BBjTree::removeNode

Description

Removes a node from the BBjTree control.

Syntax

Return Value	Method
void	removeNode(int ID)

Parameters

Variable	Description
ID	Specifies the ID of the node to be removed.

Return Value

None.

Remarks

If the specified node is a parent node, then it will also remove all of its descendants.

Example

REM Remove a node (and all it's descendants) from 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$[ARTIST,0])
        SONG_PARENT_ID=NODE_ID
        FOR SONG=1 TO 4
        NODE_ID=NODE_ID+1
        REM Add the songs as child nodes of the Artists on the tree control
        myTree!.addNode(NODE_ID,SONG_PARENT_ID,MUSIC$[ARTIST,SONG])
        NEXT SONG
NEXT ARTIST

REM Remove a node (Willie Nelson) (and all it's descendants - all Willie Nelson's
REM songs) from a tree control
myTree!.removeNode(SONG_PARENT_ID)

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
RETURN