PyQt6 UI Debugger

Systematic debugging methodology for PyQt6 user interface issues including layout problems, widget visibility, signal/slot connections, and styling conflicts.

Description

Provides a structured approach to diagnosing and resolving common PyQt6 UI bugs such as widgets being clipped, hidden, or incorrectly sized. Covers layout constraint analysis, size policy debugging, parent-child hierarchy issues, and runtime inspection techniques. Specializes in problems related to QSizePolicy, sizeHint(), minimumSize(), layout margins, spacing, and z-order issues.

Prerequisites

• PyQt6 installed (pip install PyQt6)
• Python 3.10+
• Basic understanding of Qt's layout system
• Qt Inspector (optional, for advanced runtime debugging)

Usage

Follow this systematic debugging workflow when encountering PyQt6 UI issues.