optimized performance

src/Shared/HandyControl_Shared/Controls/Time/CalendarWithClock.cs

@@ -87,7 +87,7 @@ namespace HandyControl.Controls
         public bool ShowConfirmButton
         {
             get => (bool)GetValue(ShowConfirmButtonProperty);
-            set => SetValue(ShowConfirmButtonProperty, value);
+            set => SetValue(ShowConfirmButtonProperty, ValueBoxes.BooleanBox(value));
         }
 
         public static readonly DependencyProperty SelectedDateTimeProperty = DependencyProperty.Register(

src/Shared/HandyControl_Shared/Controls/Time/Clock/ClockBase.cs

@@ -82,7 +82,7 @@ namespace HandyControl.Controls
         internal bool ShowConfirmButton
         {
             get => (bool) GetValue(ShowConfirmButtonProperty);
-            set => SetValue(ShowConfirmButtonProperty, value);
+            set => SetValue(ShowConfirmButtonProperty, ValueBoxes.BooleanBox(value));
         }
 
         protected virtual void OnSelectedTimeChanged(FunctionEventArgs<DateTime?> e) => RaiseEvent(e);

src/Shared/HandyControl_Shared/Controls/Time/TimeBar/TimeBar.cs

@@ -216,7 +216,7 @@ namespace HandyControl.Controls
         public bool ShowSpeStr
         {
             get => (bool)GetValue(ShowSpeStrProperty);
-            set => SetValue(ShowSpeStrProperty, value);
+            set => SetValue(ShowSpeStrProperty, ValueBoxes.BooleanBox(value));
         }
 
         /// <summary>