Enum HookError 

pub enum HookError {
    Unsupported,
    AccessibilityDenied,
    MacOsTap(String),
    NoDeviceFound,
    Linux(Error),
    WindowsHook(String),
}

Errors that Hook::start and related functions can produce.

The same shape on every target: a platform-conditional enum would compile on the maintainer’s macOS and break an exhaustive match on Linux, and one unreachable variant costs nothing.

Variants

Unsupported

This platform has no hook implementation (neither macOS, Linux, nor Windows).

AccessibilityDenied

macOS Accessibility permission has not been granted to this process.

MacOsTap(String)

CGEventTapCreate returned null, or the run loop source could not be created. The inner string carries the context.

NoDeviceFound

No mouse device was found under /dev/input. Either no pointing device is connected, or the process lacks read permission on the device nodes (add the user to the input group, or add a udev rule).

Linux(Error)

A Linux-specific I/O error occurred while setting up or running the hook.

WindowsHook(String)

SetWindowsHookExW failed, or the hook thread could not be started.

Trait Implementations

impl Debug for HookError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for HookError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for HookError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.