blt_treegetnode(3) [debian man page]

Blt_TreeGetNode(3)					      BLT Library Procedures						Blt_TreeGetNode(3)

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NAME

       Blt_TreeGetNode - Finds the node from the ID.

SYNOPSIS

       #include <bltTree.h>

       Blt_TreeNode
       Blt_TreeGetNode(tree, number)

ARGUMENTS

       Blt_Tree       tree     (in)	 Tree containing the requested node.

       unsigned int   number   (in)	 Serial number of the requested node.
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DESCRIPTION

       This procedure returns a node in a tree object based upon a give serial number.	The node is searched using the serial number.

       The arguments are as follows:

       tree	 The tree containing the requested node.

       number	 The serial number of the requested node.

RETURNS

       The node represented by the given serial number is returned.  If no node with that ID exists in tree then NULL is returned.

EXAMPLE

       The following example gets the node from a serial number.

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

KEYWORDS

       Tcl_TreeCreateNode, Tcl_TreeDeleteNode

BLT
									2.4							Blt_TreeGetNode(3)

Blt_TreeDeleteNode(3)					      BLT Library Procedures					     Blt_TreeDeleteNode(3)

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NAME

       Blt_TreeDeleteNode - Deletes a node and its descendants.

SYNOPSIS

       #include <bltTree.h>

       Blt_TreeNode
       Blt_TreeDeleteNode(tree, node)

ARGUMENTS

       Blt_Tree       tree   (in)      Tree containing the node.

       Blt_TreeNode   node   (in)      Node to be deleted.
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DESCRIPTION

       This procedure deletes a given node and all it descendants from a tree data object.

       The arguments are as follows:

       tree	 The tree containing the parent node.

       node	 Node  to  be  deleted.  The node and its descendant nodes are deleted.  Each node's data values are deleted also.   The reference
		 count of the Tcl_Obj is decremented.

       Since all tree objects must contain at least a root node, the root node itself can't be deleted unless the tree is released and	destroyed.
       Therefore you can clear a tree by deleting its root, but the root node will remain until the tree is destroyed.

RETURNS

       Always returns TCL_OK.  Errors generated in a notification callbacks are backgrounded (see Tcl_TreeCreateNotifyHandler).

EXAMPLE

       The following example deletes the root node.

	      Blt_TreeNode root;

	      root = Blt_TreeRootNode(token);
	      Blt_TreeDeleteNode(token, root);

NOTIFICATIONS

       Blt_TreeDeleteNode  can	trigger  tree notify events.  You can be notified whenever a node is deleted by using the Blt_TreeCreateNotifyHan-
       dler.  A callback routine is registered that will be automatically invoked whenever a node is deleted via Blt_TreeDeleteNode to the tree.

KEYWORDS

       tree, token

BLT
									2.4						     Blt_TreeDeleteNode(3)