  We present our recently developed 3-dimensional chemodynamical code for
galaxy evolution. It follows the evolution of all components of a galaxy such
as dark matter, stars, molecular clouds and diffuse interstellar matter (ISM).
Dark matter and stars are treated as collisionless $N$-body systems. The ISM is
numerically described by a smoothed particle hydrodynamics (SPH) approach for
the diffuse (hot) gas and a sticky particle scheme for the (cool) molecular
clouds. Additionally, the galactic components are coupled by several phase
transitions like star formation, stellar death or condensation and evaporation
processes within the ISM. As an example here we present the dynamical, chemical
and photometric evolution of a star forming dwarf galaxy with a total baryonic
mass of $2 \times 10^9 {\rm M}_\odot$.
