40 lines
1.2 KiB
C#
40 lines
1.2 KiB
C#
/*
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* Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System;
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using System.Runtime.InteropServices;
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using System.Windows;
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using System.Windows.Interop;
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namespace SafeExamBrowser.UserInterface.Shared.Utilities
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{
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public static class WindowExtensions
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{
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private const uint MF_BYCOMMAND = 0x00000000;
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private const uint MF_GRAYED = 0x00000001;
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private const uint MF_ENABLED = 0x00000000;
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private const uint SC_CLOSE = 0xF060;
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public static void DisableCloseButton(this Window window)
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{
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var helper = new WindowInteropHelper(window);
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var systemMenu = GetSystemMenu(helper.Handle, false);
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if (systemMenu != IntPtr.Zero)
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{
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EnableMenuItem(systemMenu, SC_CLOSE, MF_BYCOMMAND | MF_GRAYED);
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}
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}
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[DllImport("user32.dll")]
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private static extern IntPtr GetSystemMenu(IntPtr hWnd, bool bRevert);
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[DllImport("user32.dll")]
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private static extern bool EnableMenuItem(IntPtr hMenu, uint uIDEnableItem, uint uEnable);
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}
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}
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