TAlphaBitmap Members

The following tables list the members exposed by TAlphaBitmap.

	Name	Description
	_AddRef	Increments the reference count for the interfaced object's interface.
	_Release	Decrements the reference count for the interfaced object's interface.
	AssignTo	Copies the properties of an object to a destination object.
	Changed	Called when graphic has changed.
	Changed	Called when graphic has changed.
	DefineProperties	Provides an interface for a method that reads and writes otherwise unpublished data.
	DefineProperties	Set virtual property for reading and writing graphic data stream.
	Draw	Render graphic onto canvas at rectangle.
	Draw	Render graphic onto canvas at rectangle.
	DrawTransparent	Render graphic onto canvas at rectangle, blending with canvas's background.
	DrawTransparent	Render graphic onto canvas at rectangle, blending with canvas's background.
	Equals	This is the overview for the Equals method overload.
	GetEmpty	Indicates whether graphics object contains graphic.
	GetEmpty	Indicates whether graphics object contains graphic.
	GetHeight	Get vertical size of graphic in pixels.
	GetHeight	Get vertical size of graphic in pixels.
	GetOwner	Returns the owner of an object.
	GetPalette	Get color palette of graphical image.
	GetPalette	Get color palette of graphical image.
	GetSupportsPartialTransparency	Indicate whether graphic supports partial transparency.
	GetSupportsPartialTransparency	Indicate whether graphic supports partial transparency.
	GetTransparent	Specifies if graphic is drawn transparently.
	GetWidth	Get horizontal size of graphic in pixels.
	GetWidth	Get horizontal size of graphic in pixels.
	HandleNeeded	Create GDI bitmap for TBitmap if it doesn't already exist.
	MaskHandleNeeded	Create GDI bitmap for TBitmap's mask if it doesn't already exist.
	PaletteNeeded	Create color palette for TBitmap's mask if it doesn't already exist.
	Progress	Generate OnProgress event when graphic is changing.
	ReadData	Read graphic data from TStream.
	ReadData	Read graphic data from TStream.
	SetHeight	Set vertical size of graphic in pixels.
	SetHeight	Set vertical size of graphic in pixels.
	SetPalette	Set color palette of graphical image.
	SetPalette	Set color palette of graphical image.
	SetTransparent	Specify if graphic should be drawn transparently.
	SetWidth	Set horizontal size of graphic in pixels.
	SetWidth	Set horizontal size of graphic in pixels.
	WriteData	Write graphic data to TStream.
	WriteData	Write graphic data to TStream.

Public Events

	Name	Description
	OnChange	Occurs whenever a graphical image changes.
	OnProgress	Occurs when a graphical image is in the process of changing.

