diff --git a/minisqlquery-master/src/MiniSqlQuery.Core/Commands/CloseAllWindowsCommand.cs b/minisqlquery-master/src/MiniSqlQuery.Core/Commands/CloseAllWindowsCommand.cs
new file mode 100644
index 0000000..cbfa429
--- /dev/null
+++ b/minisqlquery-master/src/MiniSqlQuery.Core/Commands/CloseAllWindowsCommand.cs
@@ -0,0 +1,48 @@
+#region License
+
+// Copyright 2005-2019 Paul Kohler (https://github.com/paulkohler/minisqlquery). All rights reserved.
+// This source code is made available under the terms of the GNU Lesser General Public License v3.0
+// https://github.com/paulkohler/minisqlquery/blob/master/LICENSE
+#endregion
+
+using System.Windows.Forms;
+
+namespace MiniSqlQuery.Core.Commands
+{
+ /// <summary>
+ /// The close all windows command.
+ /// </summary>
+ public class CloseAllWindowsCommand
+ : CommandBase
+ {
+ /// <summary>
+ /// Initializes a new instance of the <see cref = "CloseAllWindowsCommand" /> class.
+ /// </summary>
+ public CloseAllWindowsCommand()
+ : base("Close &All Windows")
+ {
+ }
+
+ /// <summary>
+ /// Gets a value indicating whether Enabled.
+ /// </summary>
+ /// <value>The enabled state.</value>
+ public override bool Enabled
+ {
+ get { return HostWindow.ActiveChildForm != null; }
+ }
+
+ /// <summary>
+ /// Execute the command.
+ /// </summary>
+ public override void Execute()
+ {
+ var forms = HostWindow.Instance.MdiChildren;
+ foreach (var frm in forms)
+ {
+ Application.DoEvents();
+ frm.Close();
+ }
+ }
+ }
+}
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