The examples can be built using a normal cmake workflow.
First you generate the configuration files.
$ git clone https://github.com/bigno78/drag.git
$ cd drag
$ mkdir build && cd build
$ cmake ..
Then you can build all of the examples.
$ cd examples
$ make
Or just a single one.
$ cd examples/example-dir
$ make
One way to build the examples on windows is to open the cmake project directly in visual studio as a folder. Then you can pick any of the targets defined and build them.
Alternatively you can generate the cmake build configuration as above.
> git clone https://github.com/bigno78/drag.git
> cd drag
> mkdir build && cd build
> cmake ..
This will create a visual studio project. You can then open it in visual studio and build the desired targets.