Macro glib::g_warning

macro_rules! g_warning {
    ($log_domain:expr, $format:literal, $($arg:expr),* $(,)?) => { ... };
    ($log_domain:expr, $format:literal $(,)?) => { ... };
}

Macro used to log using GLib logging system. It uses g_log.

It is the same as calling the g_log! macro with LogLevel::Warning.

Example:

use glib::g_warning;

g_warning!("test", "test");
// Equivalent to:
use glib::{g_log, LogLevel};
g_log!("test", LogLevel::Warning, "test");

// trailing commas work as well:
g_warning!("test", "test",);

// You can also pass arguments like in format! or println!:
let x = 12;
g_warning!("test", "test: {}", x);
g_warning!("test", "test: {} {}", x, "a");
// trailing commas work as well:
g_warning!("test", "test: {} {}", x, "a",);