Gated　photoswitching　systems,　which　enable　control　over　photochromic　properties,　play　an　important　role　in　chemistry.　Here,　we　present　a　novel　gated　system　based　on　extended　unsaturated　1,3-dicarbonyl　derivatives　of　diarylethenes　by　manipulating　keto-enol　tautomerism.　While　the　intramolecular　charge　transfer　process　blocked　the　photochromism,　the　creation　of　an　ester　enabled　efficient　bidirectional　photoswitching.　The　use　of　acid/base　further　induced　a　shift　of　the　keto-enol　equilibrium.　Finally,　switchable　multistep　gating　control　of　the　photochrome　was　achieved,　enhancing　the　complexity.