
BBjWindow::addListButton
Description
Creates a list button control in the BBjWindow.
Syntax
Return Value |
Method |
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addListButton(int ID, int x, int y, int width, int height, string initialContents) |
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addListButton(int ID, int x, int y, int width, int height, string initialContents, string flags) |
Parameters
Variable |
Description |
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ID |
Control ID number. It must be an integer between 1 and 32767 and be unique within a given top-level window. |
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x |
Horizontal position of the upper-left corner of the control in current units. |
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y |
Vertical position of the upper-left corner of the control in current units. |
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width |
Width of the control in current units. |
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height |
Height of the control in current units. |
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initialContents |
Line feed separated strings containing the initial contents of the list. |
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flags |
Control flags, as follows:
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Return Value
Returns the created BBjListButton object.
Remarks
The list of choices available may be modified only under program control. The values in the list may be accessed using a zero-based list index integer. Unlike the list edit control, it does not allow a value to be entered manually. As the user types, the first matching selection in the list is placed in the edit area. Various keys may be used to navigate in the list including the Home (first selection), End (last selection), Page Up and Page Down, and the arrow keys.
Example
addListButton Example
REM Add a list button control to a window
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$="BBj Window"
REM Set the current context
mySysGui!.setContext(0)
REM Create a window
myWindow! = mySysGui!.addWindow(X,Y,WIDTH,HEIGHT,TITLE$)
REM Add a list button control to the window
myListButton! = myWindow!.addListButton(101,50,100,90,60,"",$0000$)
REM Add items into the list button
FOR I=1 TO 4
ITEM$="ITEM " + STR(I)
myListButton!.addItem(ITEM$)
NEXT I
REM Register the CALLBACK routines
CALLBACK(ON_LIST_SELECT,LIST_ITEM_SELECTED,mySysGui!.getContext(),myListButton!.getID())
CALLBACK(ON_CLOSE,APP_CLOSE,mySysGui!.getContext())
REM Process Events
PROCESS_EVENTS
REM Callback routine called when the user selects an item in the list button
LIST_ITEM_SELECTED:
REM Display a message with the select list button item
MESSAGE$="The item selected is: " + STR(myListButton!.getItemAt(myListButton!.getSelectedIndex()))
LET X=MSGBOX(MESSAGE$)
RETURN
REM Callback routine called when the user closes the application window
APP_CLOSE:
RELEASE
RETURN
See Also
See the BBj Object Diagram for an illustration of the relationship between BBj Objects.