TCustomImage

type TCustomImage = class(TGraphicControl)

protected

  procedure WSRegisterClass; override;

WSRegisterClass - Register this Class for the current Widget Set

  procedure PictureChanged(); virtual;

PictureChanged - software emulaton of the OnPictureChanged event

  function DestRect; virtual;

DestRect - returns the location of the destination rectangle

  procedure CalculatePreferredSize(); override;

CalculatePreferredSize - find default/preferred height and width

  function GetControlClassDefaultSize; override;

Find the default size for this class of controls (by reference to parents)

  procedure DoAutoSize; override;

DoAutoSize - method for actually performing the AutoSize

  procedure Paint; override;

Virtual Paint method called in response to paint requests.

public

  constructor Create(); override;

Create - constructor for TCustomImage: calls inherited Create then sets default style, bounds and local variables: creates space for the picture

  destructor Destroy; override;

Destroy - destructor for TCustomImage: frees picture then calls inherited Destroy

  property Canvas: TCanvas; [r]

A clipping window to the parent canvas.

  property Align;

Used to align the control to the top, bottom, left or right of its client.

  property AutoSize;

Whether auto-size is to be used

  property Center: Boolean; [rw]

Should image be centered?

  property Constraints;

Determine Constraints (max and min height and width) for this control

  property Picture: TPicture; [rw]

Picture - the actual image for display

  property Visible;

Visible - can the control be seen?

  property OnClick;

Event Handler for mouse click

  property OnMouseDown;

Event handler for when a mouse button is pressed down

  property OnMouseMove;

Event handler for mouse movement within the current control

  property OnMouseUp;

Event handler for when the mouse button is released, ie "up"

  property Stretch: Boolean; [rw]

True if picture is to be stretched

  property Transparent: Boolean; [rw]

True if you can see through the image

  property Proportional: Boolean; [rw]

True if image is proportional

  property OnPictureChanged: TNotifyEvent; [rw]

OnPictureChanged - event handler for a change in the picture

end;

TCustomImage

TCustomImage - the base type for TImage

TGraphicControl

TGraphicControl is the base class for all lightweight controls.

TControl

TControl - the main ancestor class for visual controls.

TLCLComponent

TObject

TGraphicControl

TGraphicControl is the base class for all lightweight controls.