Remove AllowsTransparency which is buggy in XP and poor performance.

Wox/Helper/DWMDropShadow.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Drawing.Printing;
+using System.Runtime.InteropServices;
+using System.Windows;
+using System.Windows.Interop;
+
+namespace Wox.Helper
+{
+    public class DwmDropShadow
+    {
+
+        [DllImport("dwmapi.dll", PreserveSig = true)]
+        private static extern int DwmSetWindowAttribute(IntPtr hwnd, int attr, ref int attrValue, int attrSize);
+
+        [DllImport("dwmapi.dll")]
+        private static extern int DwmExtendFrameIntoClientArea(IntPtr hWnd, ref Margins pMarInset);
+
+        /// <summary>
+        /// Drops a standard shadow to a WPF Window, even if the window isborderless. Only works with DWM (Vista and Seven).
+        /// This method is much more efficient than setting AllowsTransparency to true and using the DropShadow effect,
+        /// as AllowsTransparency involves a huge permormance issue (hardware acceleration is turned off for all the window).
+        /// </summary>
+        /// <param name="window">Window to which the shadow will be applied</param>
+        public static void DropShadowToWindow(Window window)
+        {
+            if (!DropShadow(window))
+            {
+                window.SourceInitialized += new EventHandler(window_SourceInitialized);
+            }
+        }
+
+        private static void window_SourceInitialized(object sender, EventArgs e) //fixed typo
+        {
+            Window window = (Window)sender;
+
+            DropShadow(window);
+
+            window.SourceInitialized -= new EventHandler(window_SourceInitialized);
+        }
+
+        /// <summary>
+        /// The actual method that makes API calls to drop the shadow to the window
+        /// </summary>
+        /// <param name="window">Window to which the shadow will be applied</param>
+        /// <returns>True if the method succeeded, false if not</returns>
+        private static bool DropShadow(Window window)
+        {
+            try
+            {
+                WindowInteropHelper helper = new WindowInteropHelper(window);
+                int val = 2;
+                int ret1 = DwmSetWindowAttribute(helper.Handle, 2, ref val, 4);
+
+                if (ret1 == 0)
+                {
+                    Margins m = new Margins { Bottom = 0, Left = 0, Right = 0, Top = 0 };
+                    int ret2 = DwmExtendFrameIntoClientArea(helper.Handle, ref m);
+                    return ret2 == 0;
+                }
+                else
+                {
+                    return false;
+                }
+            }
+            catch (Exception ex)
+            {
+                // Probably dwmapi.dll not found (incompatible OS)
+                return false;
+            }
+        }
+
+    }
+}

Wox/MainWindow.xaml

@@ -9,8 +9,6 @@
         WindowStyle="None"
         WindowStartupLocation="Manual"
         ShowInTaskbar="False"
-        AllowsTransparency="True"
-        Background="{x:Null}"
         Style="{DynamicResource WindowStyle}"
         Icon="Images\app.png"
         >

Wox/MainWindow.xaml.cs

@@ -46,6 +46,7 @@ namespace Wox
             InitializeComponent();
             Initialized = true;
 
+
             AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException;
 
             progressBar.ToolTip = toolTip;
@@ -57,9 +58,9 @@ namespace Wox
             {
                 SetTheme(CommonStorage.Instance.UserSetting.Theme);
             }
-            catch (IOException)
+            catch (Exception)
             {
-                SetTheme(CommonStorage.Instance.UserSetting.Theme = "Default");
+                SetTheme(CommonStorage.Instance.UserSetting.Theme = "Dark");
             }
 
             SetHotkey(CommonStorage.Instance.UserSetting.Hotkey, OnHotkey);
@@ -75,6 +76,8 @@ namespace Wox
             Plugins.Init();
 
             InitProgressbarAnimation();
+            //only works for win7+
+            DwmDropShadow.DropShadowToWindow(this);
         }
 
         private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e)

Wox/Themes/Dark.xaml

@@ -9,8 +9,6 @@
     </Style>
     
     <Style x:Key="WindowBorderStyle" BasedOn="{StaticResource BaseWindowBorderStyle}" TargetType="{x:Type Border}">
-        <Setter Property="BorderThickness" Value="0" />
-        <Setter Property="CornerRadius" Value="5" />
     </Style>
     
     <Style x:Key="WindowStyle" BasedOn="{StaticResource BaseWindowStyle}" TargetType="{x:Type Window}">

Wox/Themes/Default.xaml

@@ -13,14 +13,14 @@
         <Setter Property="Stylus.IsFlicksEnabled" Value="False" />
     </Style>
     <Style x:Key="BaseWindowBorderStyle" TargetType="{x:Type Border}">
-        <Setter Property="CornerRadius" Value="10" />
+        <Setter Property="BorderThickness" Value="0" />
+        <Setter Property="CornerRadius" Value="0" />
         <Setter Property="Background" Value="#424242"></Setter>
         <Setter Property="Padding" Value="8 10 8 8" />
     </Style>
     <Style x:Key="BaseWindowStyle" TargetType="{x:Type Window}">
         <Setter Property="Height" Value="80" />
         <Setter Property="Width" Value="500" />
-        <Setter Property="Background" Value="#424242" />
     </Style>
 
