  Gauging isometries of four-dimensional N=2 supergravity theories yields an
N=2 supersymmetric theory with a scalar potential. In this note, we study the
well-known constraints for four-dimensional N=2 Minkowski vacua of such
theories. We propose that classically a projective special K\"ahler submanifold
of the projective K\"ahler target space of the ungauged theory describes the
moduli space of the complex scalar fields of massless vector multiplets for N=2
Minkowski vacua configurations, which then receives quantum corrections from
integrating out massive fields. Subloci of projective special K\"ahler
manifolds appear as supersymmetric flux vacua in the context of type IIB
Calabi-Yau threefold compactifications with background fluxes as well. While
these flux vacua equations arise from the critical locus of an N=1
superpotential, we show that these equations can also be obtained from the N=2
supersymmetric Minkowski vacuum equations of gauged N=2 supergravity theories
upon gauging suitable isometries in the semi-classical universal hypermultiplet
sector of type IIB string Calabi-Yau threefold compactifications. Thus, we give
an intrinsic N=2 supersymmetric interpretation to the flux vacua equations.
