Win32 embedding usage

[Chaoses-Ib]

I'm writing a Rust binding for voidtools' Everything plugin SDK. It allows the plugin to add custom config pages, by providng the HWND, WNDPROC and resizing callbacks. I'm looking for a Rust GUI library to make creating the config GUI easier and more flexible. Winio seems to be a suitable choice, relatively lightweight and has enough widgets.

There is a problem though. Hosting a Winio window inside the same GUI thread as the main program looks hard to do. So I tried to create another GUI thread and host Winio runtime there. It basically works after setting the parent window. But I can't make it a child window instead of an overlapped window, since Window doesn't support specifying the parent when creating, and

If you specify the WS_CHILD style in CreateWindowEx but do not specify a parent window, the system does not create the window.

Is it possible to add an interface to specifying the parent of Window? Also, do you think there are any other caveats when using Winio this way, like about layouting and cross-thread communication?

[Berrysoft]

Oh, well, really interesting to know there are still people using MDI windows:) I think I can add a method to create window with parent.

However, it seems that you are just embedding some widgets to an existing window. Maybe we should just allow creating widgets with an external parent? Would you like this solution?

[Chaoses-Ib]

You mean directly hosting widgets on the plugin GUI thread? I saw (some) Winio widgets needs to get messages from the parent window. If we hosting widgets directly then they can't do that since the parent window is on another GUI thread. Wouldn't that break something?

[Berrysoft]

Oh, you're right. Then let's back to the first plan.

[Berrysoft]

I have modified the API in #26 to make it clean. You can specify a parent window when creating Child<Window>. If it's just a HWND, you might want to use BorrowedWindow::borrow_raw and pass it to Child::new.

Additionaly I made the dark mode as optional feature. Hope you'll like it.

Haven't released. You can try it out with winio = { git = "https://github.com/compio-rs/winio.git" }

[Chaoses-Ib]

Thanks for your great work! I've already tried it. After removing WS_OVERLAPPEDWINDOW it works as expected.

[Berrysoft]

Oh, so you would like a title-less child. Well...

[Chaoses-Ib]

I think either as default is okay. Changing the style is just a trivial SetWindowLong anyway.

[Berrysoft]

You're right. Have fun with winio then:)

[Berrysoft]

I have added a windows-specific method to get and set window style. It chooses between SetWindowLongW and SetWindowLongPtrW automatically (thanks to windows-sys) and I think that might help you.