ADR-002: In-Process Injection

Status

Accepted.

Context

The project needs access to WPF APIs that are unavailable to out-of-process automation, including binding internals, dependency property analysis, and tree operations that must run on the target Dispatcher.

Decision

Use in-process injection so the inspector executes inside the target WPF application.

Why this was chosen

• enables deep WPF-specific inspection
• supports MVVM, binding, and dependency property analysis
• allows precise routed-event and layout operations

Consequences

• higher complexity than UI Automation
• architecture, privilege, and code-signing concerns matter
• stability and timeout handling must be treated as first-class concerns

For more detail, see Injection and Runtime Selection.