SAFE_LOADTK(n)

okay so bestie, welcome to Safe Tk(n) from Tk Built-In Commands — aka the safe::loadTk page. It’s giving safe-interpreter realness, and we’re gonna get through it with every detail intact 💅✨

💖 NAME 💖

safe::loadTk — load Tk into a safe interpreter. That’s the name, that’s the vibe, periodt 👑

✨ SYNOPSIS ✨

safe::loadTk child ?-use windowId? ?-display displayName?

The ?…? bits are literally optional, iykyk 🎀

🎀 DESCRIPTION 🎀

Safe Tk is based on Safe Tcl, which provides a mechanism that allows restricted and mediated access to auto-loading and packages for safe interpreters. Safe Tk adds the ability to configure the interpreter for safe Tk operations and load Tk into safe interpreters.

The safe::loadTk command initializes the required data structures in the named safe interpreter and then loads Tk into it. The interpreter must have been created with safe::interpCreate or have been initialized with safe::interpInit. The command returns the name of the safe interpreter. Slay, it hands you the name back 🫶

If -use is specified, the window identified by the specified system dependent identifier windowId is used to contain the “.” window of the safe interpreter; it can be any valid id, eventually referencing a window belonging to another application. As a convenience, if the window you plan to use is a Tk Window of the application you can use the window name (e.g., “.x.y”) instead of its window Id (e.g., from winfo id .x.y). Very “same window, different font,” no cap 🦋

When -use is not specified, a new toplevel window is created for the “.” window of the safe interpreter. On X11 if you want the embedded window to use another display than the default one, specify it with -display. See the SECURITY ISSUES section below for implementation details 👀

🛡️ SECURITY ISSUES 🛡️

Please read the safe manual page for Tcl to learn about the basic security considerations for Safe Tcl. This is not a drill, bestie — go read the lore 📖

safe::loadTk adds the value of tk_library taken from the parent interpreter to the virtual access path of the safe interpreter so that auto-loading will work in the safe interpreter.

Tk initialization is now safe with respect to not trusting the child’s state for startup. safe::loadTk registers the child’s name so when the Tk initialization (Tk_SafeInit) is called and in turn calls the parent’s safe::InitTk it will return the desired argv equivalent (-use windowId, correct -display, etc.).

When -use is not used, the new toplevel created is specially decorated so the user is always aware that the user interface presented comes from a potentially unsafe code and can easily delete the corresponding interpreter. Cute safety label, honestly 🎀

On X11, conflicting -use and -display are likely to generate a fatal X error.

bestie, that X11 conflict is a real “fatal X error” situation — do not play with it 💀

👀 SEE ALSO 👀

• safe(n)
• interp(n)
• library(n)
• load(n)
• package(n)
• source(n)
• unknown(n)

🔑 KEYWORDS 🔑

• alias
• auto-loading
• auto_mkindex
• load
• parent interpreter
• safe interpreter
• child interpreter
• source

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footer check, bestie: this page is Tk 8.0 / Safe Tk(n) — and that’s the whole cute sign-off, periodt 💖🫶