Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline-enabled application. It is fast, portable, renderer-agnostic, and self-contained (no external dependencies).

Live Demos

Demo	Description	Link
Live ImGui (WASM)	Actual Dear ImGui compiled to WebAssembly via Emscripten	wasm/index.html
Showcase	Landing page with all demos + PR list	turtle-pb.github.io/imgui_xl
Echonation Visual	5-mode audio-reactive canvas demo	echonation.html
Widget Playground	Visual GUI Builder — drag & drop widget designer (Visual Basic/Delphi style)	widgets_playground.html
Pixel OS Model	Interactive Pixel 8 Pro phone simulator with working browser	pixel_os_demo.html

A drag-and-drop GUI designer for Dear ImGui, inspired by Visual Basic and Delphi form builders:

Toolbox with 12 widget types: Button, Text, InputText, Checkbox, RadioButton, Slider, ProgressBar, ColorEdit, Combo, Separator, Group, SameLine
Drag & drop widgets from toolbox to canvas
Move & resize widgets directly on canvas
Properties panel — edit position, size, text, color, visibility, enabled state
Widget list — hierarchical view of all placed widgets
Export — generate ImGui C++ code or JSON layout to clipboard
Console — command interface with help, clear, count, list, delete, export

Sample Layouts

Five ready-made layouts via the Samples menu: Audio Mixer, Settings Panel, Media Player, Color Picker, Debug Console — plus a full Pioneer DJ-S11 Mixer (2 decks, 3-band EQ, crossfader, jog wheels, FX).

Perform Mode & Web MIDI

Perform Mode (P key or ▶ Perform): all placed widgets become live controls — draggable sliders, toggleable buttons, rotatable jog wheels, animated VU meters
Web MIDI (Chrome/Edge/Opera): connect any MIDI controller, MIDI Learn (L key) to map hardware CC/notes/pitch-bend to on-screen widgets, MIDI OUT feedback for LED rings and motor faders
Probe MIDI: hardware diagnostics with input/output enumeration + live message monitor
Numark Mixstream Pro preset included as a starter mapping (requires Computer/MIDI mode on the unit)

Built-in Audio Engine (DJ-S11)

The DJ-S11 sample includes a fully functional audio engine via Web Audio API:

2 royalty-free procedural tracks, synthesized in-browser (no samples, no licensing, works offline): House 128 BPM on Deck A, Breakbeat 140 BPM on Deck B
PLAY / CUE / SYNC — working sequencer per deck with beatmatching
3-band EQ (HI/MID/LOW) per channel via BiquadFilters
Channel faders + equal-power crossfader
Pitch control ±8% per deck
Master volume + real RMS VU meters (AnalyserNode)
Jog wheels nudge playback phase
FX: ECHO on master (delay + feedback)
Live playhead progress bars and time counters on each deck

Upstream Contributions

This fork tracks upstream and contributes back via PRs:

PR	Issue	Description	Status
#9467	#8878	Android CI: Pin Gradle 9.4.1 via setup-gradle action	MERGED ✅
#9473	#8802	OpenGL2/3: Backup and restore GL_UNPACK state in UpdateTexture()	MERGED ✅
#9474	#6627	Android: Clear mouse pos on touch release + SDL2: Restore StartTextInput	MERGED ✅
#9481	#8597	DX9/Allegro5/SDLRenderer2/SDLRenderer3: Defer texture destruction until UnusedFrames > 0	Open
#9483	#6302	FreeType: Fix CBDT/COLR bitmap color emoji font loading (NotoColorEmoji, Twemoji)	Open
#9468	#9390	Vulkan: Fixed use-after-free in multi-viewport dynamic rendering	Closed
#9469	#3446	Android: Move JNI keyboard/clipboard into backend, add display metrics	Open (under review)

Bug Fixes Summary

Merged upstream (3 PRs):

Android CI — Pinned Gradle 9.4.1 via setup-gradle action, no binaries (#9467)
OpenGL GL_UNPACK state — Backup/restore GL_UNPACK_ROW_LENGTH and GL_UNPACK_ALIGNMENT in UpdateTexture() to prevent caller state corruption (#9473)
Android touch release — Clear mouse position on AMOTION_EVENT_ACTION_UP so buttons don't stay hovered (#6627)
SDL2 soft keyboard — Restored SDL_StartTextInput()/SDL_StopTextInput() under #ifdef __ANDROID__ for on-screen keyboard (#7636)

Open PRs (3):

Texture destroy deferral — Defer destruction until UnusedFrames > 0 in DX9, Allegro5, SDLRenderer2, SDLRenderer3, matching all other backends. Addresses multi-threaded rendering safety concerns raised in #8597. (#9481)
CBDT/COLR emoji fonts — Fix FreeType loading of bitmap color emoji fonts (NotoColorEmoji, Twemoji COLR) by detecting CBDT table and using FT_Select_Size(). (#9483)
Android backend cleanup — Move JNI keyboard/clipboard into backend, add display metrics, breaking change to Init() signature (#9469, under review by Omar)

Go Bindings

This fork includes Go (cgo) bindings for Dear ImGui — see bindings/go/README.md for full setup instructions (including the Windows MinGW gotchas).

bindings/go/
  imgui_bridge.h/.cpp  — Thin C API bridge (extern "C")
  imgui.go             — Go cgo wrapper package
  README.md            — Full documentation + troubleshooting

examples/example_golang/
  main.go              — Null-mode example
  Makefile             — Build targets

Quick start:

# Requires: Go 1.21+, C++ compiler (MinGW-w64 gcc on Windows), CGO_ENABLED=1
cd examples/example_golang
go mod tidy
CGO_ENABLED=1 go build -o imgui_go_example .
./imgui_go_example

Windows users: Go's cgo needs MinGW-w64 gcc (install via MSYS2: pacman -S mingw-w64-x86_64-gcc). LLVM clang fails with -mthreads errors. Verify with go env CC CXX CGO_ENABLED.

Sync Status

Branch	Tracks	Status
`master`	`upstream/master`	Synced
`docking`	`upstream/docking`	Synced

Quick Start

# Clone
git clone https://github.com/Turtle-PB/imgui_xl.git
cd imgui_xl

# Build example_null (no backend dependencies needed)
# Windows (MinGW)
mingw32-make -C examples/example_null

# Windows (MSVC)
cd examples\example_null
.\build_win32.bat

# Linux/macOS
cd examples/example_null
make

Contributing

See CONTRIBUTING.md for guidelines on submitting issues, PRs, and syncing with upstream.

License

MIT License — see LICENSE.txt for details.

Credits

Dear ImGui is developed by Omar Cornut and every direct or indirect contributor to the GitHub repository.

Echonation visuals inspired by @Echonation. Fork by Paul Adcock (Turtle-PB).

Languages

C++ 73.3%

C 24.1%

Objective-C++ 2.2%

Objective-C 0.2%

Python 0.1%

README.md

imgui_xl