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
if (message == null)	
			message = "";		
		messageLabel.setText(message);
		messageLabel.setImage(messageImage);
		messageLabel.setToolTipText(message);
	} else {
		messageLabel.setText(errorMessage);
		messageLabel.setToolTipText(errorMessage);
		if (!showingError) {
			
			showingError = true;
						
			
			if (errorMsgAreaBackground == null) {
				errorMsgAreaBackground = JFaceColors.getErrorBackground(messageLabel.getDisplay());
				errorMsgImage = JFaceResources.getImage(PREF_DLG_IMG_TITLE_ERROR);
			}
				
			normalMsgAreaBackground = messageLabel.getBackground();
			messageLabel.setBackground(errorMsgAreaBackground);
			messageLabel.setImage(errorMsgImage);
			titleImage.setImage(null);
		}
	}
	titleArea.layout(true);
}
/**
 * Sets whether a Help button is available for this dialog.