为什么WebViewControlProcess.CreateWebViewControlAsync()从未完成?

我正试图编写一些使用 Windows.Web.UI.Interop.WebViewControl

使用winit、winapi和winrt板条箱,相关代码归结为:

use winit::os::windows::WindowExt;
use winit::{EventsLoop, WindowBuilder};

use winapi::winrt::roapi::{RoInitialize, RO_INIT_SINGLETHREADED};
use winapi::shared::winerror::S_OK;

use winrt::{RtDefaultConstructible, RtAsyncOperation};
use winrt::windows::foundation::Rect;
use winrt::windows::web::ui::interop::WebViewControlProcess;

fn main() {
    assert!(unsafe { RoInitialize(RO_INIT_SINGLETHREADED) } == S_OK);

    let mut events_loop = EventsLoop::new();
    let window = WindowBuilder::new()
        .build(&events_loop)
        .unwrap();

    WebViewControlProcess::new()
        .create_web_view_control_async(
            window.get_hwnd() as usize as i64,
            Rect {
                X: 0.0,
                Y: 0.0,
                Width: 800.0,
                Height: 600.0,
            },
        )
        .expect("Creation call failed")
        .blocking_get()
        .expect("Creation async task failed")
        .expect("Creation produced None");
}

WebViewControlProcess 实例化有效,并且 CreateWebViewControlAsync host_window_handle (将其传递为0,或从实际值中减去一个。) HWND 价值观,它抱怨)。然而 IAsyncOperation AsyncStatus.Started blocking_get() 电话无限期挂起。

A full, runnable demonstration of the issue (with a bit more instrumentation) .

我觉得 WebViewControlProcess ProcessId ProcessExited 事件不会发生 被激发(我在实例化之后立即将一些东西附加到它上,在此之前是否有机会激发它?)。使命感 Terminate() E_FAIL .

我是否错过了一些使用的初始化 Windows.Web.UI.Interop ? 或者它不起作用还有其他原因吗?