Unable to paste from clipboard while egui application is running

[apexys]

Describe the bug
I'm building an application based on egui (master branch).
While this application is running, I am unable to use the clipboard on Windows 10.0.19043.
If I copy text, I can not paste it.
When I take a screenshot with Win-Shift-S, I get the pop-up, even showing the screenshot, but I am unable to paste it.
If it helps, it seems the application I'm pasting into hangs for a very short time (500ms?) after Ctrl-V.

To Reproduce
Steps to reproduce the behavior:

1. Clone the egui repo and run the demo app with cargo run --release -p egui_demo_app
2. Copy text from any window or take a screenshot
3. Try to paste it somewhere

Expected behavior
The copied content is inserted.

[emilk]

Pasting images is not yet supported (see #2108), but copy-pasting of text should work. Since nobody else has reported copy-paste not working on Windows, I would suggest this is something weird with your system.

Look in crates/egui-winit/src/lib.rs:538 and see if is_paste_command detect Ctrl-V, and if so, if self.clipboard.get() returns anything.

Also: run with RUST_LOG=debug and see if the log gives any clues

[apexys]

Thank you for your answer!

Maybe my issue was a bit non-specific:
I'm not talking about copying and pasting within egui, but between completely unrelated applications while an egui application is running in the background.
I tried disabling the clipboard feature in egui_glow, but since I'm using eframe, it just gets enabled again in https://github.com/emilk/egui/blob/master/crates/eframe/Cargo.toml#L82
Is there a way to completely disable clipboard integration with eframe?

I tried this on several computers running Windows 10 and the issue happens everywhere.

[apexys]

I guess this is related to #1031

EDIT: This seems to be the issue in arboard 1Password/arboard#84

I managed to get my application to work again by reverting to commit 2b0bf82 and I'll try to get a pull request done that requests a new arboard Clipboard for each clipboard operation in

egui/crates/egui-winit/src/clipboard.rs

Line 112 in 041f2e6

fn init_arboard() -> Option<arboard::Clipboard> {

instead of doing so once.

[emilk]

Oh wow, that's an "interesting" breaking change in arboard 😆

[emilk]

The commit that broke it should be #2067

[apexys]

Thank you for the quick fix!