A detailed analysis of quantum information measures of a flat two-dimensional Dirichlet waveguide with Neumann window(s) was done. Bound states of the system were found in position and momentum space, and their evolution with respect to different window lengths was explained. Using them along with Shannon’s information entropy, Onicescu informational energy and Fisher information were evaluated. In addition, the statistical measure of complexity was also evaluated. It was found that the measures at the small length of the window were independent of its boundary condition. Qualitative and quantitative analyses of the measures were performed. They were found to satisfy their fundamental inequalities.