Bug 25419 [Dialogs] Can't Maximize Window: "Preferences"
Build: 200210181211 The "Preferences" window cannot be maximized since it neither has a maximize title bar button nor does the title bar respond to being double-clicked. The only work around is to reside the window manually by dragging the border. For short-lived windows this is too detail-oriented and time-consuming.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
GridData gd;
	Composite composite = (Composite)super.createDialogArea(parent);
	((GridLayout) composite.getLayout()).numColumns = 2;
	((GridLayout) composite.getLayout()).horizontalSpacing = 10;
	
	
	createTree(composite);
	gd = new GridData(GridData.FILL_VERTICAL);
	gd.widthHint = 150;
	gd.verticalSpan = 2;
	tree.setLayoutData(gd);
	
	Composite titleComposite = new Composite(composite, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	layout.verticalSpacing = 0;
	layout.horizontalSpacing = 0;
	titleComposite.setLayout(layout);
	titleComposite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	
	createTitleArea(titleComposite);
	Label titleBarSeparator = new Label(titleComposite, SWT.HORIZONTAL | SWT.SEPARATOR);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	titleBarSeparator.setLayoutData(gd);
	
	pageContainer = createPageContainer(composite);
	pageContainer.setLayoutData(new GridData(GridData.FILL_BOTH));
	pageContainer.setFont(parent.getFont());