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Frozen Fish 1: Amiga
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treetool.lha
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TreeTool
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TreeToolExample.c
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C/C++ Source or Header
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1993-10-07
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2KB
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73 lines
#include "TreeTool.h"
#include <stdio.h>
/* Some prototypes. */
void displayFunc(NODE_HANDLE);
void killFunc(struct someData *);
struct someData
{
int a,b,c;
char *string;
}
main()
{
NODE_HANDLE a_tree=NULL;
struct someData data1={1,2,3,"Root node."},data2,data3={7,8,9,"Sub-child node."};
struct someData *ptrDat2;
/* We create our tree root. */
a_tree=tt_NewNode(NULL,NULL);
/* Let's create a child. */
tt_NewNode(a_tree,&data2);
/* Create a child of the child. */
tt_NewNode(tt_GetFirstSon(a_tree),&data3);
/* Set the root node pointer. */
tt_SetNodeData(a_tree,&data1);
/* Get the user data pointer to the child node. */
ptrDat2=tt_GetNodeData(tt_GetFirstSon(a_tree));
/* We can now fill it with "meaningfull" information. */
if( ptrDat2 )
{
ptrDat2->a=4;
ptrDat2->b=5;
ptrDat2->c=6;
ptrDat2->string="Child node.";
}
/* We will use our displayFunc to recursively display the message */
/* in each node. */
tt_ApplyFunction(a_tree,displayFunc);
printf("\n");
/* We kill all the allocated nodes before quitting. */
/* We could just have used tt_KillNode(a_tree,NULL) because data is */
/* static. */
tt_KillNode(a_tree,killFunc);
}
void displayFunc(NODE_HANDLE node)
{
struct someData *ptrData;
if( ptrData=tt_GetNodeData(node) )
{
printf("This node contains the message: %s\n",ptrData->string);
}
}
void killFunc(struct someData *ptrData)
{
/* Actually does nothing but could do something if dynamic data was */
/* used. */
printf("Killing the node containing message: %s\n",ptrData->string);
}