winsafe 0.0.27

Windows API and GUI in safe, idiomatic Rust.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82

#![allow(non_camel_case_types, non_snake_case)]

use std::mem::ManuallyDrop;
use std::sync::atomic::AtomicU32;

use crate::co;
use crate::decl::*;
use crate::kernel::ffi_types::*;
use crate::mf::vts::*;
use crate::ole::{privs::*, vts::*};
use crate::prelude::*;

com_interface_userdef! { IMFAsyncCallback: IMFAsyncCallbackImpl, "a27003cf-2354-4f2a-8d6a-ab7cff15437e";
	/// [`IMFAsyncCallback`](https://learn.microsoft.com/en-us/windows/win32/api/mfobjects/nn-mfobjects-imfasynccallback)
	/// COM interface.
	///
	/// Automatically calls
	/// [`Release`](https://learn.microsoft.com/en-us/windows/win32/api/unknwn/nf-unknwn-iunknown-release)
	/// when the object goes out of scope.
}

impl IMFAsyncCallback {
	fn_com_userdef_event! { GetParameters: Fn(&mut co::MFASYNC, &mut u32) -> AnyResult<()>;
		/// [`IMFAsyncCallback::GetParameters`](https://learn.microsoft.com/en-us/windows/win32/api/mfobjects/nf-mfobjects-imfasynccallback-getparameters)
		/// method.
	}

	fn_com_userdef_event! { Invoke: Fn(&IMFAsyncResult) -> AnyResult<()>;
		/// [`IMFAsyncCallback::Invoke`](https://learn.microsoft.com/en-us/windows/win32/api/mfobjects/nf-mfobjects-imfasynccallback-invoke)
		/// method.
	}
}

#[repr(C)]
struct IMFAsyncCallbackImpl {
	vt: IMFAsyncCallbackVT,
	counter: AtomicU32,
	GetParameters: Option<Box<dyn Fn(&mut co::MFASYNC, &mut u32) -> AnyResult<()>>>,
	Invoke: Option<Box<dyn Fn(&IMFAsyncResult) -> AnyResult<()>>>,
}

impl IMFAsyncCallbackImpl {
	#[must_use]
	const fn new() -> Self {
		Self {
			vt: IMFAsyncCallbackVT {
				IUnknownVT: IUnknownVT {
					QueryInterface: Self::QueryInterface,
					AddRef: Self::AddRef,
					Release: Self::Release,
				},
				GetParameters: Self::GetParameters,
				Invoke: Self::Invoke,
			},
			counter: AtomicU32::new(1),
			GetParameters: None,
			Invoke: None,
		}
	}

	fn_com_userdef_iunknown_impls!(Self);

	fn GetParameters(p: COMPTR, pdwFlags: *mut u32, pdwQueue: *mut u32) -> HRES {
		let box_impl = box_impl_of::<Self>(p);
		hrresult_to_hres(match &box_impl.GetParameters {
			Some(func) => unsafe {
				anyresult_to_hresult(func(&mut *(pdwFlags as *mut co::MFASYNC), &mut *(pdwQueue)))
			},
			None => Ok(()),
		})
	}

	fn Invoke(p: COMPTR, pAsyncResult: COMPTR) -> HRES {
		let box_impl = box_impl_of::<Self>(p);
		hrresult_to_hres(match &box_impl.Invoke {
			Some(func) => anyresult_to_hresult(func(&ManuallyDrop::new(unsafe {
				IMFAsyncResult::from_ptr(pAsyncResult)
			}))),
			None => Ok(()),
		})
	}
}