[news.eclipse.platform.swt] Re: Checkbox appears when resizing table on

[Srdan Bejakovic <sbejakovic@xxxxxxxxx>]

Grant Gayed wrote:
> I think it will be difficult to know what's happening without a snippet that
> shows the problem.  Are you able to provide one (ideal snippet template:
> http://www.eclipse.org/swt/faq.php )?
>
> Grant
>
>
> "Srdan Bejakovic" <sbejakovic@xxxxxxxxx> wrote in message
> news:g0h3sl$k37$1@xxxxxxxxxxxxxxxxxxxx
> > I created a table with columns of checkboxes, combos and other controls.
> > The checkboxes are in the first column. When the table is resized on a
> > Mac, an additional checkbox appears over the column header; this doesn't
> > happen on Windows. I don't know if it's relevant, but the table is also
> > virtual. Any ideas about what can be done about this problem?

I've attached a snippet that reproduces the problem on Mac. The table 
starts out fine, as it's expanded, a checkbox appears, and as it becomes
larger the checkbox once again disappears.


package sandbox;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.TableEditor;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;

public class MacTableSnippet {
	public static void main (String [] args) {
	    Display display = new Display ();
	    Shell shell = new Shell (display);
	    shell.setLayout(new GridLayout());

		final Table table = new Table(shell, SWT.VIRTUAL | SWT.HIDE_SELECTION | SWT.BORDER);
		table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
		table.setLinesVisible(true);
		table.setHeaderVisible(true);
		table.setSize(200, 200);
	    table.setItemCount(50);
	   
	    final TableColumn newColumnTableColumn = new TableColumn(table, SWT.NONE);
		newColumnTableColumn.setWidth(50);
		newColumnTableColumn.setText("Select");
		
		table.addListener(SWT.SetData, new Listener() {
			public void handleEvent(Event event) {
				TableItem item = (TableItem)event.item;
				TableEditor editor = new TableEditor(table);
				final Button button = new Button(table, SWT.CHECK);
				button.setSelection(true);
				button.pack();
				editor.minimumWidth = button.getSize().x;
				editor.horizontalAlignment = SWT.LEFT;
				editor.setEditor(button, item, 0);
			}
		});
		
	    shell.open ();
	    while (!shell.isDisposed ()) {
	        if (!display.readAndDispatch ()) display.sleep ();
	    }
	    display.dispose ();
	}
}