initial custom action library, "hello, world" quality

src/installer-ca/abp_ca.cpp

+//-------------------------------------------------------------------------------------------------
+// <copyright file="wixca.cpp" company="Outercurve Foundation">
+//   Copyright (c) 2004, Outercurve Foundation.
+//   This software is released under Microsoft Reciprocal License (MS-RL).
+//   The license and further copyright text can be found in the file
+//   LICENSE.TXT at the root directory of the distribution.
+// </copyright>
+// 
+// <summary>
+//    Windows Installer XML CustomAction DllMain function.
+// </summary>
+//-------------------------------------------------------------------------------------------------
+#include "precomp.h"
+
+/********************************************************************
+DllMain - standard entry point for all WiX CustomActions
+
+********************************************************************/
+extern "C" BOOL WINAPI DllMain(
+    IN HINSTANCE hInst,
+    IN ULONG ulReason,
+    IN LPVOID)
+{
+    switch (ulReason)
+    {
+    case DLL_PROCESS_ATTACH:
+        WcaGlobalInitialize(hInst);
+        break;
+
+    case DLL_PROCESS_DETACH:
+        WcaGlobalFinalize();
+        break;
+    }
+
+    return TRUE;
+}
+