Minor improvements to the hide and show effect

MelonVPNClient/MainWindow.cs

@@ -301,25 +301,13 @@ public partial class MainWindow : Window
     {
         IsHidden = false;
 
-        Visible = true;
+        // Present triggers `Visible = true;`
+        // it is then called again once the window is visible
+        // so it triggers `Deiconify();`
+        Present();
         SkipPagerHint = false;
         SkipTaskbarHint = false;
 
-        // Just wait before triggering these to get
-        // the right effect
-        Thread thread = new Thread(() =>
-        { 
-            Thread.Sleep(100);
-            // Deiconify and Present seem to do the same
-            // thing but sometimes Deiconify doesn't work
-            Deiconify();
-            Present();
-        })
-        {
-            IsBackground = true
-        };
-        thread.Start();
-
         UpdateTrayMenu();
     }
 
@@ -382,8 +370,19 @@ public partial class MainWindow : Window
         }
     }
 
-    void OnRefreshClicked(object sender, EventArgs e)
+    void OnRefreshClicked(object sender, EventArgs e) => Refresh();
+
+    protected void OnVisibilityNotifyEvent(object o, VisibilityNotifyEventArgs args)
     {
-        Refresh();
+        // Calling present again forces the window to `Deiconify();`
+        Thread thread = new Thread(() =>
+        {
+            Thread.Sleep(100);
+            Present();
+        })
+        {
+            IsBackground = true
+        };
+        thread.Start();
     }
 }

MelonVPNClient/gtk-gui/MainWindow.cs

@@ -25,5 +25,6 @@ public partial class MainWindow
 		this.DefaultHeight = 86;
 		this.Show();
 		this.DeleteEvent += new global::Gtk.DeleteEventHandler(this.OnDeleteEvent);
+		this.VisibilityNotifyEvent += new global::Gtk.VisibilityNotifyEventHandler(this.OnVisibilityNotifyEvent);
 	}
 }

MelonVPNClient/gtk-gui/gui.stetic

@@ -13,6 +13,7 @@
     <property name="Title" translatable="yes">MainWindow</property>
     <property name="WindowPosition">CenterOnParent</property>
     <signal name="DeleteEvent" handler="OnDeleteEvent" />
+    <signal name="VisibilityNotifyEvent" handler="OnVisibilityNotifyEvent" />
     <child>
       <widget class="Gtk.Fixed" id="fixed1">
         <property name="MemberName" />