@joebigelow / wix-1
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1 // Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
2
3 namespace WixToolset.Core.Native.Msm
4 {
5 using System;
6 using System.Runtime.InteropServices;
7
8 /// <summary>
9 /// Merge merge modules into an MSI file.
10 /// </summary>
11 [ComImport, Guid("F94985D5-29F9-4743-9805-99BC3F35B678")]
12 public class MsmMerge2
13 {
14 }
15
16 /// <summary>
17 /// Defines the standard COM IClassFactory interface.
18 /// </summary>
19 [ComImport, Guid("00000001-0000-0000-C000-000000000046")]
20 [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
21 public interface IClassFactory
22 {
23 /// <summary>
24 ///
25 /// </summary>
26 [return: MarshalAs(UnmanagedType.IUnknown)]
27 object CreateInstance(IntPtr unkOuter, [MarshalAs(UnmanagedType.LPStruct)] Guid iid);
28 }
29
30 /// <summary>
31 /// Contains native methods for merge operations.
32 /// </summary>
33 public static class MsmInterop
34 {
35 [DllImport("mergemod.dll", EntryPoint = "DllGetClassObject", PreserveSig = false)]
36 [return: MarshalAs(UnmanagedType.IUnknown)]
37 private static extern object MergeModGetClassObject([MarshalAs(UnmanagedType.LPStruct)] Guid clsid, [MarshalAs(UnmanagedType.LPStruct)] Guid iid);
38
39 /// <summary>
40 /// Load the merge object directly from a local mergemod.dll without going through COM registration.
41 /// </summary>
42 /// <returns>Merge interface.</returns>
43 public static IMsmMerge2 GetMsmMerge()
44 {
45 var classFactory = (IClassFactory)MergeModGetClassObject(typeof(MsmMerge2).GUID, typeof(IClassFactory).GUID);
46 return (IMsmMerge2)classFactory.CreateInstance(IntPtr.Zero, typeof(IMsmMerge2).GUID);
47 }
48 }
49 }