TApplication

type TApplication = class(TCustomApplication)

protected

  function GetConsoleApplication; override;

GetConsoleApplication - returns True if this is a Console application (ie text-mode, non-GUI)

  procedure NotifyIdleHandler();

NotifyIdleHandler - method for sending message to Idle handler (sends True if process is done)

  procedure NotifyIdleEndHandler;

NotifyIdleEndHandler - method for sending message to handler for end of idle state

  procedure NotifyActivateHandler;

NotifyActivateHandler - method for sending message to handler for activation

  procedure NotifyDeactivateHandler;

NotifyDeactivateHandler - method for sending message to handler for deactivation

  procedure NotifyCustomForms();

  function IsHintMsg();

IsHintMsg - returns True if specified message is a valid Hint

  function DoOnHelp(); virtual;

  procedure DoOnMouseMove; virtual;

DoOnMouseMove - method for the OnMouseMove event

  procedure ShowHintWindow();

ShowHintWindow - method for showing a hint window

  procedure OnHintTimer();

OnHintTimer - event handler for timing the duration of hints

  procedure SetTitle(); override;

SetTitle - method for writing the specified title string to local store

  procedure StartHintTimer();

StartHintTimer - method for starting the timer for display of a hint message

  procedure UpdateVisible;

UpdateVisible - update all visible components

  procedure DoIdleActions;

DoIdleActions - perform the actions that remain idle

  procedure MenuPopupHandler();

MenuPopupHandler - method for dealing with menu popups

  procedure ProcessAsyncCallQueue;

ProcessAsyncCallQueue - method to process a queue of asynchronous calls

  procedure FreeComponent();

FreeComponent - method for freeing a component

  procedure ReleaseComponents;

  procedure DoBeforeFinalization;

DoBeforeFinalization - the things to be done before finalisation of the application

  function GetParams(); override;

GetParams - find the application's parameters (typically by parsing the command line that invoked the application)

public

  constructor Create(); override;

Create - constructor for TApplication: initialises a large number of local variables and properties, then calls inherited Create

  destructor Destroy; override;

Destroy - destructor for TApplication: frees various handles and flags, then cals inherited Destroy

  procedure ActivateHint();

  function GetControlAtMouse;

  procedure ControlDestroyed();

Method for dealing with a control that has been destroyed

  function BigIconHandle;

BigIconHandle - system Handle for large Icon

  function SmallIconHandle;

SmallIconHandle - system handle for small Icon

  procedure BringToFront;

BringToFront - Use the selected widget set's method to bring the application's form(s) to the front

  procedure CreateForm();

Create Form or any other kind of component

  procedure UpdateMainForm();

UpdateMainForm - update the Application's main form

  procedure QueueAsyncCall();

Insert a given asynchronous call into the queue

  procedure RemoveAsyncCalls();

  procedure ReleaseComponent();

ReleaseComponent - method to release the specified component

  function ExecuteAction(); override;

ExecuteAction - calls the OnActionExecute event hndler if it is assigned

  function UpdateAction(); override;

UpdateAction - calls the OnUpdateAction event handler if it is assigned

  procedure HandleException(); override;

HandleException method for handling an exception; attempts to maintain program execution if possible, otherwise exits gracefully

  procedure HandleMessage;

Process all events according to the method defined for the widget set

  function HelpCommand();

  function HelpContext();

HelpContext - returns True if there is a specified context-dependent help message associated with the application, with an optionally specified position

  function HelpKeyword();

HelpKeyword - returns True if there is a specified help keyword associated with the application, with an optionally specified position

  procedure ShowHelpForObject();

ShowHelpForObject - method for displaying help messages

  procedure RemoveStayOnTop();

  procedure RestoreStayOnTop();

  function IsWaiting;

IsWaiting - returns True if the application is awainting an event

  procedure CancelHint;

Cancels a request for a hint, if there is no hint timer or no hint to display

  procedure HideHint;

Don't display the hint

  procedure HintMouseMessage();

HintMouseMessage - method to find the hint for the control at the mouse position

  procedure Initialize; override;

Initialize - calls inherited Initialize, then initialises widget set, loads icons from Laz resources and updates screen

  function MessageBox();

Message Box: a useful function to display a message.

  procedure Minimize;

Minimise the form using the widget set's method

  procedure ModalStarted;

  procedure ModalFinished;

  procedure Restore;

Restore the application's form to the size it was before minimisation or maximisation

  procedure Notification(); override;

Notification if Operation is Remove, then sets any Component to nil, otherwise calls inherited Notification

  procedure ProcessMessages;

ProcessMessages - method for processing system messages

  procedure Idle();

Idle - method for rendering the Application Idle if Wait is True

  procedure Run;

  procedure ShowException(); override;

  procedure Terminate; override;

  procedure DisableIdleHandler;

DisableIdleHandler - turn off the Idle handler

  procedure EnableIdleHandler;

EnableIdleHandler - turn on the Idle handler

  procedure NotifyUserInputHandler();

