BBjTree::addExpandableNode

Description

Adds an expandable child node to a parent node in the BBjTree control.

Syntax

Return Value	Method
void	addExpandableNode(int `childID`, int `parentID`, String `text`)

Parameters

Parameter	Description
childID	Specifies the ID of the child node.
parentID	Specifies the ID of the parent node.
text	Specifies the label of the child node.

Return Value

None.

Remarks

The child node will become the last node in its parent's child node list. The node will always appear as an expandable node, even if it has no children.

Example

rem 'Add expandable nodes to a tree control

rem 'Obtain the instance of the BBjAPI object
let myAPI! = BBjAPI()

rem 'Open the SysGui device
SYSGUI = UNT
OPEN (SYSGUI) "X0"

rem 'Obtain the instance of the BBjSysGui object
let mySysGui! = myAPI!.getSysGui()

rem 'Set addWindow param values
X = 10
Y = 10
WIDTH = 200
HEIGHT = 200
TITLE$="BBj Window"

rem 'Set the current context
mySysGui!.setContext(0)

rem 'Create a window that is initially invisible
myWindow! = mySysGui!.addWindow(X,Y,WIDTH,HEIGHT,TITLE$,$00000012$)

rem 'Create the tree control on the window
myTree! = myWindow!.addTree(101,0,0,WIDTH,HEIGHT)

rem 'Create root node of tree
PARENT_ID = 0
myTree!.setRoot(PARENT_ID,"Musical Tree")

rem 'Create array to hold ARTIST and songs
DIM MUSIC$[2,4]
MUSIC$[0,0]="The Beatles"
MUSIC$[0,1]="Hey Jude",MUSIC$[0,2]="Let It Be",MUSIC$[0,3]="Twist and Shout",MUSIC$[0,4]="Yesterday"
MUSIC$[1,0]="Paul Simon"
MUSIC$[1,1]="Bridge Over Troubled Waters",MUSIC$[1,2]="Hearts and Bones",MUSIC$[1,3]="Kathy's Song",MUSIC$[1,4]="The Sound of Silence"
MUSIC$[2,0]="Willie Nelson"
MUSIC$[2,1]="Always On My Mind",MUSIC$[2,2]="Getting Over You",MUSIC$[2,3]="Old Fords and Natural Stone",MUSIC$[2,4]="This Morning"

rem 'Add nodes to tree
FOR ARTIST = 0 TO 2
    NODE_ID = NODE_ID+1

    rem 'Add the artists as expandable nodes on the tree control
    myTree!.addExpandableNode(NODE_ID,PARENT_ID,MUSIC$[ARTIST,0])
    SONG_PARENT_ID = NODE_ID
    FOR SONG = 1 TO 4
        NODE_ID = NODE_ID+1
        myTree!.addNode(NODE_ID,SONG_PARENT_ID,MUSIC$[ARTIST,SONG])
    NEXT SONG
NEXT ARTIST

rem 'Show the window
myWindow!.setVisible(mySysGui!.TRUE)

rem 'Register the CALLBACK routines
CALLBACK(ON_CLOSE,APP_CLOSE,mySysGui!.getContext())

rem 'Process Events
process_events

rem 'Callback routine called when the user closes the application window
APP_CLOSE:
release