Upgrade to gtk 0.18

Cargo.toml

@@ -40,9 +40,9 @@ features = [
 ]
 
 [target."cfg(target_os = \"linux\")".dependencies]
-gtk = "0.16"
-gdk = "0.16"
-gdk-pixbuf = "0.16"
+gtk = "0.18"
+gdk = "0.18"
+gdk-pixbuf = "0.18"
 libxdo = { version = "0.6.0", optional = true }
 
 [target."cfg(target_os = \"macos\")".dependencies]
@@ -52,6 +52,6 @@ png = "0.17"
 
 [dev-dependencies]
 winit = "0.28"
-tao = "0.22"
-wry = "0.33"
+tao = "0.23"
+wry = { git = "https://github.com/dklassic/wry.git", branch = "gtk018" }
 image = "0.24"

src/platform_impl/gtk/mod.rs

@@ -15,7 +15,7 @@ use crate::{
     IsMenuItem, MenuEvent, MenuId, MenuItemKind, MenuItemType, Position,
 };
 use accelerator::{from_gtk_mnemonic, parse_accelerator, to_gtk_mnemonic};
-use gtk::{prelude::*, Container, Orientation};
+use gtk::{prelude::*, AboutDialog, Container, Orientation};
 use std::{
     cell::RefCell,
     collections::HashMap,
@@ -1138,9 +1138,7 @@ impl MenuChild {
                 register_accel(&item);
                 item.connect_activate(move |_| {
                     if let Some(metadata) = &metadata {
-                        let mut builder = gtk::builders::AboutDialogBuilder::new()
-                            .modal(true)
-                            .resizable(false);
+                        let mut builder = AboutDialog::builder().modal(true).resizable(false);
 
                         if let Some(name) = &metadata.name {
                             builder = builder.program_name(name);