CodeSnip Old Code (SVN)

Added exception handlers for each TWBExternal method that calls notifier object. Gets application to handle exceptions. This prevents browser control displaying a JavaScript error dialog if an exception occurs in external object.

Removed redundant public DocContent property from TPreviewDlg and updated code accordingly.

Removed redundant public Search property from find dialog classes and adjusted code accordingly.

Changed form classes to prevent public construction - forms must be displayed via class methods, not by directly constructing object. Added INoPublicConstruct to type definitions of forms and changed class methods that construct forms to call InternalCreate protected constructor instead of Create. Core logic to determine constructor behaviour is inherited from TBaseForm.

* Added new protected InternalCreate constructor that must be called if and only if descendant forms support INoPublicConstruct and are constructed internally from class methods. Descendants that don't support public construction must add INoPublicConstruct to their type definition.
* Added logic to Create constructor so that it can only be called if the form does not support INoPublicContruct.

Added new INoPublicConstruct interface that can be supported by objects that do not permit public construction but that cannot descend from TNoPublicConstructObject, such as TForms.

Removed unused code that was causing compiler to emit hints.

* Changed TQuery to enforce that it is a singleton object: it can now only be created once.
* TQuery now instantiates itself by means of Instance property: Query function now calls TQuery.Instance rather than constructing object itself.
* Assert statements changed to use ClassName method to get class name for error messages.

Added new TNoPublicConstructIntfObject class that provides a protected constructor but fails if the public constructor is called. For use as a base class for reference counted interfaced objects that are constructed via class methods but should not be constructed directly.

Version numbers updated to 3.2.1.155, ready for next release.