diff --git a/STranslate/MainWindow.xaml b/STranslate/MainWindow.xaml
index a55dd5c..0830d48 100644
--- a/STranslate/MainWindow.xaml
+++ b/STranslate/MainWindow.xaml
@@ -14,7 +14,6 @@
         AllowsTransparency="True"
         ShowInTaskbar="False"
         ResizeMode="NoResize"
-        KeyDown="Window_KeyDown"
         Topmost="True"
         Deactivated="Window_Deactivated"
         WindowStyle="None"
@@ -38,6 +37,17 @@
         </ContextMenu>
     </Window.Resources>
 
+    <Window.InputBindings>
+        <KeyBinding Modifiers="Ctrl+Shift"
+                    Key="Q"
+                    Command="{Binding ExitCmd}"/>
+        <KeyBinding Modifiers="Ctrl+Shift"
+                    Key="T"
+                    Command="{Binding TopmostCmd}"/>
+        <KeyBinding Key="Esc"
+                    Command="{Binding EscCmd}"/>
+    </Window.InputBindings>
+
     <Border Style="{DynamicResource BorderMainStyle}">
         <Grid>
             <Grid.RowDefinitions>
@@ -58,8 +68,8 @@
             <!--header-->
             <Grid x:Name="Header">
                 <Button x:Name="TopmostBtn"
-                        Template="{DynamicResource ButtonTemplateUnTopmost}"
-                        Click="Top_Click"/>
+                        Command="{Binding TopmostCmd}"
+                        Template="{DynamicResource ButtonTemplateUnTopmost}"/>
                 <Button Width="auto"
                         Template="{DynamicResource ButtonTemplateTheme}"
                         HorizontalAlignment="Right"
@@ -78,6 +88,7 @@
             <!--input-->
             <Grid x:Name="Input"
                   Grid.Row="1"
+                  FocusManager.FocusedElement="{Binding ElementName=TextBoxInput}"
                   Margin="10,0,10,0">
                 <!--输入框-->
                 <Border x:Name="BorderInput"
diff --git a/STranslate/MainWindow.xaml.cs b/STranslate/MainWindow.xaml.cs
index 8fe83d5..d821fb3 100644
--- a/STranslate/MainWindow.xaml.cs
+++ b/STranslate/MainWindow.xaml.cs
@@ -27,53 +27,6 @@ namespace STranslate
             //}
         }
 
-
-        /// <summary>
-        /// 移动
-        /// </summary>
-        /// <param name="sender"></param>
-        /// <param name="e"></param>
-        private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
-        {
-            DragMove();
-        }
-
-        /// <summary>
-        /// 软件运行时快捷键
-        /// </summary>
-        /// <param name="sender"></param>
-        /// <param name="e"></param>
-        private void Window_KeyDown(object sender, KeyEventArgs e)
-        {
-            //最小化 Esc
-            if (e.Key == Key.Escape)
-            {
-                this.Hide();
-
-                //取消置顶
-                if (_IsTopmost)
-                {
-                    TopmostBtn.SetResourceReference(TemplateProperty, _UnTopmostTemplateName);
-                    _IsTopmost = !_IsTopmost;
-                }
-            }
-            //置顶 Ctrl+Shift+T
-            if (e.KeyboardDevice.Modifiers.HasFlag(ModifierKeys.Control)
-                && e.KeyboardDevice.Modifiers.HasFlag(ModifierKeys.Shift)
-                && e.Key == Key.T)
-            {
-                Top_Click(null, null);
-            }
-            //退出 Ctrl+Shift+Q
-            if (e.KeyboardDevice.Modifiers.HasFlag(ModifierKeys.Control)
-                && e.KeyboardDevice.Modifiers.HasFlag(ModifierKeys.Shift)
-                && e.Key == Key.Q)
-            {
-                vm.ExitApp();
-            }
-
-        }
-
         /// <summary>
         /// 监听全局快捷键
         /// </summary>
@@ -103,40 +56,30 @@ namespace STranslate
             });
         }
 
+
         /// <summary>
-        /// 非激活窗口则隐藏起来
+        /// 移动
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
-        private void Window_Deactivated(object sender, EventArgs e)
+        private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
         {
-            if (!_IsTopmost)
-            {
-                vm.Speech.SpeakAsyncCancelAll();
-                this.Hide();
-            }
+            DragMove();
         }
 
