mirror of
https://github.com/xcp-ng/xenadmin.git
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615 lines
21 KiB
C#
615 lines
21 KiB
C#
/* Copyright (c) Citrix Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Security;
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using System.Text;
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using System.Windows.Forms;
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namespace XenAdmin.Core
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{
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/// <summary>
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/// Encapsulates window functions that aren't in the framework.
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/// </summary>
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internal class Win32Window : IWin32Window
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{
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private readonly IntPtr _handle;
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/// <summary>
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/// Initializes a new instance of the <see cref="Win32Window"/> class.
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/// </summary>
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/// <param name="handle">The window handle.</param>
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public Win32Window(IntPtr handle)
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{
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_handle = handle;
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}
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/// <summary>
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/// Extract the window handle
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/// </summary>
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public IntPtr Handle
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{
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get
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{
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return _handle;
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}
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}
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/// <summary>
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/// Posts WM_CLOSE.
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/// </summary>
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public void Close()
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{
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const int WM_CLOSE = 0x10;
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PostMessage(WM_CLOSE, 0, 0);
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}
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/// <summary>
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/// Return true if this window is null
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/// </summary>
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public bool IsNull
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{
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get
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{
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return _handle == IntPtr.Zero;
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}
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}
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/// <summary>
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/// The children of this window
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/// </summary>
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public ReadOnlyCollection<Win32Window> Children
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{
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get
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{
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List<Win32Window> windows = new List<Win32Window>();
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EnumChildWindows(_handle, delegate(IntPtr window, int i)
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{
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windows.Add(new Win32Window(window));
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return true;
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}, 0);
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return new ReadOnlyCollection<Win32Window>(windows);
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}
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}
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public ReadOnlyCollection<Win32Window> DirectChildren
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{
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get
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{
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List<Win32Window> windows = new List<Win32Window>();
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foreach (Win32Window w in Children)
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{
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if (w.Parent._handle.ToInt32() == _handle.ToInt32())
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{
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windows.Add(w);
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}
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}
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return new ReadOnlyCollection<Win32Window>(windows);
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}
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}
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/// <summary>
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/// Gets the first window that has the specified window text.
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/// </summary>
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/// <param name="text">The text that the window must have.</param>
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/// <returns>The first window that has the specified window text.</returns>
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public static Win32Window GetWindowWithText(string text)
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{
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return GetWindowWithText(text, w => true);
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}
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/// <summary>
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/// Gets the first window that has the specified window text and matches the specified Predicate.
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/// </summary>
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/// <param name="text">The text that the window must have.</param>
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/// <param name="match">The Predicate that the window must match.</param>
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/// <returns>The first window that has the specified window text and matches the specified Predicate.</returns>
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public static Win32Window GetWindowWithText(string text, Predicate<Win32Window> match)
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{
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Util.ThrowIfParameterNull(match, "match");
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foreach (Win32Window window in TopLevelWindows)
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{
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if (window.Text == text && match(window))
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{
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return window;
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}
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}
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return null;
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}
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/// <summary>
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/// Gets a value indicating whether a form of the specified type is currently visible in this process.
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/// </summary>
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public static bool ModalDialogIsVisible()
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{
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int currentProcess = Process.GetCurrentProcess().Id;
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IntPtr mainWindowHandle = Process.GetCurrentProcess().MainWindowHandle;
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bool output = false;
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EnumWindows(delegate(IntPtr handle, int i)
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{
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Win32Window w = new Win32Window(handle);
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if (w.ProcessId == currentProcess)
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{
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Form f = Form.FromHandle(w.Handle) as Form;
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if (f != null && w.Handle != mainWindowHandle && f.GetType().Namespace.StartsWith("XenAdmin"))
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{
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output = true;
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return false;
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}
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}
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return true;
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}, 0);
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return output;
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}
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/// <summary>
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/// All top level windows
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/// </summary>
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public static ReadOnlyCollection<Win32Window> TopLevelWindows
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{
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get
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{
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List<Win32Window> windows = new List<Win32Window>();
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EnumWindows(delegate(IntPtr handle, int i)
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{
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windows.Add(new Win32Window(handle));
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return true;
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}, 0);
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return new ReadOnlyCollection<Win32Window>(windows);
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}
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}
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/// <summary>
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/// Return all windows of the current thread.
