Device for generative production of at least one three-dimensional object by layer-by-layer selective solidification of at least one solidifiable building material by means of at least one energy beam generated by at least one radiation generating device, comprising: - at least one radiation generating device for generating at least one energy beam for solidifying at least one solidifiable building material, - at least one coating device for carrying out at least one coating process for applying a defined building material layer of at least one solidifiable building material to a building plane or to a building material layer of at least one solidifiable building material previously applied in the course of carrying out a previous coating process, wherein the at least one coating device is mounted movably relative to the construction plane and comprises one or more coating elements which are moved over the construction plane to form defined construction material layers, wherein - at least one detection device for detecting layer information describing the quality, in particular the surface, of a building material layer applied by means of the coating device in the course of carrying out a coating process, at least in sections, the at least one detection device being set up for this purpose, corresponding layer information during a coating process carried out by means of the coating device, the at least one detection device being mounted such that it can move relative to the construction plane, the at least one detection device being motion-coupled to the at least one coating device; and - at least one further detection device for detecting melt region information, in particular describing the dimensions and/or the shape and/or the temperature, of a melted building material layer region produced by means of the at least one energy beam, and at least one evaluation device associated with the further detection device for evaluating detected melt region information with regard to a quality of the at least one three-dimensional object to be produced; characterized in that the at least one detection device is structurally integrated into the at least one coating device. - at least one radiation generating device for generating at least one energy beam for solidifying at least one solidifiable building material, - at least one coating device for carrying out at least one coating process for applying a defined building material layer of at least one solidifiable building material to a building plane or to a building material layer of at least one solidifiable building material previously applied in the course of carrying out a previous coating process, wherein the at least one coating device is mounted movably relative to the construction plane and comprises one or more coating elements which are moved over the construction plane to form defined construction material layers, wherein - at least one detection device for detecting layer information describing the quality, in particular the surface, of a building material layer applied by means of the coating device in the course of carrying out a coating process, at least in sections, the at least one detection device being set up for this purpose, corresponding layer information during a coating process carried out by means of the coating device, the at least one detection device being mounted such that it can move relative to the construction plane, the at least one detection device being motion-coupled to the at least one coating device; and - at least one further detection device for detecting melt region information, in particular describing the dimensions and/or the shape and/or the temperature, of a melted building material layer region produced by means of the at least one energy beam, and at least one evaluation device associated with the further detection device for evaluating detected melt region information with regard to a quality of the at least one three-dimensional object to be produced;