Struct EventHandle 

pub struct EventHandle<T: ?Sized> { /* private fields */ }

Handle returned when registering callbacks.

Automatically unregisters the callback when dropped, implementing RAII cleanup pattern to prevent memory leaks.

Examples

use telegram_webapp_sdk::TelegramWebApp;

if let Some(app) = TelegramWebApp::instance() {
    // Handle is automatically cleaned up when scope ends
    let handle = app
        .on_theme_changed(|| {
            println!("Theme changed!");
        })
        .expect("subscribe");

    // No manual cleanup needed - Drop handles it
} // <- handle dropped here, callback unregistered automatically

Trait Implementations

impl<T: ?Sized> Drop for EventHandle<T>

fn drop(&mut self)

Automatically unregisters the event callback when the handle is dropped.

This implements the RAII pattern, ensuring that event handlers are properly cleaned up even if the user forgets to manually unregister. Errors during unregistration are logged but do not panic.