Public Methods

	Name	Description
	_AddRef	Increments the reference count for this interface.
	_Release	Decrements the reference count for this interface.
	AfterConstruction	Obtains a reference to the Owner's interface.
	AfterConstruction	Responds after the last constructor has executed.
	Assign	Copies the contents of another, similar object.
	Assign	Copies a new bitmap image to the bitmap object.
	BeforeDestruction	Responds before the first destructor executes.
	ClassInfo	Returns a pointer to the runtime type information (RTTI) table for the object type.
	ClassName	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
	ClassNameIs	Determines whether an object is of a specific type.
	ClassParent	Returns the type of the immediate ancestor of a class.
	ClassType	Returns the class reference for the object's class.
	CleanupInstance	Performs finalization on long strings, variants, and interface variables within a class.
	Create	Create TAlphaBitmap instance.
	DefaultHandler	Provides the interface for a method that processes message records.
	Destroy	Destroys the TPersistent instance and frees its memory.
	Destroy	Disposes of the instance of the bitmap object.
	Destroy	Disposes of an object instance.
	Dispatch	Calls message-handling methods for the object, based on the contents of the Message parameter.
	Dormant	Creates a memory bitmap image in order to release the bitmap handle, forcing the image into DIB format to save resources.
	Equals	Checks if the current instance and the parameter are equal.
	FieldAddress	This is the overview for the FieldAddress method overload.
	Free	Destroys an object and frees its associated memory, if necessary.
	FreeImage	Frees the cached file image stored in memory by the bitmap.
	FreeInstance	Deallocates memory allocated by a previous call to the System::TObject::NewInstance method.
	GetHashCode	Returns an integer containing the hash code.
	GetInterface	Retrieves a specified interface.
	GetInterfaceEntry	Returns the entry for a specific interface implemented in a class.
	GetInterfaceTable	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
	GetNamePath	Returns the name of the object as it appears in the Object Inspector.
	HandleAllocated	Indicates whether the TBitmap object has acquired a handle to the underlying GDI object.
	InheritsFrom	Determines the relationship of two object types.
	InitInstance	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
	InstanceSize	Returns the size in bytes of each instance of the object type.
	LoadFromClipboardFormat	Loads a bitmap from the Clipboard into the bitmap object.
	LoadFromClipboardFormat	Introduces an abstract method that loads the image from a variable in Clipboard format.
	LoadFromFile	Loads a graphic image stored in a file.
	LoadFromResourceID	Loads a bitmap from a resource into the bitmap object.
	LoadFromResourceName	Loads a bitmap resource into the bitmap object.
	LoadFromStream	Loads an object from a persistent stream.
	LoadFromStream	Loads the bitmap from a stream into the bitmap object.
	LoadFromStream	Introduces an abstract method that loads the image from a stream.
	Mask	Converts the current bitmap image into a monochrome mask, replacing TransparentColor with white and every other color with black.
	MethodAddress	This is the overview for the MethodAddress method overload.
	MethodName	Returns the name of a class method by address.
	NewInstance	Allocates memory for an instance of an object type and returns a pointer to that new instance.
	QueryInterface	Returns a reference to a specified interface if the object supports that interface.
	QueryInterface	Returns a reference to a specified interface if the object supports that interface.
	ReleaseHandle	Returns the handle to the bitmap so that the TBitmap object no longer knows about the handle.
	ReleaseMaskHandle	Returns the handle to the bitmap's mask so that the TBitmap object no longer knows about the mask handle.
	ReleasePalette	Returns the handle to the bitmap's palette and disassociates the palette from the TBitmap object.
	SafeCallException	Handles exceptions in methods declared using the safecall calling convention.
	SaveToClipboardFormat	Creates a local copy of the bitmap in Clipboard format.
	SaveToClipboardFormat	Introduces an abstract method that assigns the graphic to a variable in clipboard format.
	SaveToFile	Saves a graphics image to a file.
	SaveToStream	Saves the implementing class instance to a persistent stream.
	SaveToStream	Saves the bitmap to a stream.
	SaveToStream	Introduces an abstract method that saves the graphic image to a stream.
	SetSize	Specifies the size of the bitmap.
	SetSize	Specifies the size of the graphic.
	ToString	Returns a string containing the class name.
	UnitName	Returns a string containing the unit name.

Public Properties

	Name	Description
	AlphaFormat	Indicates how reserved byte of each pixel is used in 32 bit bitmaps.
	Canvas	Provides access to a drawing surface that represents the bitmap.
	Empty	Indicates whether the graphics object contains a graphic.
	Handle	Provides access to the Windows GDI bitmap handle for accessing the GDI bitmap object.
	HandleType	Indicates whether the bitmap is a device-dependent bitmap, or a device-independent bitmap.
	Height	Specifies the vertical size of the graphic in pixels.
	IgnorePalette	Determines whether the bitmap realizes its palette when drawing its image.
	MaskHandle	Provides access to the Windows GDI bitmap handle for accessing the GDI bitmap object.
	Modified	Indicates whether the graphics object has been changed or edited.
	Monochrome	Determines whether the bitmap displays its image in monochrome.
	Palette	Indicates the color palette of the graphical image.
	PaletteModified	Indicates whether the palette has changed.
	PixelFormat	Indicates the bit format of the bitmap image, specifying how the image is displayed and how the pixels of the bitmap image are stored in memory.
	ScanLine	Provides indexed access to each line of pixels.
	SupportsPartialTransparency	Indicate whether graphic supports partial transparency or an alpha channel.
	Transparent	Indicates whether the image covers its rectangular area.
	TransparentColor	Determines which color of the bitmap is to be transparent when the bitmap is drawn.
	TransparentMode	Determines whether the TransparentColor property's value is automatically calculated or stored with the bitmap object.
	Width	Determines the maximum width of the graphics object in pixels.

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