Vcl.Imaging.jpeg.TJPEGImage Methods

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InheritedProtected

_AddRef	protected	Increments the reference count for the interfaced object's interface.
_Release	protected	Decrements the reference count for the interfaced object's interface.
AfterConstruction	public	Obtains a reference to the Owner's interface.
Assign	public	Copies the jpeg image object and creates a new reference to the internal data source object.
AssignTo	protected
BeforeDestruction	public	Responds before the first destructor executes.
CanLoadFromStream	public
Changed	protected
CheckDisposed	protected	This method is deprecated.
ClassInfo	public	Returns a pointer to the run-time type information (RTTI) table for the object type.
ClassName	public	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
ClassNameIs	public	Determines whether an object is of a specific type.
ClassParent	public	Returns the type of the immediate ancestor of a class.
ClassType	public	Returns the class reference for the object's class.
CleanupInstance	public	Performs finalization on long strings, variants, and interface variables within a class.
Compress	public	Forces the action of compression.
Create	public	Instantiates a jpeg image object.
DefaultHandler	public	Provides the interface for a method that processes message records.
DefineProperties	protected	Set virtual property for reading and writing graphic data stream.
Destroy	public	Destroys an instance of a jpeg image object.
DIBNeeded	public	Decompress the jpeg image into a bitmap.
DisableScaledDrawer	public	Disables scaled drawer for a graphic.
Dispatch	public	Calls message-handling methods for the object, based on the contents of the Message parameter.
DisposeOf (deprecated)	public	DisposeOf forces the execution of the destructor code in an object.
Draw	protected
DrawTransparent	protected	Render graphic onto canvas at rectangle, blending with canvas's background.
EnableScaledDrawer	public	Enables scaled drawer for a graphic
Equals	protected
FieldAddress	public	Returns the address of a published object field.
Free	public	Destroys an object and frees its associated memory, if necessary.
FreeBitmap	protected	Frees the internal bitmap representation of the jpeg image.
FreeInstance	public	Deallocates memory allocated by a previous call to the NewInstance method.
GetDisposed	protected	Getter for the Disposed property.
GetEmpty	protected
GetHashCode	public	Returns an integer containing the hash code.
GetHeight	protected
GetInterface	public	Retrieves a specified interface.
GetInterfaceEntry	public	Returns the entry for a specific interface implemented in a class.
GetInterfaceTable	public	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
GetIsAnimating	protected
GetNamePath	public	Returns the name of the object as it appears in the Object Inspector.
GetOwner	protected	Returns the owner of an object.
GetPalette	protected
GetSupportsPartialTransparency	protected	Indicate whether graphic supports partial transparency.
GetTransparent	protected	Specifies if graphic is drawn transparently.
GetWidth	protected
InheritsFrom	public	Determines the relationship of two object types.
InitInstance	public	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
InstanceSize	public	Returns the size in bytes of each instance of the object type.
JPEGNeeded	public	Creates a new TJPEGData object if the jpeg image only has a bitmap and a jpeg is needed.
LoadFromClipboardFormat	public	Reads in a jpeg image from the Clipboard into the jpeg image object.
LoadFromFile	public	Loads a graphic image stored in a file.
LoadFromStream	public	Loads the jpeg image from a stream.
MethodAddress	public	Returns the address of a class method by name.
MethodName	public	Returns the name of a class method by address.
NewBitmap	protected	Creates a new bitmap that holds the representation of the jpeg image.
NewImage	protected	Creates a new data object that holds the internal representation of the jpeg image.
NewInstance	public	Allocates memory for an instance of an object type and returns a pointer to that new instance.
operator ()	public
Progress	protected	Generate OnProgress event when graphic is changing.
QualifiedClassName	public	Returns the qualified name of the class.
QueryInterface	public	Returns a reference to a specified interface if the object supports that interface.
ReadData	protected
ReadStream	protected	Loads the jpeg image from a stream.
SafeCallException	public	Handles exceptions in methods declared using the safecall calling convention.
SaveToClipboardFormat	public	Writes a jpeg image to a variable in Clipboard format.
SaveToFile	public	Saves a graphics image to a file.
SaveToStream	public	Writes the jpeg data to a stream.
SetHeight	protected
SetPalette	protected	Sets the color palette of the jpeg image.
SetSize	public	Specifies the size of the graphic.
SetTransparent	protected	Specify if graphic should be drawn transparently.
SetWidth	protected
ToString	public	Returns a string containing the class name.
UnitName	public	Returns the name of the unit where the class is defined.
UnitScope	public	Returns the class's unit scope.
UpdateScaledDrawer	public
WriteData	protected