Pen 11 v2.0.0 — Direct3D 11 Screen Annotation Engine for Windows 11

🖊️ Pen 11 v2.0.0 — The Ultimate Screen Annotation Engine for Windows 11

A high-performance, ultra-lightweight, and completely free screen annotation tool optimized specifically for Windows 11.

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✨ What's New in v2.0.0

🎬 60 FPS Fluid Animation Suite

• Smooth Toolbar Collapse / Expand: Toggle into a clean, minimal floating pill containing only the unhide button (🙈) and drag handle using QPropertyAnimation (InOutCubic, 240ms).
• Non-Blocking Opacity Fades: Floating sub-toolbars (Color Palette, Shapes Menu, Cursor Options) fade in and out smoothly (InOutSine 150ms) with zero visual stutter or layout fighting.

🪟 Modular Floating Sub-Toolbars & Drag Persistence

• 12-Color Floating Palette: Quick access to 12 curated swatches with long-press nib width adjustments.
• Geometric Shapes Menu: Instant access to Lines, Arrows, Rectangles, Rounded Rectangles, Ellipses, and Triangles.
• Intelligent Drag Synchronization: Attached sub-toolbars glide smoothly when dragging the main toolbar, and remember customized screen coordinates independently.
• Monkey Mode State Machine: Switch effortlessly between Active Ink (🐵), Cursor Pass-Through (🐒), and Minimal Collapsed Pill (🙈).

📐 Smart Objects & Pure Vector Selection

• Oriented Bounding Box (OBB) Engine: Pure vector strokes track their geometry during centroid rotation, scaling, and dragging.
• Gesture Hold Snapping: Hold your pen for 400ms at the end of a stroke to auto-snap into perfect geometric shapes.
• Shift-Constrain: Hold Shift while drawing for 1:1 square/circle aspect ratios or 45° angle snapping.

💾 Performance & System Efficiency

• 50,000-Stroke Vector Capacity: Draw infinitely with zero raster degradation.
• 5,000-Step Undo Stack: Full undo/redo confidence with capped memory overhead.
• Near 0.0% Idle CPU Usage: Respects your laptop battery and background resources.
• Single-Instance IPC Guard: Prevents duplicate background processes or hotkey conflicts.

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💻 System Requirements & Compatibility

• Operating System: Windows 11 / Windows 10 (64-bit)
• Memory (RAM): Minimum 50 MB RAM (< 0.1% typical usage)
• Graphics: Direct3D 11 compatible GPU (Intel, AMD, NVIDIA)
• Storage: 38.6 MB portable standalone executable (Zero installation required)
• Display: 720p, 1080p, 2K, 4K, 60Hz, 120Hz, 144Hz+ high refresh displays

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🚀 How to Run

1. Download Pen 11.exe from the assets below.
2. Double-click to run immediately — no installer or admin permissions needed!

Pen 11 v1.2.0: The Smart Selection & Persistence Update

This massive update introduces persistent settings, a robust selection engine, and significant stability improvements to Pen 11!

✨ New Features

• Persistent Settings: A new Storage Manager instantly saves your custom colors, pen sizes, and exact toolbar position. Everything is exactly how you left it when you restart the app.
• Multi-Select Lasso: You can now draw a circle to lasso and instantly select multiple strokes at once!
• Single-Instance Guard: A new background IPC Manager guarantees only one instance of Pen 11 runs at a time, eliminating RAM leaks and shortcut glitches.
• OOM Crash Protection: Safely draw infinitely! Pen 11 handles up to 50,000 strokes on screen with a 5,000-step Undo stack without crashing.

🐛 Bug Fixes

• Rotation Overhaul: Selection handles now perfectly track the true bounding box of rotated objects.
• Float-Precision Scaling: Fixed a bug where scaling a selected stroke caused the actual "nib size" of the ink to inflate or distort.
• Smart UI Auto-Hide: Floating toolboxes (shapes, colors) now seamlessly fade away when you switch to primary drawing tools.

Pen 11 - Initial Release

First public release of Pen 11 for Windows 11. Enjoy!