Here is a sample project from RealDWG DevTV that has been modified to use WiX to deploy the application.
To try this, please download and install the WiX Toolset.
There are two batch files included in the sample project folder. These batch files run as "Pre-build event" when the project is built. Please ensure that the path of the VC++ re-distributables, Fonts and other RealDWG merge modules are correctly specified in the batch files.
The purpose of the batch files is to copy all the files needed for the packaging to a common folder named as "ForPackaging". The WiX setup project builds the MSI by using this folder path without having to look for files in different paths.
Download MyRealDWG_Sample