Blt_TreeGetNode(3)

💖 Blt_TreeGetNode — from the BLT Library Procedures 💖

okay bestie, so this one lives in the BLT Library Procedures section of the manual (that's the <cyan>3</cyan> vibe, iykyk), and it's genuinely one of the most useful little gremlins in the whole tree API. let's get into it 🫶

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✨ NAME ✨

Blt_TreeGetNode — finds the node from the ID. that's it, that's the whole job, and she does it flawlessly 💅

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✨ SYNOPSIS ✨

#include <bltTree.h>

Blt_TreeNode
Blt_TreeGetNode(tree, number)

like yes, that's the whole thing. two args, one node back. no cap.

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✨ ARGUMENTS ✨

• Blt_Tree tree (in) — the tree that's holding the node you're looking for. your home base 🏠
• unsigned int number (in) — the serial number of the node you want. the lil ID tag bestie 🎀

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✨ DESCRIPTION ✨

okay so here's the tea: this procedure returns a node in a tree object based upon a give serial number. the node is searched using the serial number — that's literally the whole search strategy, it just goes and finds it by number. iconic, efficient, no notes ⭐

and the arguments, one more time, in cute little detail:

• tree — the tree containing the requested node.
• number — the serial number of the requested node.

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✨ RETURNS ✨

the node represented by the given serial number is returned. 🎉

but listen: if no node with that ID exists in tree, then NULL is returned. so please, for the love of everything, check for NULL. don't be the girl who dereferences a NULL and then cries in the group chat 😭

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✨ EXAMPLE ✨

here's the moment you've all been waiting for — getting a node from a serial number, the whole ritual:

unsigned int number;
Blt_TreeNode node;
Blt_TreeToken token;
...
node = Blt_TreeGetNode(token, number);
if (node == NULL) {
    printf("no node with ID %d exists\n", number);
} else {
    printf("node found: label is %s\n", Blt_TreeNodeLabel(node));
}

see how she checks node == NULL first? that's the self-care. that's the main character energy. protect your program, protect your peace 🦋

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✨ KEYWORDS ✨

• Tcl_TreeCreateNode
• Tcl_TreeDeleteNode

(go read those next, they're the whole friend group 🌸)

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so yeah — Blt_TreeGetNode finds a node by its serial number, hands it to you, or hands you NULL and lets you deal with it. that's the whole page, and honestly? she ate. 👑

this little love letter comes to you from BLT 2.5 — version 2.5, the Blt_TreeGetNode(3) page, mwah, bye bestie 💜✨