The issue of Qt application being unable to write data to the clipboard when performing write operations under Wayland

[张廷安]

Hello,


I noticed that in Wayland protocol, when I perform a copy operation in a program, the protocol performs some data operations through `SetSelection` function.
But when I set `Qt::WindowDoesNotAcceptFocus` via Qt in this program and write data via `setText` operation in `QClipboard`, the function `updateSelection` in Wayland will not send the `setSelection` signal. I found that the following code is causing the signal not to be sent.


`*globalKeyboard.focus.surface->client() == dataDevice->client()`.


may i ask why this judgment is necessary, and if I want my app to write clipboard data without getting focus, is there an alternative way I can do it?


Interested to hear back.


Best Regards.
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