1 | using System;
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2 | using System.Runtime.InteropServices;
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3 |
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4 | public static class TaskBarProgress
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5 | {
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6 | public enum TaskBarStates
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7 | {
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8 | NoProgress = 0,
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9 | Indeterminate = 0x1,
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10 | Normal = 0x2,
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11 | Error = 0x4,
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12 | Paused = 0x8
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13 | }
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14 |
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15 | [ComImport]
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16 | [Guid("ea1afb91-9e28-4b86-90e9-9e9f8a5eefaf")]
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17 | [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
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18 | private interface ITaskBarList3
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19 | {
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20 | // ITaskbarList
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21 | [PreserveSig]
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22 | void HrInit();
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23 | [PreserveSig]
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24 | void AddTab(IntPtr hwnd);
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25 | [PreserveSig]
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26 | void DeleteTab(IntPtr hwnd);
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27 | [PreserveSig]
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28 | void ActivateTab(IntPtr hwnd);
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29 | [PreserveSig]
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30 | void SetActiveAlt(IntPtr hwnd);
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31 |
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32 | // ITaskbarList2
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33 | [PreserveSig]
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34 | void MarkFullscreenWindow(IntPtr hwnd, [MarshalAs(UnmanagedType.Bool)] bool fFullscreen);
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35 |
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36 | // ITaskbarList3
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37 | [PreserveSig]
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38 | void SetProgressValue(IntPtr hwnd, UInt64 ullCompleted, UInt64 ullTotal);
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39 | [PreserveSig]
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40 | void SetProgressState(IntPtr hwnd, TaskBarStates state);
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41 | }
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42 |
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43 | [ComImport]
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44 | [Guid("56fdf344-fd6d-11d0-958a-006097c9a090")]
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45 | [ClassInterface(ClassInterfaceType.None)]
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46 | private class CustomTaskBar
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47 | {
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48 | }
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49 |
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50 | private static readonly ITaskBarList3 TaskBarInstance = (ITaskBarList3)new CustomTaskBar();
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51 | private static readonly bool TaskBarSupported = Environment.OSVersion.Version >= new Version(6, 1);
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52 |
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53 | public static void SetState(IntPtr windowHandle, TaskBarStates taskBarState)
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54 | {
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55 | if (TaskBarSupported) TaskBarInstance.SetProgressState(windowHandle, taskBarState);
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56 | }
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57 |
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58 | public static void SetValue(IntPtr windowHandle, double progressValue, double progressMax)
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59 | {
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60 | if (TaskBarSupported) TaskBarInstance.SetProgressValue(windowHandle, (ulong)progressValue, (ulong)progressMax);
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61 | }
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62 | }
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