//Copyright (c) Microsoft Corporation. All rights reserved. using System; using System.Runtime.InteropServices; using Microsoft.WindowsAPICodePack.Shell; using Microsoft.WindowsAPICodePack.Shell.PropertySystem; using MS.WindowsAPICodePack.Internal; namespace Microsoft.WindowsAPICodePack.Taskbar { /// <summary> /// Represents a separator in the user task list. The JumpListSeparator control /// can only be used in a user task list. /// </summary> public class JumpListSeparator : IJumpListTask, IDisposable { internal static PropertyKey PKEY_AppUserModel_IsDestListSeparator = SystemProperties.System.AppUserModel.IsDestListSeparator; /// <summary> /// Initializes a new instance of a JumpListSeparator. /// </summary> public JumpListSeparator() { } private IPropertyStore nativePropertyStore; private IShellLinkW nativeShellLink; /// <summary> /// Gets an IShellLinkW representation of this object /// </summary> internal IShellLinkW NativeShellLink { get { if (nativeShellLink != null) { Marshal.ReleaseComObject(nativeShellLink); nativeShellLink = null; } nativeShellLink = (IShellLinkW)new CShellLink(); if (nativePropertyStore != null) { Marshal.ReleaseComObject(nativePropertyStore); nativePropertyStore = null; } nativePropertyStore = (IPropertyStore)nativeShellLink; PropVariant propVariant = new PropVariant(); propVariant.SetBool(true); nativePropertyStore.SetValue(ref PKEY_AppUserModel_IsDestListSeparator, ref propVariant); propVariant.Clear(); nativePropertyStore.Commit(); return nativeShellLink;; } } #region IJumpListTask Members #endregion #region IDisposable Members /// <summary> /// Release the native and managed objects /// </summary> /// <param name="disposing">Indicates that this is being called from Dispose(), rather than the finalizer.</param> public void Dispose(bool disposing) { if (nativePropertyStore != null) { Marshal.ReleaseComObject(nativePropertyStore); nativePropertyStore = null; } if (nativeShellLink != null) { Marshal.ReleaseComObject(nativeShellLink); nativeShellLink = null; } } /// <summary> /// Release the native objects. /// </summary> public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } /// <summary> /// Implement the finalizer. /// </summary> ~JumpListSeparator() { Dispose(false); } #endregion } }
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