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/// </summary>
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public static ReadOnlyCollection<Win32Window> GetThreadWindows()
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{
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return GetThreadWindows(GetCurrentThreadId());
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}
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/// <summary>
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/// Return all windows of a given thread
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/// </summary>
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/// <param name="threadId">The thread id</param>
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public static ReadOnlyCollection<Win32Window> GetThreadWindows(int threadId)
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{
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List<Win32Window> windows = new List<Win32Window>();
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EnumThreadWindows(threadId, delegate(IntPtr window, int i)
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{
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windows.Add(new Win32Window(window));
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return true;
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}, 0);
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return new ReadOnlyCollection<Win32Window>(windows);
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}
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/// <summary>
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/// The deskop window
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/// </summary>
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public static Win32Window DesktopWindow
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{
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get
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{
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return new Win32Window(GetDesktopWindow());
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}
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}
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/// <summary>
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/// The current foreground window
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/// </summary>
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public static Win32Window ForegroundWindow
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{
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get
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{
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return new Win32Window(GetForegroundWindow());
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}
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}
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/// <summary>
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/// Bring a window to the top
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/// </summary>
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public void BringWindowToTop()
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{
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BringWindowToTop(_handle);
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}
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public void SetForegroundWindow()
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{
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SetForegroundWindow(_handle);
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}
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public void OpenIcon()
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{
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OpenIcon(_handle);
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}
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/// <summary>
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/// Find a child of this window
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/// </summary>
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/// <param name="className">Name of the class, or null</param>
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/// <param name="windowName">Name of the window, or null</param>
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/// <returns></returns>
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public Win32Window FindChild(string className, string windowName)
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{
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return new Win32Window(FindWindowEx(_handle, IntPtr.Zero, className, windowName));
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}
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/// <summary>
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/// Find a window by name or class
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/// </summary>
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/// <param name="className">Name of the class, or null</param>
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/// <param name="windowName">Name of the window, or null</param>
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/// <returns></returns>
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public static Win32Window FindWindow(string className, string windowName)
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{
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return new Win32Window(FindWindowEx(IntPtr.Zero, IntPtr.Zero, className, windowName));
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}
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/// <summary>
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/// Tests whether one window is a child of another
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/// </summary>
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/// <param name="parent">Parent window</param>
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/// <param name="window">Window to test</param>
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/// <returns></returns>
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public static bool IsChild(Win32Window parent, Win32Window window)
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{
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return IsChild(parent._handle, window._handle);
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}
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/// <summary>
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/// Send a windows message to this window
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/// </summary>
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/// <param name="message"></param>
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/// <param name="wparam"></param>
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/// <param name="lparam"></param>
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/// <returns></returns>
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public int SendMessage(int message, int wparam, int lparam)
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{
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return SendMessage(_handle, message, wparam, lparam);
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}
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/// <summary>
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/// Post a windows message to this window
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/// </summary>
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/// <param name="message"></param>
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/// <param name="wparam"></param>
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/// <param name="lparam"></param>
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/// <returns></returns>
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public int PostMessage(int message, int wparam, int lparam)
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{
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return PostMessage(_handle, message, wparam, lparam);
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}
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/// <summary>
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/// Get the parent of this window. Null if this is a top-level window
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/// </summary>
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public Win32Window Parent
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{
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get
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{
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return new Win32Window(GetParent(_handle));
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}
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}
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/// <summary>
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/// Get the last (topmost) active popup
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/// </summary>
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public Win32Window LastActivePopup
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{
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get
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{
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IntPtr popup = GetLastActivePopup(_handle);
