If you were trying to find how to create a windows gadgets project in visual studio you have come to the right place.
Well its much simpler than you thought.
1. Create a CAB Project. Select File -> New -> Project, and pick CAB Project in Other Project Types
-> Setup and Deployment -> Visual Studio Installer
Type the Project Name you want, in my scenario I have given MyNewCabProject and Press OK
2. Select the project name in the Solution Explorer and select the PostBuildEvent
3. Copy these lines into the Post-Build Even Command Line, replacing MyNewGadgetName with the name of your gadget.
copy /y "$(BuiltOuputPath)" %GadgetName%
Now, when the project builds, it creates the .CAB file, copies it to a .gadget file and then runs the gadget to install it.