NotifyUserInputHandler - send message t handler for user input

  procedure NotifyKeyDownBeforeHandler();

NotifyKeyDownBeforeHandler - send message to handler for the condition where a key has been previously pressed (eg a Shift, Control or Alt key(

  procedure NotifyKeyDownHandler();

NotifyKeyDownHandler - sends message to handler for a key pressed down

  procedure ControlKeyDown();

ControlKeyDown - method for dealing with the Control Key being pressed down

  procedure ControlKeyUp();

ControlKeyUp - method for dealing with a released Control key

  procedure AddOnIdleHandler();

AddOnIdleHandler - method for adding a handler for the Idle state

  procedure RemoveOnIdleHandler();

RemoveOnIdleHandler - method for removing a handler for the Idle state

  procedure AddOnIdleEndHandler();

AddOnIdleEndHandler - method to add a handler for the end of the Idle state

  procedure RemoveOnIdleEndHandler();

RemoveOnIdleEndHandler - method for removing handler for the end of the Idle state

  procedure AddOnUserInputHandler();

AddOnUserInputHandler - method for adding a handler for user input

  procedure RemoveOnUserInputHandler();

RemoveOnUserInputHandler - method for removing handler for user input

  procedure AddOnKeyDownBeforeHandler();

AddOnKeyDownBeforeHandler - method for adding handler for the state where a key (eg Ctrl, Shift, Alt) has been already pressed

  procedure RemoveOnKeyDownBeforeHandler();

RemoveOnKeyDownBeforeHandler - method for removing handler for the state where a key (eg Ctrl, Shift, Alt) has been already pressed

  procedure AddOnKeyDownHandler();

AddOnKeyDownHandler - method for adding a handler for the Key Down state

  procedure RemoveOnKeyDownHandler();

RemoveOnKeyDownHandler - method for removing handler for the Key Down state

  procedure AddOnActivateHandler();

AddOnActivateHandler - method for adding a handler for activation

  procedure RemoveOnActivateHandler();

RemoveOnActivateHandler - method for removing handler for activation

  procedure AddOnDeactivateHandler();

AddOnDeactivateHandler - method for adding handler for deactivation

  procedure RemoveOnDeactivateHandler();

RemoveOnDeactivateHandler - method for removing deactivation handler

  procedure AddOnExceptionHandler();

AddOnExceptionHandler - method for adding exception handler

  procedure RemoveOnExceptionHandler();

RemoveOnExceptionHandler - method for removing exception handler

  procedure AddOnEndSessionHandler();

AddOnEndSessionHandler - method for adding handler for end of session

  procedure RemoveOnEndSessionHandler();

RemoveOnEndSessionHandler - method for removing handler for end of session

  procedure AddOnQueryEndSessionHandler();

AddOnQueryEndSessionHandler - method for adding handler for a query at the end of a session

  procedure RemoveOnQueryEndSessionHandler();

RemoveOnQueryEndSessionHandler - method for removing handler for a query at the end of a session

  procedure AddOnMinimizeHandler();

AddOnMinimizeHandler - method for adding handler for minimising component

  procedure RemoveOnMinimizeHandler();

RemoveOnMinimizeHandler - method to remove handler for maximising component

  procedure AddOnModalBeginHandler();

  procedure RemoveOnModalBeginHandler();

  procedure AddOnModalEndHandler();

  procedure RemoveOnModalEndHandler();

  procedure AddOnRestoreHandler();

AddOnRestoreHandler - method to add handler for Restore component

  procedure RemoveOnRestoreHandler();

RemoveOnRestoreHandler - method to remove restore handler

  procedure AddOnDropFilesHandler();

AddOnDropFilesHandler - method to add handler for dropped files

  procedure RemoveOnDropFilesHandler();

RemoveOnDropFilesHandler - method for removing drop files handler

  procedure AddOnHelpHandler();

AddOnHelpHandler - method to add Help handler

  procedure RemoveOnHelpHandler();

RemoveOnHelpHandler - method to remove Help handler

  procedure AddOnHintHandler();

AddOnHintHandler - method to add handler for Hints

  procedure RemoveOnHintHandler();

RemoveOnHintHandler - method to remove Hint handler

  procedure AddOnShowHintHandler();

AddOnShowHintHandler - method to add handler for showing Hints

  procedure RemoveOnShowHintHandler();

RemoveOnShowHintHandler - method for removing handler for showing Hints

  procedure RemoveAllHandlersOfObject(); virtual;

RemoveAllHandlersOfObject - method to remove all handlers of an object

  procedure DoBeforeMouseMessage();

DoBeforeMouseMessage - things to be done before a mouse message is processed

  function IsShortcut();

IsShortcut - returns True if specified Keyi s a shortcut

  procedure IntfQueryEndSession();

IntfQueryEndSession - called by the interface when there is a query at the end of a session

  procedure IntfEndSession;

IntfEndSession - called by the interface at the end of a session

  procedure IntfAppActivate;

  procedure IntfAppDeactivate;

  procedure IntfAppMinimize;

