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REM Get Node ID of Expanded Node
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$[ARTIST,0])
SONG_PARENT_ID=NODE_ID
FOR SONG=1 TO 4
NODE_ID=NODE_ID+1
REM Add the
songs as child nodes of the Artists on the tree control
myTree!.addNode(NODE_ID,SONG_PARENT_ID,MUSIC$[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())
CALLBACK(ON_TREE_EXPAND,EXPANDED,mySysGui!.getContext(),myTree!.getID())
REM Process Events
PROCESS_EVENTS
REM Callback routine called when the user closes the application
window
APP_CLOSE:
RELEASE
RETURN
EXPANDED:
REM get the Node ID of the expanded node
ID=myTree!.getExpandedNode()
print "Node ID ",ID
RETURN
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