4d7ca2a448
Update the `windows` Microsoft Windows binding crate to 0.58.
- Update `taskcluster/kinds/fetch/toolchains.yml` to request version
0.58 of the `windows` crate.
- Update `build/rust/windows/Cargo.toml` to present itself as 0.58.
- Vendor the following new crates into `third_party/rust`:
- windows-core
- windows-implement
- windows-interface
- windows-result
- windows-strings
- Update `supply-chain/imports.lock` as necessary.
Differential Revision: https://phabricator.services.mozilla.com/D218694
958 B
958 B
Windows error handling
The windows-result crate provides efficient Windows error handling and propagation with support for Win32, COM, and WinRT APIs.
Start by adding the following to your Cargo.toml file:
[dependencies.windows-result]
version = "0.2"
Use the HRESULT, Error, and specialized Result types as needed:
use windows_result::*;
const S_OK: HRESULT = HRESULT(0);
const ERROR_CANCELLED: u32 = 1223;
const E_CANCELLED: HRESULT = HRESULT::from_win32(ERROR_CANCELLED);
fn main() -> Result<()> {
S_OK.ok()?;
let e = Error::new(E_CANCELLED, "test message");
assert_eq!(e.code(), E_CANCELLED);
assert_eq!(e.message(), "test message");
Ok(())
}