DBYTEPAD

Small Win32 text editor written in C.

No Electron. No webview. No telemetry.

Tiny line

The tiny builds are live in Releases.

Build	Size	Role
DBYTEPAD NANO v0.3.0	421 B / 3368 bits	VOID executable, exits immediately
DBYTEPAD-1K v0.1.0	454 B	size-kill Win32 EDIT core
DBYTEPAD Micro v0.1.0	1224 B	practical tiny editor: argv open, edit, Ctrl+S save-back

SIZE LAB: docs/SIZE_LAB.md

Build first. Measure second. Talk third.

Build

build.bat

Output:

build\dbytepad.exe

Run

build\dbytepad.exe README.md

Features

• Open, save, reload.
• Read-only open.
• Recent files.
• Find and replace.
• Word Wrap.
• Font setting.
• Drag and drop file open.
• File Facts.
• Line, column, char count, and UTF-8 byte count.
• Remembers window size, font, word wrap, and recent files in dbytepad.ini.

Architecture pipeline

flowchart TD
    A[User / command line / drag-drop] --> B[wWinMain]
    B --> C[Win32 main window]
    C --> D[Menu + accelerators + messages]
    D --> E[RichEdit text buffer]

    F[Disk file] --> G[read_text]
    G --> H[decode: UTF-8 / UTF-16LE / ANSI fallback]
    H --> E

    E --> I[status + facts]
    I --> J[line / column / chars / UTF-8 bytes]

    E --> K[save_file]
    K --> L[encode UTF-8 + CRLF]
    L --> F

    E --> M[DByte mode detector]
    M --> N[title/status DBYTE marker]
    M --> O[DByte Facts]
    M --> P{dbyte.exe in PATH?}
    P -- yes --> Q[Run DByte / DByte Version]
    Q --> R[external dbyte tool]
    P -- no --> S[editor still works]

Loading

DByte mode

DBYTEPAD knows DByte source files:

• .dby
• .dbyte
• .dbyterc
• Dbyte.toml

When a DByte file is open, the title and status bar show DBYTE.

Tools > DByte Facts works without the DByte tool installed.

Tools > Run DByte and Tools > DByte Version use the external DByte command-line tool when it is in PATH.

DByte mode is optional. DBYTEPAD still opens, edits, and saves DByte source files without DByte installed.

Release

Current release: v1.2.1

Measured build:

• commit: c26cb7f
• exe: 185856 bytes
• source: 1431 lines
• source: 42963 bytes
• sha256: e45cfbc8997fedf2f6d248144bde683349b873bebd80db594b43c3a174b5432a

Docs

Start with docs.

License

MIT. See LICENSE.