Description
Creates the root node for the BBjTree control.
Syntax
| Return Value |
Method |
| void |
setRoot(int ID, String text) |
Parameters
| Parameter |
Description |
| ID |
Specifies the ID of the root node. |
| text |
Specifies the text label of the root node. |
Return Value
None.
Remarks
All trees must have only one root node. The root must be set before any other nodes are added.
Example
rem 'Create the root node of 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 '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
|
See Also
BBjTree::getRoot
BBjAPI
BBjSysGui
BBjControl
BBjWindow
See the BBj Object Diagram for an illustration of the relationship between BBj Objects.