IntfAppMinimize - called by the interface if an application is minimised

  procedure IntfAppRestore;

IntfAppRestore - called by the interface when an application is being restored

  procedure IntfDropFiles();

IntfDropFiles - called by the interface for dropping files

  procedure IntfThemeOptionChange();

  function IsRTLLang();

  function Direction();

  procedure DoArrowKey();

DoArrowKey - method for processing an arrow key

  procedure DoEscapeKey();

DoEscapeKey - method for processing the Escape key

  procedure DoReturnKey();

DoReturnKey - method for processing the Return (Enter) key

  procedure DoTabKey();

DoTabKey - method for processing the Tab key

  property Active: Boolean; [r]

Active - returns True if this is an active Application

  property ApplicationType: TApplicationType; [rw]

ApplicationType - The type of the application (ie the sort of device for which it is intended)

  property BidiMode: TBiDiMode; [rw]

BidiMode - whether bi-directional mode is available

  property CaptureExceptions: Boolean; [rw]

CaptureExceptions - If exceptions have occurred, find out what they are, ready for processing

  property FindGlobalComponentEnabled: Boolean; [rw]

FindGlobalComponentEnabled - returns True if the Find Global Component state is enabled

  property Flags: TApplicationFlags; [rw]

Flags - the list of flags for this application

  property Hint: String; [rw]

The hint associated with the main application

  property HintColor: TColor; [rw]

The colour used to display the hint

  property HintHidePause: Integer; [rw]

The delay period after mouse entry before the hint becomes visible

  property HintHidePausePerChar: Integer; [rw]

HintHidePausePerChar - the pause period per character for hiding a hint

  property HintPause: Integer; [rw]

HintPause - The length of time for which the hint is displayed

  property HintShortCuts: Boolean; [rw]

HintShortCuts - If True, there are hints for short cut keys

  property HintShortPause: Integer; [rw]

HintShortPause - the pause before a shortcut hint is displayed

  property Icon: TIcon; [rw]

The icon to be associated with this application

  property Navigation: TApplicationNavigationOptions; [rw]

Determine how the form is to be navigated

  property MainForm: TForm; [r]

The Main Form used by the application for process control and for data input/output

  property ModalLevel: Integer; [r]

  property MouseControl: TControl; [r]

  property TaskBarBehavior: TTaskBarBehavior; [rw]

  property OnActionExecute: TActionEvent; [rw]

OnActionExecute - event handler for executing the application's main action

  property OnActionUpdate: TActionEvent; [rw]

OnActionUpdate - event handler for updating the application's main action

  property OnActivate: TNotifyEvent; [rw]

OnActivate - Event handler for activation of the application

  property OnDeactivate: TNotifyEvent; [rw]

OnDeactivate - Event handler for deactivation of the application

  property OnIdle: TIdleEvent; [rw]

OnIdle - event handler for the Idle state

  property OnIdleEnd: TNotifyEvent; [rw]

OnIdleEnd - event handler for the end of the Idle state

  property OnEndSession: TNotifyEvent; [rw]

OnEndSession - Event handler for ending a session of the application

  property OnQueryEndSession: TQueryEndSessionEvent; [rw]

OnQueryEndSession - event handler for processing a query at the end of a session

  property OnMinimize: TNotifyEvent; [rw]

OnMinimize - Event handler for minimising the application's form

  property OnModalBegin: TNotifyEvent; [rw]

  property OnModalEnd: TNotifyEvent; [rw]

  property OnRestore: TNotifyEvent; [rw]

OnRestore - Event handler for restoring the application's form from minimised or maximised condition

  property OnDropFiles: TDropFilesEvent; [rw]

OnDropFiles - The event invoked when file is dropped on one of the application forms.

  property OnHelp: THelpEvent; [rw]

OnHelp - Event handler when help is required

  property OnHint: TNotifyEvent; [rw]

OnHint - Event handler when a hint is required

  property OnShortcut: TShortCutEvent; [rw]

OnShortcut - Event handler when a shortcut key is pressed

  property OnShowHint: TShowHintEvent; [rw]

OnShowHint - Event handler for showing a hint

  property OnUserInput: TOnUserInputEvent; [rw]

OnUserInput - Event handler when user input is required or is occurring

  property OnDestroy: TNotifyEvent; [rw]

OnDestroy - Event handler for destruction of the application

  property ShowButtonGlyphs: TApplicationShowGlyphs; [rw]

  property ShowMenuGlyphs: TApplicationShowGlyphs; [rw]

  property ShowHint: Boolean; [rw]

ShowHint - Is a hint required to be shown?

  property ShowMainForm: Boolean; [rw]

ShowMainForm - Is the main form for the application to be shown? Default TRUE

  property Title: String; [rw]

end;

TApplication

TApplication - the whole current program, described as an object

TCustomApplication

TComponent,IUnknown,IInterfaceComponentReference

TPersistent

TObject