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Annotations and Diff View

HexView now supports lightweight annotations and side-by-side diff highlighting.

Annotations

The control exposes:

• Annotations
• AnnotationMoved

Annotations are rendered as highlighted byte ranges with optional labels.

Use HexAnnotationStorage to persist them:

HexAnnotationStorage.Save(path, annotations);
var loaded = HexAnnotationStorage.Load(path);

The sample viewer adds:

• add-from-selection actions
• next and previous annotation navigation
• a side panel listing annotations
• Ctrl+drag repositioning inside the control

Diff View

The diff sample computes a sorted set of changed offsets, then assigns:

HexViewControl1.DifferencesProvider = (start, end) => _diffOffsets.GetViewBetween(start, end);
HexViewControl2.DifferencesProvider = (start, end) => _diffOffsets.GetViewBetween(start, end);

That lets both controls highlight the same changed bytes while keeping their own overlay state.

Lock-step Editing

The diff sample also shows a higher-level behavior: edits in one view can be mirrored into the other overlay before recomputing diff offsets.