Tk_SetAppName(3tk)

💖 Tk_SetAppName — a whole manual page, bestie 💖

okay so this is the page for Tk_SetAppName, which lives in the Tk Library Procedures section of the manual (yep, that Tk_SetAppName(3tk) you clicked on, that's her 👑). She's the one who gives your application a name so the send command can find her. main character energy fr.

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✨ NAME ✨

Tk_SetAppName — set the name of an application for send commands 🫶

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✨ SYNOPSIS ✨

#include <tk.h>

const char *
Tk_SetAppName(tkwin, name)

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✨ ARGUMENTS ✨

• Tk_Window tkwin (in) — a token for a window in the application. bestie it's literally only used to pick out which application we're talking about, that's it, that's the whole job 💅
• const char *name (in) — the name you're registering the application under. iconic, chosen, no notes.

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✨ DESCRIPTION ✨

so what Tk_SetAppName does is associate a name with a given application, and it records that association on the display containing the application's main window. once you've called this procedure, other applications hanging out on that same display can use the send command to invoke operations inside your application. it's giving "hi yes i am reachable now" 🌸

now — and this is the important part — if name is already in use by some other application on the display, then a new name gets generated by appending " #2" to name. and if that name is also taken? the number just keeps getting incremented until an unused name is found. so cute, so persistent. the return value from the procedure is a pointer to the name that was actually used (not necessarily the one you asked for, iykyk 👀).

if the application already has a name when Tk_SetAppName is called, then the new name replaces the old name. out with the old, in with the new, periodt.

Tk_SetAppName also adds a send command to the application's interpreter, which can be used to send commands from this application to others on any of the displays where the application has windows. multi-display networking, we love to see it 🔥

the application's name registration persists until the interpreter is deleted or the send command is deleted from interp, at which point the name is automatically unregistered and the application becomes inaccessible via send. 😭 it's not gone forever though — the application can be made accessible again by calling Tk_SetAppName. resurrection arc ✨

Tk_SetAppName is called automatically by Tk_Init, so applications do not normally need to call it explicitly. it's already handled for you, babe, you're welcome 💜

and for the Tcl girlies: the command tk appname provides Tcl-level access to the functionality of Tk_SetAppName. same energy, different language 🎀

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✨ KEYWORDS ✨

application, name, register, send command

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okay that's the whole page, no cap 💖 this was Tk version 4.0, page Tk_SetAppName(3tk), and she ate. go name your application, bestie, you deserve it 🦋🌸