Qt Widget Inspector

The Qt Widget Inspector is a developer-focused tool that exposes the live widget hierarchy and properties of a Qt-based application to support debugging, UI verification, and QA. It targets Qt developers, testers, and performance engineers who need precise, reproducible data about a running UI to compare builds or platforms and validate layout and signal-slot wiring.
Conceptually, the tool attaches to a running Qt process or loads an executable for analysis and traverses the QObject/widget graph using Qt reflection. It builds a hierarchical tree where each node contains class_name, object_name, geometry, visibility, enabled state, and a map of properties, plus detected signals. The output is a structured, exportable representation designed for automation, diffs between captures, and targeted filtering by class or name.
Inputs are defined by target process or executable, attachment mode, optional filters, max_depth, and timestamp; outputs are the tree payload plus a summary. It supports cross-platform Qt Widget apps and exports in JSON to integrate with CI. Geometry is measured in pixels and timestamps use ISO 8601. This enables reproducible UI audits across builds and environments.
Error handling and edge cases cover attach failures, missing Qt symbols, and cross-platform permission issues; when data is partially unavailable, the tool provides a best-effort tree with indicators. Assumptions include Qt Widget apps and standard property exposure; exclusions cover QML-only apps and any runtime modification of the target app.