Synchronet v3.19b-Win32 (install) has been released (Jan-2022).

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UIFC (User InterFaCe) is the text mode full-screen user interface library used by SCFG, echocfg, and others. It was originally inspired by the text mode user interface for NetWare 2.x server management utilities for DOS (e.g. SYSCON), and was written from scratch by Digital Man.



The UIFC library uses the Synchronet Console I/O Library (CIOLIB).

Windows Console Mode

Windows Terminal

UIFC apps are often not pretty when run from within Windows Terminal (wt.exe). To use the legacy Windows Console Host instead, run conhost.exe and pass the path and arguments to the UIFC application on the command-line.



In most environments, UIFC applications support mouse input:

  • Left-click to select a menu option
  • Left-click outside of active window to move backwards
  • Right-click to move backwards/exit
  • Left-click [■] to move backwards/exit
  • Left-click [?] for a context-sensitive help screen
  • Left-click to scroll down one page
  • Left-click to scroll up one page


Operation Keys
Move selection bar Up and Down arrows, Home (^B), End (^E), Page-up (^U), Page-down (^D)
Select item Enter
Edit item F2
Insert item Insert or +
Delete item Delete or -
Exit ESC or Backspace (^H)
Copy item ^C or Ctrl-Insert or F5
Cut item ^X or Shift-Delete
Paste item ^V or Shift-Insert or F6

Development Documentation

C Interface


The C API is exposed through the header file: uifc.h.


The 32-bit port of the DOS version, initialized using uifcini32(). This is the best supported version and is reccomended for effectively every use.


The command-line version using standard I/O, initialized using uifcinix(). This version is a “last resort” type of implementation. Many features don't work as intended and it can be difficult to navigate the menus. it is intended to work though.

Javascript Interface

See JavaScript Object Reference

When using uifc.list, you can pass the WIN_SAV option, along with a context object to preserve the menu selection index.

The context object is created as follows:

var ctx = new uifc.list.CTX(
  0, // current
  0, // bar
  0, // left
  0, // top
  0 // width

UIFC List Window Flags

Flag Description
WIN_ORG Original menu, destroy valid screen area
WIN_SAV Save existing text and replace when finished (use with context object)
WIN_ACT Menu remains active after a selection
WIN_INSACT Remains active after insert key
WIN_DELACT Remains active after delete key
WIN_CHE Stay active after escape if changes
WIN_EXTKEYS Return on any keypress. Return value is -2 - keyvalue
WIN_POP Exit the list as though ESC was pressed. For use after WIN_EXTKEYS or WIN_DYN
WIN_SEL Exit the list as though ENTER was pressed. For use after WIN_EXTKEYS or WIN_DYN
WIN_ESC Screen is active when escape is hit
WIN_EDITACT Remain active after edit key
WIN_L2R Center the window based on width
WIN_T2B Center the window based on height
WIN_RHT Place window against right side of screen
WIN_MID Place window in middle of screen
WIN_BOT Place window against bottom of screen
WIN_FIXEDHEIGHT Use light_height from uifc struct
WIN_NOBRDR Do not draw a border around the window
WIN_IMM Draw window and return immediately
WIN_INACT Draw window inactive, intended for use with WIN_IMM
WIN_DYN Dynamic window, return at least every second
WIN_REDRAW Force redraw on dynamic window
WIN_NODRAW Force not to redraw on dynamic window
WIN_INS Allow user to use insert key
WIN_DEL Allows use to use delete key
WIN_COPY Allows F5 to Get/Copy a menu item
WIN_PASTE Allows F6 to Put/Paste a menu item
WIN_XTR Add extra line at end for inserting at end
WIN_CUT Allow Ctrl-X/Cut a Menu Item
WIN_EDIT Allow F2 to edit a menu item
WIN_PASTEXTR Allow paste into extra (blank) item
WIN_HLP Parse Help Codes
WIN_PACK Pack text in window (no padding)
WIN_FAT Do not pad outside borders
WIN_UNGETMOUSE If the mouse is clicked outside window, put mouse even back into even queue

UIFC Input Keyboard Modes

Flag Description
K_NONE No special behavior
K_UPPER Converts all letters to upper case
K_UPRLWR Upper/lower case automatically
K_NUMBER Allow numbers only
K_MSG Allows Ctrl-A codes
K_EDIT Edit string passed
K_ALPHA Only allow alphabetic characters
K_SCANNING UPC Scanner is active, return on '%'
K_LEFTEXIT Allow exit from getstr() with backspace
K_DECIMAL Allow floating point numbers only
K_DEUCEEXIT Return on up/down/F2
K_MOUSEEXIT Returns when mouse is clicked outside of input area (not window)
K_PASSWORD Do not display text while editing
K_FIND Don't set the “changes” flag

UIFC List Return Input Masks

Use these masks to check for specific inputs.

Mask Description
MSK_ON Use when checking input (see example)
MSK_OFF Use when checking input (see example)
MSK_INS Insert key pressed, or ENTER pressed on empty entry
MSK_DEL Delete key pressed
MSK_COPY Item copied (Ctrl-C)
MSK_CUT Item cut (Ctrl-X)
MSK_PASTE Item pasted (Ctrl-V)
MSK_EDIT Item was selected for edit (F2)

Example JavaScript Usage:

if ((selection & MSK_ON) == MSK_DEL) {
    // delete key pressed
    selection &= MSK_OFF;