Can't use implement macro for Application

[ZoeyR]

Problem

I am trying to use the implement macro to implement a subclass of Microsoft::UI::Xaml::Application. It produces a build error

error[E0599]: no function or associated item named `new` found for struct `windows_app::Microsoft::UI::Xaml::IApplication_Vtbl` in the current scope
error[E0599]: no function or associated item named `matches` found for struct `windows_app::Microsoft::UI::Xaml::IApplication_Vtbl` in the current scope

[kennykerr]

I think this is dependent on #37, which ran into a few snags. @riverar

[riverar]

Sorry to keep you waiting, missed this issue.

Earlier versions of the windows-app crate didn't emit the implement feature (or bring in the upstream windows implement feature). #37 does but I'll pull that out and merge it separately today. Standby.

[riverar]

@ZoeyR Give that a spin. Let me know if you run into any other issues. There's a new sample too that may be helpful.

windows-app-rs/crates/samples/xamlapp/src/main.rs

Lines 38 to 56 in 8bb7a82

	#[implement(IApplicationOverrides)]
	struct App {
	_window: RefCell<Option<Window>>,
	}
	#[allow(non_snake_case)]
	impl App {
	fn new() -> windows::core::Result<App> {
	let app = App {
	_window: RefCell::new(None),
	};
	Ok(app)
	}
	}
	impl IApplicationOverrides_Impl for App {
	fn OnLaunched(&self, _: &Option<LaunchActivatedEventArgs>) -> windows::core::Result<()> {
	let window = Window::new()?;
	window.SetTitle("WinUI 3 Desktop, Unpackaged (Rust)")?;