Crate get_last_error

get-last-error

An error wrapper over Win32 API errors.

Examples

A Win32Error can be constructed from an arbitrary DWORD:

use get_last_error::Win32Error;

let err = Win32Error::new(0);
println!("{}", err); // prints "The operation completed successfully."

The Win32Error::get_last_error retrieves the last error code for the current thread:

use get_last_error::Win32Error;
use winapi::um::{winnt::HANDLE, processthreadsapi::OpenProcess};

fn open_process() -> Result<HANDLE, Win32Error> {
    let result = unsafe { OpenProcess(0, 0, 0) }; // some windows api call
    if result.is_null() { // null indicates failure.
        Err(Win32Error::get_last_error())
    } else {
        Ok(result)
    }
}

Structs

TryFromIoError

Error when converting a io::Error to a Win32Error when no raw os error code is available.

Win32Error

A wrapper over Win32 API errors. Implements Display using FormatMessageW.