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copied!<p>If you look at the original signature, the function needs an <code>IntPtr</code> handle, a <code>Guid</code> id and an <code>PropertyStore</code> object that will be populated by the data.</p> <pre><code>HRESULT SHGetPropertyStoreForWindow( _In_ HWND hwnd, _In_ REFIID riid, _Out_ void **ppv ); </code></pre> <p>Translating this into c# would look like this:</p> <pre><code>[DllImport("shell32.dll", SetLastError = true)] static extern int SHGetPropertyStoreForWindow( IntPtr handle, ref Guid riid, out IPropertyStore propertyStore); </code></pre> <p>And you can grab the <code>IPropertyStore</code> interface from <a href="http://www.pinvoke.net/default.aspx/Interfaces/IPropertyStore.html" rel="nofollow">PInvoke.net</a>:</p> <pre><code>[ComImport, Guid("886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] interface IPropertyStore { [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)] void GetCount([Out] out uint cProps); [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)] void GetAt([In] uint iProp, out PropertyKey pkey); [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)] void GetValue([In] ref PropertyKey key, out object pv); [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)] void SetValue([In] ref PropertyKey key, [In] ref object pv); [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)] void Commit(); } </code></pre> <p>The only thing left is to actually implement the <code>PropertyStore</code>. Similar implementations in the .net framework can be found in e.g. <a href="http://msdn.microsoft.com/en-us/library/system.printing.printsystemobject.aspx" rel="nofollow">PrintSystemObject</a>.</p> <p>After implementing this you should be able to simply call the method and set the property:</p> <pre><code>IPropertyStore store = new PropertyStore(); //your propery id in guid var g = new Guid("32CE38B2-2C9A-41B1-9BC5-B3784394AA44"); SHGetPropertyStoreForWindow(this.Handle, ref g, out store); </code></pre>

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