The forced windowed mode of DXGL does not get along with ZC's (or is that Allegro's?) fullscreen, for that you will want to simply use the zc.cfg settings to enable its native windowed mode (which will be rendered by DXGL using default settings).
As for fullscreen, I will have some .ini files for you soon which will be tested with DXGL 0.5.16. While DXGL 0.5.17 will have a configuration format change this will only affect the registry and not .ini files; both registry settings and .ini files are designed to be forwards compatible.
Discuss topics related to DXGL that don't belong in any other category.