🩹 修复关闭后仍有后台窗口, 优化主窗口动画

Converts/ReverseBoolConvert.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace GeekDesk.Converts
+{
+    internal class ReverseBoolConvert : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null) return null;
+            bool val = (bool)value;
+            return !val;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}