hi,
i am adding widgets to a horizontal panel, and i want them to be all once next to the other on the left corner. 
even though i have set the spacing=0 and alignment= left the widgets still have space between them. they are spread evenly in the panel.
please see the code here for the widget C'tor and the function that adds a new tab (toggle button)
tabsPanel is a horizontalPanel, that you can see is aligned to left/right according to the locale
any advise would be appreciated
thanks....
public TabsWidgetManager(int width, int height, int tabs_shift_direction){ 
    DecoratorPanel decorContent = new DecoratorPanel();
    DecoratorPanel decorTitle = new DecoratorPanel();
    widgetPanel.setSize(Integer.toString(width), Integer.toString(height));
    tabsPanel.setSize(Integer.toString(UIConst.USER_CONTENT_WIDTH), Integer.toString(UIConst.TW_DEFAULT_TAB_HEIGHT));
    tabsPanel.setSpacing(0);
    if (tabs_shift_direction==1)
        tabsPanel.setHorizontalAlignment(HorizontalPanel.ALIGN_LEFT);
    else
        tabsPanel.setHorizontalAlignment(HorizontalPanel.ALIGN_RIGHT);
    decorTitle.add(tabsPanel);
    contentPanel.setSize(Integer.toString(UIConst.USER_CONTENT_WIDTH), Integer.toString(UIConst.USER_CONTENT_MINUS_TABS_HEIGHT));
    decorContent.add(contentPanel);
    widgetPanel.add(decorTitle, 0, 0);
    widgetPanel.add(decorContent, 0, UIConst.TW_DEFAULT_TAB_HEIGHT+15);
    initWidget(widgetPanel);
}
public void addTab(String title, Widget widget){
    widget.setVisible(false);
    ToggleButton tab = new ToggleButton(title);
    tabsList.add(tab);
    tab.setSize(Integer.toString(UIConst.TW_TAB_DEFAULT_WIDTH), Integer.toString(UIConst.TW_TAB_DEFAULT_HEIGHT));
    tab.addClickHandler(new ClickHandler() {
        @Override
        public void onClick(ClickEvent event) {
            handleTabClick((ToggleButton)event.getSource());
        }
    });
    //adding to the map
    tabToWidget.put(tab, widget);
    // adding to the tabs bar 
    tabsPanel.add(tab);
    //adding to the content
    contentPanel.add(widget);
}