Webui is crashing after closing in a thread.

[OsakiTsukiko]

Works just fine on the main thread but when i put it inside a separate thread it gives segfault on closing.
(i am on zig but i think this is not zig related)

Segmentation fault at address 0x7efd138ce7e0
???:?:?: 0x7efd138ce7e0 in ??? (???)
Unwind information for `???:0x7efd138ce7e0` was not available, trace may be incomplete

???:?:?: 0x7efd2269686f in ??? (libc.so.6)
???:?:?: 0x7efd2271aa4b in ??? (libc.so.6)

after closing the window

        var win = webui.newWindow();
        win.setHide(true);

        _ = try win.bind("toggle_close", toggleClose);
        win.setFrameless(true);

        try win.show(index);
        webui.wait();

this is my thread function ^

try dashboard.spawn();
defer dashboard.join();

[AlbertShown]

If you are using a WebView window, then webui.wait() should be in the main thread, this is by WebView design itself. In general, when dealing with GUIs, drawing the window is recommended to be all done in main thread.

[OsakiTsukiko]

If you are using a WebView window, then webui.wait() should be in the main thread, this is by WebView design itself. In general, when dealing with GUIs, drawing the window is recommended to be all done in main thread.

Is webui.wait() blocking? I need the main thread for something else, the webui window is just a config window (hence i spawn it on a diffrent thread)

[AlbertShown]

You can switch to browser window mode, then nothing to draw by WebUI so you can then call webui.wait() from your dashboard thread.

[OsakiTsukiko]

i dont think i follow, what happens in browser window mode? do i lose any features if i do this?

[OsakiTsukiko]

Also, why is it not safe to be on another thread? What differs between threads?

[AlbertShown]

i dont think i follow, what happens in browser window mode? do i lose any features if i do this?

In browser mode WebUI does not draw the window, because the window is an external program (web browser), therefore you can call webui_wait() from any thread.

About losing data in UI, you can easily solve it by using JavaScript to save data in backend, and send data back to UI when you re-open window. Another solution in Microsoft Windows is you can use Win32 APIs to hide WebView window.

Also, why is it not safe to be on another thread? What differs between threads?

If you started to learn how to use GTK, WebView, Qt, or any GUI library, you would understand that main thread is the recommended place to do any drawing event of the program.

[OsakiTsukiko]

By features I mean "borderless", "transparent" or such. Not app related features but window related ones or inconveniences like the search bar available under some circumstances.

I have used GTK and Qt prior but I've never had to spawn the main window in a separate thread.

I am thinking of moving all the dashboard to a separate app and transfer data via ipc.