[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'Forms' (#lcl)

# Reference for unit 'Forms': Variables

`Application` |  | The TApplication singleton.
`ExceptionObject` |  | Variable representing the current exception object in an application.
`HintWindowClass` |  | The class type used to create hint window instances for an application.
`IsFormDesign` |  | Address of the function used to determine if a specified control is a form designer.
`MessageBoxFunction` |  | Provides the routine used to display a message dialog in widgetset implementations.
`OnGetDesignerForm` |  | Event handler signalled to get the designer form for the specified form or control.
`RequireDerivedFormResource` |  | When True every form must have a resource (e.g. a .res file). An exception is raised if the resource is missing when creating a form.
`Screen` |  | The TScreen singleton for the application.