API Reference > imodeljs-frontend > Tools > BeButtonEvent > isValid isValid AccessorReadOnly Determine whether this BeButtonEvent has valid data. get: boolean note BeButtonEvents may be constructed as "blank", and are not considered to hold valid data unless the BeButtonEvent.viewport member is defined. Returns - boolean Defined in core/frontend/src/tools/Tool.ts Line 155 Last Updated: 13 June, 2024