Need help on PainBox Component(Canva s) and binary tree

[DemonFox]

Hello to all
I need to merge my code with the PaintBox component.
the question is:
i have a form with edit box where you put the number (data) of the node you want to insert ant it comes to the paintbox in optical version it creates
a rectangle like this
PaintBox1->Canvas->Rectangle(node widthx1,nodehei gthy1,nodewidth x2,nodeheigthy2 );
and i want every time i press the insert button a rectangle to be created
i am to the point that i can create only the first node on 1st and 2nd level then nothing!!!!!
the code for inserting the node is:

void tree::insert_node(PTR *pt,int x)
{
    PTR t;
    t=*pt;
    int pclh,pclw;
    int nodeheigthy1=0,nodeheigthy2=0,prevnodeheigthy1,prevnodeheigthy2;
    int nodewidth,nodewidthx1,nodewidthx2;
    bool type=0;
    pclh=Form1->PaintBox1->ClientHeight;
    pclw=Form1->PaintBox1->ClientWidth;
    Form1->Edit4->Text=pclh;
    Form1->Edit5->Text=pclw;
    nodewidth=pclw/2;
    nodeheigthy1=nodeheigthy1+10;
    nodeheigthy2=nodeheigthy2+50;
    nodewidthx1=nodewidth+20;
    nodewidthx2=nodewidth-20;
if (t==NULL)
    {
t=new treenode;
        t->data=x;
        t->left=NULL;
        t->right=NULL;
        Form1->PaintBox1->Canvas->Rectangle(nodewidthx1,nodeheigthy1,nodewidthx2,nodeheigthy2);
    }
    else
        if (x<t->data)
        {
            nodewidthx1=nodewidthx1-40;
            nodeheigthy1=nodeheigthy1+80;
            nodewidthx2=nodewidthx2-40;
            nodeheigthy2=nodeheigthy2+80;
            insert_node(&(t->left),x);
            Form1->PaintBox1->Canvas->Rectangle(nodewidthx1,nodeheigthy1,nodewidthx2,nodeheigthy2);
        }
    else
    {
        nodewidthx1=nodewidthx1+40;
        nodeheigthy1=nodeheigthy1+80;
        nodewidthx2=nodewidthx2+40;
        nodeheigthy2=nodeheigthy2+80;
        insert_node(&(t->right),x);
        Form1->PaintBox1->Canvas->Rectangle(nodewidthx1,nodeheigthy1,nodewidthx2,nodeheigthy2);
    }
        *pt=t;
}
 

if anyone knows plaese help i have stuck for two weeks
it is for my exam.
the result i want to achive is to have a graphical aperriance of the tree in the
PaintBox. i anyone want me to sent the whole project pm me.
Sorry i don t know how to add tags and for my english.
thanks in advance.

[DemonFox]

NO ONE???????????? ????
please help