No longer need to work around a Splat bug.

Perspex.Base/PerspexObject.cs

@@ -457,12 +457,12 @@ namespace Perspex
                 this.values.Add(property, v);
             }
             
-            this.Log().Debug(string.Format(
+            this.Log().Debug(
                 "Set local value of {0}.{1} (#{2:x8}) to {3}",
                 this.GetType().Name,
                 property.Name,
                 this.GetHashCode(),
-                value));
+                value);
 
             v.Replace(Observable.Never<object>().StartWith(value), Priority);
         }
@@ -506,12 +506,12 @@ namespace Perspex
                 this.values.Add(property, v);
             }
 
-            this.Log().Debug(string.Format(
+            this.Log().Debug(
                 "Bound value of {0}.{1} (#{2:x8}) to {3}",
                 this.GetType().Name,
                 property.Name,
                 this.GetHashCode(),
-                description != null ? description.Description : "[Anonymous]"));
+                description != null ? description.Description : "[Anonymous]");
 
             if (priority == BindingPriority.LocalValue)
             {
@@ -582,13 +582,13 @@ namespace Perspex
                 {
                     this.RaisePropertyChanged(property, oldValue, newValue);
 
-                    this.Log().Debug(string.Format(
+                    this.Log().Debug(
                         "Value of {0}.{1} (#{2:x8}) changed from {3} to {4}",
                         this.GetType().Name,
                         property.Name,
                         this.GetHashCode(),
                         oldValue,
-                        newValue));
+                        newValue);
                 }
             });
 

Perspex.Controls/TemplatedControl.cs

@@ -60,10 +60,10 @@ namespace Perspex.Controls
         {
             if (this.Template != null)
             {
-                this.Log().Debug(string.Format(
+                this.Log().Debug(
                     "Creating template for {0} (#{1:x8})",
                     this.GetType().Name,
-                    this.GetHashCode()));
+                    this.GetHashCode());
 
                 var child = this.Template.Build(this);
                 this.AddVisualChild(child);

Perspex.Layout/Layoutable.cs

@@ -125,20 +125,20 @@ namespace Perspex.Layout
             availableSize = availableSize.Deflate(this.Margin);
             this.DesiredSize = this.MeasureCore(availableSize).Constrain(availableSize);
 
-            this.Log().Debug(string.Format(
+            this.Log().Debug(
                 "Measure of {0} (#{1:x8}) requested {2} ",
                 this.GetType().Name,
                 this.GetHashCode(),
-                this.DesiredSize));
+                this.DesiredSize);
         }
 
         public void Arrange(Rect rect)
         {
-            this.Log().Debug(string.Format(
+            this.Log().Debug(
                 "Arrange of {0} (#{1:x8}) gave {2} ",
                 this.GetType().Name,
                 this.GetHashCode(),
-                rect));
+                rect);
 
             if (this.DesiredSize.HasValue)
             {

Perspex.SceneGraph/Visual.cs

@@ -248,10 +248,10 @@ namespace Perspex
 
         private void NotifyAttachedToVisualTree(IRenderRoot root)
         {
-            this.Log().Debug(string.Format(
+            this.Log().Debug(
                 "Attached {0} (#{1:x8}) to visual tree",
                 this.GetType().Name,
-                this.GetHashCode()));
+                this.GetHashCode());
 
             this.OnAttachedToVisualTree(root);
 
@@ -266,10 +266,10 @@ namespace Perspex
 
         private void NotifyDetachedFromVisualTree(IRenderRoot oldRoot)
         {
-            this.Log().Debug(string.Format(
+            this.Log().Debug(
                 "Detached {0} (#{1:x8}) from visual tree",
                 this.GetType().Name,
-                this.GetHashCode()));
+                this.GetHashCode());
 
             this.OnDetachedFromVisualTree(oldRoot);
 

TestApplication/Program.cs

@@ -1,5 +1,6 @@
 using Perspex;
 using Perspex.Controls;
+using Perspex.Diagnostics;
 using Perspex.Layout;
 using Perspex.Media;
 using Perspex.Media.Imaging;
@@ -82,8 +83,8 @@ namespace TestApplication
 
         static void Main(string[] args)
         {
-            //LogManager.Enable(new TestLogger());
+            LogManager.Enable(new TestLogger());
-            //LogManager.Instance.LogLayoutMessages = true;
+            LogManager.Instance.LogLayoutMessages = true;
 
             App application = new App
             {