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Windows7Taskbar.cs
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Windows7Taskbar.cs
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// Copyright (c) Microsoft Corporation. All rights reserved.
using System;
using System.Runtime.InteropServices;
namespace wyDay.Controls {
/// <summary>
/// The primary coordinator of the Windows 7 taskbar-related activities.
/// </summary>
public static class Windows7Taskbar {
private static ITaskbarList3 _taskbarList;
internal static ITaskbarList3 TaskbarList {
get {
if (_taskbarList == null) {
lock (typeof(Windows7Taskbar)) {
if (_taskbarList == null) {
_taskbarList = (ITaskbarList3)new CTaskbarList();
_taskbarList.HrInit();
}
}
}
return _taskbarList;
}
}
static readonly OperatingSystem osInfo = Environment.OSVersion;
internal static bool Windows7OrGreater {
get {
return (osInfo.Version.Major == 6 && osInfo.Version.Minor >= 1)
|| (osInfo.Version.Major > 6);
}
}
/// <summary>
/// Sets the progress state of the specified window's
/// taskbar button.
/// </summary>
/// <param name="hwnd">The window handle.</param>
/// <param name="state">The progress state.</param>
public static void SetProgressState(IntPtr hwnd, ThumbnailProgressState state) {
if (Windows7OrGreater)
TaskbarList.SetProgressState(hwnd, state);
}
/// <summary>
/// Sets the progress value of the specified window's
/// taskbar button.
/// </summary>
/// <param name="hwnd">The window handle.</param>
/// <param name="current">The current value.</param>
/// <param name="maximum">The maximum value.</param>
public static void SetProgressValue(IntPtr hwnd, ulong current, ulong maximum) {
if (Windows7OrGreater)
TaskbarList.SetProgressValue(hwnd, current, maximum);
}
[DllImport("user32.dll", CharSet = CharSet.Auto)]
internal static extern int SendMessage(IntPtr hWnd, int wMsg, int wParam, int lParam);
}
}