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if (popup == _handle)
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return new Win32Window(IntPtr.Zero);
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else
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return new Win32Window(popup);
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}
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}
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/// <summary>
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/// The text in this window
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/// </summary>
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public string Text
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{
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get
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{
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int length = GetWindowTextLength(_handle);
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StringBuilder sb = new StringBuilder(length + 1);
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GetWindowText(_handle, sb, sb.Capacity);
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return sb.ToString();
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}
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set
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{
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SetWindowText(_handle, value);
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}
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}
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public string WindowClass
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{
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get
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{
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StringBuilder sb = new StringBuilder(1000);
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GetClassName(_handle, sb, sb.Capacity);
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return sb.ToString();
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}
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}
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/// <summary>
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/// Get a long value for this window. See GetWindowLong()
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/// </summary>
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/// <param name="index"></param>
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/// <returns></returns>
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public int GetWindowLong(int index)
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{
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return GetWindowLong(_handle, index);
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}
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/// <summary>
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/// Set a long value for this window. See SetWindowLong()
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/// </summary>
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/// <param name="index"></param>
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/// <param name="value"></param>
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/// <returns></returns>
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public int SetWindowLong(int index, int value)
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{
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return SetWindowLong(_handle, index, value);
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}
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/// <summary>
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/// The id of the thread that owns this window
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/// </summary>
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public int ThreadId
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{
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get
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{
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return GetWindowThreadProcessId(_handle, IntPtr.Zero);
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}
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}
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/// <summary>
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/// The id of the process that owns this window
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/// </summary>
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public int ProcessId
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{
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get
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{
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int processId = 0;
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GetWindowThreadProcessId(_handle, ref processId);
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return processId;
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}
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}
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/// <summary>
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/// Whether the window is minimized
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/// </summary>
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public bool Minimized
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{
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get
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{
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return IsIconic(_handle);
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}
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set
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{
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const int SC_MINIMIZE = 0xF020;
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const int WM_SYSCOMMAND = 0x0112;
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PostMessage(WM_SYSCOMMAND, SC_MINIMIZE, 0);
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}
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}
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/// <summary>
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/// Whether the window is maximized
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/// </summary>
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public bool Maximized
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{
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get
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{
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return IsZoomed(_handle);
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}
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}
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public bool MoveWindow(int X, int Y, int width, int height, bool repaint)
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{
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return MoveWindow(_handle, X, Y, width, height, repaint);
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}
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public Win32Window NextWindow
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{
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get
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{
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IntPtr h = GetNextWindow(_handle, 2);
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if (h == IntPtr.Zero)
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return null;
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return new Win32Window(h);
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}
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}
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/// <summary>
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/// Gets a value indicating whether there are pending message in the message queue.
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/// </summary>
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/// <value><c>true</c> if the are messages pending; otherwise, <c>false</c>.</value>
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public bool MessagesPending
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{
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get
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{
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NativeMessage msg = new NativeMessage();
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return PeekMessage(out msg, _handle, 0, 0, 0);
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}
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}
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/// <summary>
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/// Turn this window into a tool window, so it doesn't show up in the Alt-tab list...
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/// </summary>
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///
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private const int GWL_EXSTYLE = -20;
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private const int WS_EX_TOOLWINDOW = 0x00000080;
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public void MakeToolWindow()
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{
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int windowStyle = GetWindowLong(GWL_EXSTYLE);
