TCustomMemo

type TCustomMemo = class(TCustomEdit)

  class procedure WSRegisterClass; override;

WSRegisterClass - Register this Class for the current Widget Set

protected

  procedure CreateParams(); override;

  procedure InitializeWnd; override;

InitializeWnd - initialises the window by creating the borders and outline, then loading up any strings that have already been specified for display

  procedure FinalizeWnd; override;

FinalizeWnd - getting ready to close down the window: first stores the text strings in a safe place, then frees the storage occupied by them

  function RealGetText; override;

RealGetText - returns the contents of Lines.Text (overriding inherited method)

  procedure RealSetText(); override;

RealSetText - copies Value into Lines.Text (overriding inherited method)

  function GetCachedText(); override;

GetCachedText - method for retrieving caption text from cache; returns True if successful

  function GetCaretPos; override;

GetCaretPos - returns the position of the caret or edit cursor

  procedure SetCaretPos(); override;

SetCaretPos - specifies the position of the caret or edit cursor

  procedure SetLines();

SetLines - specify the text strings to occupy Lines

  procedure SetSelText(); override;

SetSelText - specifies the selected text string

  procedure SetWantReturns();

SetWantReturns - sets a boolean flag showing that Return characters are to be included in the edit strings

  procedure SetWantTabs();

SetWantTabs - sets a boolean flag to show that the use of tabs in the edit string is required

  procedure SetWordWrap();

SetWordWrap - speifies the value of the WordWrap property

  procedure SetScrollBars();

SetScrollBars - specifies the style of the scroll bars

  procedure Loaded; override;

Loaded calls inherited method then sets the ScrollBar and WordWrap properties

  procedure ControlKeyDown(); override;

ControlKeyDown - contains the set of special keys (shift, control, alt, meta) that are pressed

  procedure CNChar(); message;

CNChar - control message specifying a character

protected

  class function GetControlClassDefaultSize; override;

GetControlClassDefaultSize - makes its own defaults, overriding inherited method

public

  constructor Create(); override;

Create - constructor for TCustomMemo: calls inherited Create then initialises some variables, creates the stringlist and creates scrollbars

  destructor Destroy; override;

Destroy - destructor for TCustomMemo: frees stringlist and scrollbars then calls inherited Destroy

  procedure Append();

Append - procedure for adding a text string to the Memo

  property Lines: TStrings; [rw]

Lines : an array of strings (single lines of characters) which contains the text held or being entered in the Memo

  property HorzScrollBar: TMemoScrollbar; [rw]

The horizontal scroll bar for this memo

  property VertScrollBar: TMemoScrollbar; [rw]

The Vertical scroll bar for this memo

  property ScrollBars: TScrollStyle; [rw]

Whether the Memo has ScrollBars - none, horizontal or vertical or both, or automatically placed if needed

  property WantReturns: Boolean; [rw]

Whether Return characters are required to be included in the memo

  property WantTabs: Boolean; [rw]

Whether Tab characters are required to be retained in the Memo

  property WordWrap: Boolean; [rw]

Is WordWrap enabled, allowing long words to be carried on to the next line?

end;

TCustomMemo

TCustomMemo : the base class for TMemo

TCustomEdit

TCustomEdit : the base type from which the TEdit Box is derived.

TWinControl

TControl

TLCLComponent

TLCLComponent - base class for LCL components

TComponent,IUnknown,IInterfaceComponentReference

TPersistent

TObject