Custom action library, initial version

installer/src/custom-action/close_application.cpp

Index: installer/src/custom-action/close_application.cpp
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new file mode 100644
--- /dev/null
+++ b/installer/src/custom-action/close_application.cpp
@@ -0,0 +1,45 @@
+/**
+ * \file close_application.cpp
+ */
+
+#include "session.h"
+#include "property.h"
+#include "database.h"
+
+/**
+ * Exposed DLL entry point for custom action. 
+ * The function signature matches the calling convention used by Windows Installer.
+ *
+ * \param[in] session_handle
+ *     Windows installer session handle
+ */
+extern "C" UINT __stdcall 
+abp_close_applications( MSIHANDLE session_handle )
+{
+  // Always supply an externally-exposed function with a catch-all block
+  try {
+    Immediate_Session session( session_handle, L"abp_close_applications" ) ;
+    session.log( L"Have session object" ) ;
+
+    Installation_Database db( session ) ;
+    session.log( L"Have database object" ) ;
+
+    session.log( L"Still with new Property operator+ implementations!" ) ;
+    session.log( L"VersionMsi = " + Property( session, L"VersionMsi" ) ) ;
+
+    Property tv( session, L"TESTVARIABLE" ) ;
+    session.log( L"TESTVARIABLE = " + tv ) ;
+    session.log( L"Setting TESTVARIABLE to 'testvalue'" ) ;
+    tv = L"testvalue" ;
+    session.log( L"TESTVARIABLE = " + tv ) ;
+  }
+  catch( ... )
+  {
+    return ERROR_INSTALL_FAILURE ;
+  }
+
+  /*
+   * While we're working on infrastructure (and not the CA itself), fail the action.
+   */
+  return ERROR_INSTALL_FAILURE ;
+}