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SetWindowLong(GWL_EXSTYLE, windowStyle | WS_EX_TOOLWINDOW);
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}
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[DllImport("user32.dll")]
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private static extern bool BringWindowToTop(IntPtr window);
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[DllImport("user32.dll")]
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private static extern bool CloseWindow(IntPtr window);
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[DllImport("user32.dll")]
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private static extern bool SetForegroundWindow(IntPtr window);
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[DllImport("user32.dll")]
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private static extern bool OpenIcon(IntPtr window);
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[DllImport("user32.dll")]
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private static extern IntPtr FindWindowEx(IntPtr parent, IntPtr childAfter, string className, string windowName);
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[DllImport("user32.dll", EntryPoint = "FindWindow")]
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private static extern IntPtr FindWindowWin32(string className, string windowName);
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[DllImport("user32.dll")]
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private static extern int SendMessage(IntPtr window, int message, int wparam, int lparam);
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[DllImport("user32.dll")]
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private static extern int PostMessage(IntPtr window, int message, int wparam, int lparam);
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[DllImport("user32.dll")]
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private static extern IntPtr GetParent(IntPtr window);
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[DllImport("user32.dll")]
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private static extern IntPtr GetDesktopWindow();
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[DllImport("user32.dll")]
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private static extern IntPtr GetForegroundWindow();
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[DllImport("user32.dll")]
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private static extern IntPtr GetLastActivePopup(IntPtr window);
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[DllImport("user32.dll")]
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private static extern int GetWindowText(IntPtr window, [In][Out] StringBuilder text, int copyCount);
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[DllImport("user32.dll")]
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private static extern bool SetWindowText(IntPtr window, string text);
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[DllImport("user32.dll")]
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private static extern int GetWindowTextLength(IntPtr window);
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[DllImport("user32.dll")]
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private static extern int SetWindowLong(IntPtr window, int index, int value);
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[DllImport("user32.dll")]
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private static extern int GetWindowLong(IntPtr window, int index);
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[DllImport("user32.dll")]
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private static extern int GetClassName(IntPtr window, [In][Out] StringBuilder text, int copyCount);
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private delegate bool EnumWindowsProc(IntPtr window, int i);
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[DllImport("user32.dll")]
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private static extern bool EnumChildWindows(IntPtr window, EnumWindowsProc callback, int i);
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[DllImport("user32.dll")]
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private static extern bool EnumThreadWindows(int threadId, EnumWindowsProc callback, int i);
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[DllImport("user32.dll")]
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private static extern bool EnumWindows(EnumWindowsProc callback, int i);
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[DllImport("user32.dll")]
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private static extern int GetWindowThreadProcessId(IntPtr window, ref int processId);
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[DllImport("user32.dll")]
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private static extern int GetWindowThreadProcessId(IntPtr window, IntPtr ptr);
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[DllImport("user32.dll")]
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private static extern bool IsChild(IntPtr parent, IntPtr window);
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[DllImport("user32.dll")]
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private static extern bool IsIconic(IntPtr window);
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[DllImport("user32.dll")]
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private static extern bool IsZoomed(IntPtr window);
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[DllImport("user32.dll")]
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private static extern IntPtr GetWindowDC(IntPtr hwnd);
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[DllImport("user32.dll")]
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private static extern int ReleaseDC(IntPtr hwnd, IntPtr dc);
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[DllImport("user32.dll")]
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private static extern bool MoveWindow(IntPtr hwnd, int X, int Y, int width, int height, bool repaint);
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[DllImport("user32.dll", CharSet = CharSet.Auto, EntryPoint = "GetWindow", SetLastError = true)]
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private static extern IntPtr GetNextWindow(IntPtr hwnd, [MarshalAs(UnmanagedType.U4)] int wFlag);
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[DllImport("user32.dll")]
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private static extern IntPtr GetWindow(IntPtr hWnd, uint uCmd);
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[DllImport("kernel32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
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private static extern int GetCurrentThreadId();
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/// <summary>
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/// The PeekMessage function dispatches incoming sent messages, checks the thread message queue for a posted message,
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/// and retrieves the message (if any exist).
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/// </summary>
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/// <param name="message">Pointer to an MSG structure that receives message information.</param>
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/// <param name="handle">Handle to the window whose messages are to be retrieved. The window must belong to the current thread.</param>
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/// <param name="filterMin">Specifies the value of the first message in the range of messages to be examined.</param>
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/// <param name="filterMax">Specifies the value of the last message in the range of messages to be examined.</param>
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/// <param name="removeMsg">Specifies how messages are handled.</param>
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/// <returns>If a message is available, the return value is nonzero. If no messages are available, the return value is zero.</returns>
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[SuppressUnmanagedCodeSecurity]
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[return: MarshalAs(UnmanagedType.Bool)]
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[DllImport("User32.dll", CharSet = CharSet.Auto, SetLastError = true)]
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private static extern bool PeekMessage(out NativeMessage message, IntPtr handle, uint filterMin, uint filterMax, uint removeMsg);
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[StructLayout(LayoutKind.Sequential)]
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private struct NativeMessage
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{
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public IntPtr handle;
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public uint msg;
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public IntPtr wParam;
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public IntPtr lParam;
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public uint time;
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public System.Drawing.Point p;
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}
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}
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}
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