Installs Atmel WinCUPL 5.30.4 — the classic version — under Wine, with a menu entry, desktop icon and the program's own icon.
WinCUPL is a Visual Basic 6 program from 2014, and Wine ships none of the pieces it depends on. Installed by hand it fails five times over, each one only appearing once the previous is satisfied, and the first two say nothing at all:
| what happens | what is missing |
|---|---|
| double-click does nothing, no window, no error | MSVBVM60.DLL — the VB6 runtime |
| "runtime error 339" | COMCTL32.OCX |
| same error opening any file | COMDLG32.OCX |
| "Dwsbc32.ocx missing" | DWSBC32.OCX, plus DWSPY32.DLL and MFC40.DLL before it will even register |
a .PLD opens into nothing; no Edit/Run/Utilities menus |
RICHTX32.OCX — the editor control — and TABCTL32.OCX, Comct232.ocx |
| "Unable to read environment variable: LIBCUPL" | the compiler's library path |
The control list was not found by clicking until it stopped complaining: it
came from reading the controls named inside Wincupl.exe, which lists all six
at once.
The VB6 runtime does not include these. It is only the language runtime —
the virtual machine that executes VB6 P-code. The controls shipped separately
with Visual Studio 6 and were licensed individually, so each application's
installer carried the ones it used. DWSBC32.OCX is not Microsoft's at all;
it is a third-party Desaware control.
It needs a 64-bit Wine prefix. WinCUPL is a 32-bit program, so a win32
prefix looks like the obvious choice. Built that way the process starts, sits
idle at 0% CPU and never draws a window. In a 64-bit prefix the 32-bit
runtimes land in syswow64 and WoW64 runs it perfectly.
LIBCUPL must name the library file, ...\Shared\cupl.dl, not the folder
holding it. Pointed at the folder, the compiler fails with
could not open: C:\Wincupl\Shared, which reads like a permissions problem
and is not one.
curl -fsSL https://raw.githubusercontent.com/exxosuk/wincupl-mx-linux/master/install.sh | bash
That downloads this repository and runs the installer. Nothing else is fetched, nothing needs mounting, and WinCUPL appears in the application menu when it finishes.
./wincupl-install.sh install # uses the bundled copy
./wincupl-install.sh install /path/to/Wincupl # or one of your own
./wincupl-install.sh uninstall
ORGANIZATION="Your Name" ./wincupl-install.sh install
It is self-contained: everything it needs ships beside it, nothing is read
from a Windows partition, and it installs into its own Wine prefix at
~/.wine-wincupl so it cannot disturb anything else.
WinCUPL asks for an organisation and a serial number on first run. The serial is free and published by Microchip: 60008009. The installer writes it in, so it never asks. It lives in the registry under the name of the company that wrote CUPL before Atmel bought them:
HKCU\Software\Logical Devices\WinCupl\5.0\Settings
Organization, SerialNo
wincupl-files/— WinCUPL 5.30.4, from Microchip's own download: https://ww1.microchip.com/downloads/en/DeviceDoc/awincupl.exe.zip (linked from https://www.microchip.com/en-us/development-tool/wincupl). It is bundled rather than downloaded so this keeps working if that URL moves, as Winamp's did.deps/—DWSBC32.OCX,DWSPY32.DLL,MFC40.DLL,COMCT232.OCX. These came with a Windows installation and are not in winetricks. Everything else Microsoft ships is fetched by winetricks at install time rather than kept here.wincupl.png— the CUPL logo, extracted fromWincupl.exe.
Microchip released WinCUPL II v1.1.0 in February 2026 — a .NET rewrite for Windows 10/11, free, no serial, and it runs under Wine with no shims at all. It is a completely different interface. This installer is for people who want the program they know.
MX Linux 23 (KDE), Wine 9.21.