         /// <summary>
-        /// 是否置顶(不好拆)
+        /// 非激活窗口则隐藏起来
         /// </summary>
         /// <param name="sender"></param>
         /// <param name="e"></param>
-        private void Top_Click(object sender, RoutedEventArgs e)
+        private void Window_Deactivated(object sender, EventArgs e)
         {
-            if (_IsTopmost)
-            {
-                TopmostBtn.SetResourceReference(TemplateProperty, _UnTopmostTemplateName);
-            }
-            else
+            if (!vm.IsTopmost)
             {
-                TopmostBtn.SetResourceReference(TemplateProperty, _TopmostTemplateName);
+                vm.Speech.SpeakAsyncCancelAll();
+                this.Hide();
             }
-            _IsTopmost = !_IsTopmost;
         }
-        private bool _IsTopmost { get; set; }
-        private readonly string _TopmostTemplateName = "ButtonTemplateTopmost";
-        private readonly string _UnTopmostTemplateName = "ButtonTemplateUnTopmost";
 
         private void SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
         {
diff --git a/STranslate/ViewModel/MainVM.cs b/STranslate/ViewModel/MainVM.cs
index a1ab457..e0ba273 100644
--- a/STranslate/ViewModel/MainVM.cs
+++ b/STranslate/ViewModel/MainVM.cs
@@ -62,6 +62,36 @@ namespace STranslate.ViewModel
                 ExitApp();
             });
 
+            //置顶
+            TopmostCmd = new RelayCommand((_) => true, (_) =>
+            {
+                if (IsTopmost)
+                {
+                    (_Mainwin.FindName("TopmostBtn") as System.Windows.Controls.Button)
+                    .SetResourceReference(System.Windows.Controls.Control.TemplateProperty, _UnTopmostTemplateName);
+                }
+                else
+                {
+                    (_Mainwin.FindName("TopmostBtn") as System.Windows.Controls.Button)
+                    .SetResourceReference(System.Windows.Controls.Control.TemplateProperty, _TopmostTemplateName);
+                }
+                IsTopmost = !IsTopmost;
+            });
+
+            //ESC
+            EscCmd = new RelayCommand((_) => true, (_) =>
+            {
+                _Mainwin.Hide();
+
+                //取消置顶
+                if (IsTopmost)
+                {
+                    (_Mainwin.FindName("TopmostBtn") as System.Windows.Controls.Button)
+                    .SetResourceReference(System.Windows.Controls.Control.TemplateProperty, _UnTopmostTemplateName);
+                    IsTopmost = !IsTopmost;
+                }
+            });
+
             #endregion
 
             #region Common
@@ -141,7 +171,7 @@ namespace STranslate.ViewModel
         {
             _Mainwin.Show();
             _Mainwin.Activate();
-            //TODO: add textbox focus
+            (_Mainwin.FindName("TextBoxInput") as System.Windows.Controls.TextBox).Focus();
         }
         public void InputTranslate()
         {
@@ -153,8 +183,8 @@ namespace STranslate.ViewModel
             ClearAll();
             var sentence = GetWordsHelper.Get();
             OpenMainWin();
-            //TODO: add textbox focus
-            //this.TextBoxInput.Text = sentence.Trim();
+            (_Mainwin.FindName("TextBoxInput") as System.Windows.Controls.TextBox)
+                .Text = sentence.Trim();
             _ = Translate();
         }
         public void ExitApp()
@@ -344,6 +374,8 @@ namespace STranslate.ViewModel
         public ICommand ShowMainWinCmd { get; private set; }
         public ICommand StartupCmd { get; private set; }
         public ICommand ExitCmd { get; private set; }
+        public ICommand TopmostCmd { get; private set; }
+        public ICommand EscCmd { get; private set; }
 
         /// <summary>
         /// 是否开机自启
@@ -354,6 +386,9 @@ namespace STranslate.ViewModel
         public bool IsVisibility { get => _IsVisibility; set => UpdateProperty(ref _IsVisibility, value); }
 
         private MainWindow _Mainwin;
+        public bool IsTopmost { get; set; }
+        private readonly string _TopmostTemplateName = "ButtonTemplateTopmost";
+        private readonly string _UnTopmostTemplateName = "ButtonTemplateUnTopmost";
 
         /// <summary>
         /// 全局配置文件