This class can also be used as the abstract superclass for user-designed dialogs. Such dialogs usually consist of a Shell with child widgets. The basic template for a user-defined dialog typically looks something like this:

 public class MyDialog extends Dialog {
	Object result;
		
	public MyDialog (Shell parent, int style) {
		super (parent, style);
	}
	public MyDialog (Shell parent) {
		this (parent, 0); // your default style bits go here (not the Shell's style bits)
	}
	public Object open () {
		Shell parent = getParent();
		Shell shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
		shell.setText(getText());
		// Your code goes here (widget creation, set result, etc).
		shell.open();
		Display display = parent.getDisplay();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch()) display.sleep();
		}
		return result;
	}
 }
 

Note: The modality styles supported by this class are treated as HINTs, because not all are supported by every subclass on every platform. If a modality style is not supported, it is "upgraded" to a more restrictive modality style that is supported. For example, if PRIMARY_MODAL is not supported by a particular dialog, it would be upgraded to APPLICATION_MODAL. In addition, as is the case for shells, the window manager for the desktop on which the instance is visible has ultimate control over the appearance and behavior of the instance, including its modality.

Styles:

APPLICATION_MODAL, PRIMARY_MODAL, SYSTEM_MODAL

Events:

(none)

Note: Only one of the styles APPLICATION_MODAL, PRIMARY_MODAL, and SYSTEM_MODAL may be specified.