CPP_RAD_Ejercicio47

/*ej47_TreeView
Ejemplo del control TreeView */
#include <radc++.h>

Form      form1("Tree View - RAD C++ Ejemplo");
Label    label1("Click algun nodo",-1,50,20,300,20,form1);

TreeView tree("",AUTO_ID,50,50,300,100,form1); //create treeview

Label    label2("Agregar nuevo nodo bajo el seleccionado",-1,50,170,300,20,form1);
TextBox   text1("Nuevo titulo de nodo",AUTO_ID,50,195,300,20,form1);
Button btn_add1("Agregar bajo seleccionado",AUTO_ID,50,220,110,25,form1);
Button btn_add2("Agregar en root",AUTO_ID,170,220,70,25,form1);
Button  btn_rem("Remover seleccionado",AUTO_ID,250,220,100,25,form1);

TreeNode root,node1,node2;

FormProcedure proc(FormProcArgs);//prototype of form procedure

rad_main()

    form1.procedure = proc;

    //NOTE1: 3rd argument of function addNode is the unique Id of node
    //       which can later be used to track node.

    //NOTE2: rootNode is predefined, which means no parent node.

    //add two nodes in root
    root =  tree.addNode(rootNode,"Un Leon",      1);
            tree.addNode(rootNode,"Un Tigre",     2);

    //add node under the node 'root'
    node1= tree.addNode(root,"Un Elefante",      3);
    //add node under the node 'node1'
    node2= tree.addNode(node1,"Un Elefante Azul", 4);

    //expand the root node
    root.expand();  //use node.collapse() to close an expanded node

rad_end()

FormProcedure proc(FormProcArgs) { //implementation of form procedure
    ON_CLOSE() Application.close();

    //some node selected
    ON_NODE_CHANGE(tree) {
        label1.caption = tree.selectedNodeText;
        //to track by Id use
        //if(tree.selecteNodeId == 4) //assumed 4 as your node Id
    }

    //check specific node if it has been selected, e.g. node1
    ON_NODE_SELECT(tree, node1) {
        label1.caption = "'node1' ha sido clickeado";
    }

    //add new node under selected one (at runtime)
    ON_COMMAND_BY(btn_add1) {
        //first get the selected node
        TreeNode tempNode = tree.selectedNode;
        tempNode.addNode(text1.text,AUTO_ID);
        tempNode.expand();
    }

    //add new node in root
    ON_COMMAND_BY(btn_add2) {
        root = tree.addNode(rootNode,text1.text,AUTO_ID);
    }

    //remove the selected node
    ON_COMMAND_BY(btn_rem) {
        if(tree.total == 0) return 0; //no node in treeview
        //first get the selected node
        TreeNode tempNode = tree.selectedNode;
        //now remove it
        tempNode.remove();
    }
    return 0;
}