorations: false) window on Windows 10 with Tauri v2, there's a black line appearing at the top of the window。