     <Style x:Key="BasePendingLineStyle" TargetType="{x:Type Line}">

Wox/Themes/Light.xaml

@@ -10,13 +10,11 @@
         <Setter Property="Foreground" Value="#000000" />
     </Style>
     <Style x:Key="WindowBorderStyle" BasedOn="{StaticResource BaseWindowBorderStyle}" TargetType="{x:Type Border}">
-        <Setter Property="Background" Value="#FFFFFF"></Setter>
-        <Setter Property="CornerRadius" Value="8" />
         <Setter Property="BorderBrush" Value="#AAAAAA" />
-        <Setter Property="BorderThickness" Value="10" />
+        <Setter Property="BorderThickness" Value="5" />
+        <Setter Property="Background" Value="#ffffff"></Setter>
     </Style>
     <Style x:Key="WindowStyle" TargetType="{x:Type Window}" BasedOn="{StaticResource BaseWindowStyle}" >
-        <Setter Property="Width" Value="520"></Setter>
     </Style>
     <Style x:Key="PendingLineStyle" BasedOn="{StaticResource BasePendingLineStyle}" TargetType="{x:Type Line}" >
     </Style>

Wox/Themes/Pink.xaml

@@ -0,0 +1,30 @@
+<ResourceDictionary  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+    <ResourceDictionary.MergedDictionaries>
+        <ResourceDictionary Source="Default.xaml"></ResourceDictionary>
+    </ResourceDictionary.MergedDictionaries>
+    <Style x:Key="QueryBoxStyle" BasedOn="{StaticResource BaseQueryBoxStyle}" TargetType="{x:Type TextBox}">
+        <Setter Property="Background" Value="#1f1d1f"/>
+        <Setter Property="Foreground" Value="#cc1081" />
+    </Style>
+    <Style x:Key="WindowBorderStyle" BasedOn="{StaticResource BaseWindowBorderStyle}" TargetType="{x:Type Border}">
+        <Setter Property="Background" Value="#1f1d1f"></Setter>
+    </Style>
+    <Style x:Key="WindowStyle" TargetType="{x:Type Window}" BasedOn="{StaticResource BaseWindowStyle}" >
+    </Style>
+    <Style x:Key="PendingLineStyle" BasedOn="{StaticResource BasePendingLineStyle}" TargetType="{x:Type Line}" ></Style>
+    <Style x:Key="ItemTitleStyle" BasedOn="{StaticResource BaseItemTitleStyle}" TargetType="{x:Type TextBlock}" >
+        <Setter Property="Foreground" Value="#f5f5f5"></Setter>
+    </Style>
+    <Style x:Key="ItemSubTitleStyle" BasedOn="{StaticResource BaseItemSubTitleStyle}" TargetType="{x:Type TextBlock}" >
+        <Setter Property="Foreground"  Value="#c2c2c2"></Setter>
+    </Style>
+    <Style x:Key="ItemTitleSelectedStyle" BasedOn="{StaticResource BaseItemTitleSelectedStyle}" TargetType="{x:Type TextBlock}">
+        <Setter Property="Foreground" Value="#f5f5f5" />
+    </Style>
+    <Style x:Key="ItemSubTitleSelectedStyle" BasedOn="{StaticResource BaseItemSubTitleSelectedStyle}" TargetType="{x:Type TextBlock}">
+        <Setter Property="Foreground" Value="#c2c2c2" />
+    </Style>
+    <Color x:Key="ItemSelectedBackgroundColor">#cc1081</Color>
+    <Style x:Key="ThumbStyle" BasedOn="{StaticResource BaseThumbStyle}" TargetType="{x:Type Thumb}"></Style>
+    <Style x:Key="ScrollBarStyle" BasedOn="{StaticResource BaseScrollBarStyle}" TargetType="{x:Type ScrollBar}"></Style>
+</ResourceDictionary>

Wox/Wox.csproj

@@ -129,6 +129,7 @@
       <DependentUpon>CustomPluginHotkeySetting.xaml</DependentUpon>
     </Compile>
     <Compile Include="DispatcherExtensions.cs" />
+    <Compile Include="Helper\DWMDropShadow.cs" />
     <Compile Include="Helper\Log.cs" />
     <Compile Include="Helper\PluginInstaller.cs" />
     <Compile Include="Helper\WoxException.cs" />
@@ -200,6 +201,10 @@
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>
     </Page>
+    <Page Include="Themes\Pink.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
     <Page Include="WebSearchSetting.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>