(GH-3453) Fix for: How to disable System Menu On Left Click at the Ic…

…on of a MetroWindow Add new property ShowSystemMenu: Gets or sets a value that indicates whether the system menu should popup with left mouse click on the window icon.
MahApps · Apr 9, 2019 · e395b8d · e395b8d
1 parent a1c0938
commit e395b8d
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Showing 2 changed files with 19 additions and 2 deletions.
diff --git a/src/MahApps.Metro.Samples/MahApps.Metro.Demo/MainWindow.xaml b/src/MahApps.Metro.Samples/MahApps.Metro.Demo/MainWindow.xaml
@@ -227,6 +227,13 @@
                           Header="Window icon: no scale, smaller frame"
                           IsCheckable="True"
                           IsChecked="{Binding IsNoScaleSmallerFrame, Mode=OneWay}" />
+                <Separator />
+                <MenuItem Header="ShowSystemMenu"
+                          IsCheckable="True"
+                          IsChecked="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Controls:MetroWindow}}, Path=ShowSystemMenu}" />
+                <MenuItem Header="ShowSystemMenuOnRightClick"
+                          IsCheckable="True"
+                          IsChecked="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Controls:MetroWindow}}, Path=ShowSystemMenuOnRightClick}" />
             </MenuItem>
         </Menu>
 

diff --git a/src/MahApps.Metro/Controls/MetroWindow.cs b/src/MahApps.Metro/Controls/MetroWindow.cs
@@ -84,6 +84,7 @@ public class MetroWindow : Window
         /// </summary>
         public static readonly DependencyProperty IsCloseButtonEnabledWithDialogProperty = IsCloseButtonEnabledWithDialogPropertyKey.DependencyProperty;
 
+        public static readonly DependencyProperty ShowSystemMenuProperty = DependencyProperty.Register("ShowSystemMenu", typeof(bool), typeof(MetroWindow), new PropertyMetadata(true));
         public static readonly DependencyProperty ShowSystemMenuOnRightClickProperty = DependencyProperty.Register("ShowSystemMenuOnRightClick", typeof(bool), typeof(MetroWindow), new PropertyMetadata(true));
 
         public static readonly DependencyProperty TitleBarHeightProperty = DependencyProperty.Register("TitleBarHeight", typeof(int), typeof(MetroWindow), new PropertyMetadata(30, TitleBarHeightPropertyChangedCallback));
@@ -549,7 +550,16 @@ public bool IsCloseButtonEnabledWithDialog
         }
 
         /// <summary>
-        /// Gets/sets if the the system menu should popup on right click.
+        /// Gets or sets a value that indicates whether the system menu should popup with left mouse click on the window icon.
+        /// </summary>
+        public bool ShowSystemMenu
+        {
+            get { return (bool)GetValue(ShowSystemMenuProperty); }
+            set { SetValue(ShowSystemMenuProperty, value); }
+        }
+
+        /// <summary>
+        /// Gets or sets a value that indicates whether the system menu should popup with right mouse click if the mouse position is on title bar or on the entire window if it has no title bar (and no title bar height).
         /// </summary>
         public bool ShowSystemMenuOnRightClick
         {
@@ -1307,7 +1317,7 @@ private void IconMouseDown(object sender, MouseButtonEventArgs e)
                 {
                     Close();
                 }
-                else
+                else if (this.ShowSystemMenu)
                 {
                     ShowSystemMenuPhysicalCoordinates(this, PointToScreen(new Point(0, TitleBarHeight)));
                 }