SWT: Detecting which key was pressed during a MouseClick by Lars Vogel

Sometimes you want to detect the metakey which was pressed during a mouse click on SWT widget. This information is available in the SelectionEvent via the stateMask property.

The following code shows an example for this.

Button button = new Button(shell, SWT.READ_ONLY);
		button.setText("Press me");
		button.setSize(200, 200);
		button.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(SelectionEvent e) {
				if ((e.stateMask & SWT.CTRL) != 0) {
					System.out.println("SWT.CTRL");
				}
			}
		});