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SDL_AppEvent_func

sdl3_sys::init

Type Alias SDL_AppEvent_func 

Source 
pub type SDL_AppEvent_func = Option<unsafe extern "C" fn(appstate: *mut c_void, event: *mut SDL_Event) -> SDL_AppResult>;
Expand description

Function pointer typedef for SDL_AppEvent.

These are used by SDL_EnterAppMainCallbacks. This mechanism operates behind the scenes for apps using the optional main callbacks. Apps that want to use this should just implement SDL_AppEvent directly.

§Parameters

  • appstate: an optional pointer, provided by the app in SDL_AppInit.
  • event: the new event for the app to examine.

§Return value

Returns SDL_APP_FAILURE to terminate with an error, SDL_APP_SUCCESS to terminate with success, SDL_APP_CONTINUE to continue.

§Availability

This datatype is available since SDL 3.2.0.

Aliased Type§

pub enum SDL_AppEvent_func {
    None,
    Some(unsafe extern "C" fn(*mut c_void, *mut SDL_Event) -> SDL_AppResult),
}

Variants§

§1.0.0

None

No value.

§1.0.0

Some(unsafe extern "C" fn(*mut c_void, *mut SDL_Event) -> SDL_AppResult)

Some value of type T.