A modern VGA text mode font editor for Windows, written in C using Windows API. Written with Cursor AI.

• Edit 8x16 pixel VGA fonts (256 characters)
• Visual character grid displaying all 256 characters
• Pixel-level character editor
• Mouse and keyboard support for pixel editing
• Character selection and navigation

• Modern UI design (Material Design-like colors)
• Visual Styles and DPI awareness support
• Hover effects and smooth selection highlights
• Responsive design with clean appearance
• Enhanced user experience with toolbar and status bar

• Reading: VGAF format (.vgaf) - Editor's native format
• Saving: VGAF format (.vgaf) - Editor's native format, C header file (.h)
• Automatic file format detection

• Undo/Redo system (20 levels)
• Character copy/paste (Ctrl+C/V)
• Zoom support (1x-2x magnification)
• Keyboard shortcuts (Ctrl+O, Ctrl+S, Delete, etc.)
• Auto-save warnings
• File change tracking

• Drag & drop for multi-pixel editing
• Real-time character preview
• Detailed information display in status bar
• Quick access buttons in toolbar

• MinGW-w64 UCRT (with gcc and windres)
• Make (optional, for using Makefile)
• Windows 10 or newer (UCRT requirement)
• Visual C++ Redistributable (for theming support)

• Windows 10/11 (due to UCRT requirements)
• 32-bit and 64-bit architectures
• DPI scaling support (High-DPI displays)

This project is designed to be compiled with MinGW-w64 UCRT. Make sure MinGW-w64 UCRT is installed on your system and added to PATH.

Note: Due to UCRT (Universal C Runtime) usage, the compiled program only runs on Windows 10 and newer versions.

# Standard build
make

# Debug version
make debug

# Release version (optimized)
make release

# Clean
make clean

# Help
make help

# Compile resource file
windres -i resource.rc -o resource.o

# Compile C files
gcc -Wall -Wextra -std=c99 -O2 -c main.c -o main.o
gcc -Wall -Wextra -std=c99 -O2 -c font_manager.c -o font_manager.o
gcc -Wall -Wextra -std=c99 -O2 -c controls.c -o controls.o

# Create executable
gcc -mwindows -o vga-font-editor.exe main.o font_manager.o controls.o resource.o -lgdi32 -luser32 -lkernel32 -lcomdlg32 -lcomctl32 -luxtheme -ldwmapi

• Click on any character in the grid (left panel) to select it for editing
• Selected character is highlighted with blue background
• Characters under mouse cursor are shown with light gray background

• Left click: Set pixels (black)
• Right click: Clear pixels (white)
• Dragging: Multi-pixel editing by holding mouse button
• Zoom: Use + and - buttons in toolbar for zoom in/out

• Ctrl+O: Open font file
• Ctrl+S: Save font file
• Ctrl+C: Copy character
• Ctrl+V: Paste character
• Ctrl+Z: Undo
• Ctrl+Y: Redo
• Delete/Backspace: Clear character
• F1: About dialog

• File → Open: Load various VGA font formats (VGAF, PSF1/PSF2, Raw binary)
• File → Save: Save font in VGAF format
• Export: C header file export (planned feature)
• File format is automatically detected and shown in status bar
• Unsaved changes are indicated with "*" in window title

Editor's native format:

• 16-byte header: Format identification and metadata
• 4096 bytes font data: 256 characters × 16 bytes
• Total file size: 4112 bytes
• Character size: 8 pixels width × 16 pixels height
• Data structure: Each byte represents one pixel row (MSB = leftmost pixel)

• Raw Binary: Raw VGA font data (4096 bytes)

• VGAF (.vgaf): Editor's native format (saving)
• C Header (.h): Export font data as C array (planned feature)

The editor supports the full PC/VGA character set (0-255):

• 0-31: Control characters and symbols
• 32-126: Standard ASCII printable characters
• 127-255: Extended ASCII and graphics characters

• Language: C99 standard
• GUI Framework: Win32 API
• Graphics: GDI (Graphics Device Interface)
• Theming: Modern appearance with UxTheme API
• Controls: Common Controls 6.0

• Efficient pixel rendering
• Redrawing only changed areas
• Memory management optimizations
• Responsive UI updates

• Material Design color palette
• Smooth hover animations
• High-DPI support
• Visual styles integration
• Consistent spacing and typography

vga-font-editor/
├── main.c              # Main program and window management
├── font_manager.c      # Font loading/saving and data processing
├── controls.c          # Custom UI controls
├── vga_font_editor.h   # Header file and definitions
├── resource.rc         # Windows resources
├── vga_font_editor.manifest # Modern UI manifest
└── Makefile           # Build automation

Bug reports and enhancement requests are welcome!

1. Fork the project
2. Create a feature branch (git checkout -b feature/new-feature)
3. Commit your changes (git commit -am 'Add new feature')
4. Push to the branch (git push origin feature/new-feature)
5. Create a Pull Request

Copyright (c) 2025 Erdem Ersoy (eersoy93)

This project is licensed under the GPLv3 License - see the LICENSE file for details.

• ✅ Basic VGA font editing
• ✅ Modern UI design
• ✅ Undo/Redo system
• ✅ Multiple file format support
• ✅ Enhanced keyboard shortcuts
• ✅ Zoom and toolbar features
• ✅ DPI awareness support