How to create a check box in the toolbar in SWT?

the ToolItem could be of type check box. You can have a custom tool bar "Filtering", but the items should be in a row, not in a column.
In the previous code I have added for you one check box item in the first tab /the last one, the one with name item_2_3/. It is not real check box, but you can change the icon / icon checked | icon not checked /. This is the only way you can implement the check box in the tool bar. Click on "item_2_3". If you choose the right icon, then it's check box. for example see the eighth icon in Eclipse, it's like checkbox.

item12_111 = new ToolItem(custToolBar12.getToolBar(), SWT.CHECK);

I put the following lines for the checkbox.

        //3rd group
        CustomToolbar custToolBar333 = new CustomToolbar(compTB3, SWT.BORDER, "Filtering");
        
        item3333 = new ToolItem(custToolBar333.getToolBar(), SWT.CHECK);
        item3333.setImage(image_floppy_disk); item3333.setText("Filtering"); item3333.setToolTipText("Filter the results below");
        item3333.addListener(SWT.Selection, toolBarListener);

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Obviously, I didn't you the right icon but when when I click on the icon it shows like selected but not like a check box. It's more like a selected button and not selected button.

How can I do it as it is in the attachment that I sent in the first post of this questions?

Perfect solution!