Help me on toolbar problem

[Frank Benoit]

import dwt.widgets.Widget;
import dwt.widgets.Shell;
import dwt.widgets.Display;
import dwt.widgets.Menu;
import dwt.widgets.MenuItem;
import dwt.widgets.ToolBar;
import dwt.widgets.ToolItem;
import dwt.widgets.MessageBox;
import dwt.DWT;
import dwt.events.SelectionEvent;
import dwt.events.SelectionListener;
import tango.io.Stdout;

public class Form {
     private:
     Display display;
     Shell shell;
     Menu menu;
     MenuItem checkItem;
     ToolBar bar;
     ToolItem checkBarItem;
     public:
     this() {
         initializeComponents;
     }
     void initializeComponents() {
         display=new Display;
         shell =new Shell(display);
         shell.setSize(500,500);
         shell.setText("Example 01");
         //ToolBar:
         bar=createToolBar(checkBarItem);
         //main menu:
         menu=createMainMenu;
         shell.setMenuBar(menu);
         shell.open;
         while(!shell.isDisposed) {
             if(!display.readAndDispatch)
             display.sleep;
         }
         display.dispose;
     }
     private:
     Menu createMainMenu() {
         //Menu-->Option-->Checkd Option
         menu=new Menu(shell,DWT.BAR);
         final MenuItem options=new MenuItem(menu,DWT.CASCADE);
         options.setText("Options");
         final Menu optionMenu=new Menu(shell,DWT.DROP_DOWN);
         final MenuItem checkItem=new MenuItem(optionMenu,DWT.CHECK);
         checkItem.setText("Checked Option");
         checkItem.setAccelerator(DWT.CTRL+'C');
         checkItem.setSelection(true);
         options.setMenu(optionMenu);
         checkItem.addSelectionListener(new 
checkMenuClickListener(checkItem));
         return menu;
     }
     ToolBar createToolBar(ref ToolItem checkBarItem) {
         final ToolBar bar =new ToolBar(shell,DWT.HORIZONTAL);
         bar.setSize(300,70);
         bar.setLocation(0,0);
         checkBarItem=new ToolItem(bar,DWT.CHECK);
         checkBarItem.setText("Check Bar");
         checkBarItem.addSelectionListener(new 
checkMenuClickListener(checkBarItem));
         return bar;
     }
     class checkMenuClickListener : SelectionListener {
         private:
         MenuItem checkItem;
         ToolItem toolItem;
         public:
         this(MenuItem item) {
             this.checkItem=checkItem;
         }
         this(ToolItem toolItem) {
             this.toolItem=toolItem;
         }
         public void widgetSelected(SelectionEvent e) {
             if( checkItem !is null ){
                 if(checkItem.getSelection||checkBarItem.getSelection) {
                     MessageBox.showInfo("Checked","HAHA");
                 }
                 else{
                     MessageBox.showInfo("Unchecked","HAHA");
                 }
             }
         }
         public void widgetDefaultSelected(SelectionEvent e) {
             //leave blank
         }
     }
}
int main(char[][] args) {
     scope Form form=new Form;
     return 0;
}