Vcl.Imaging.jpeg.TJPEGImage Methods

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InheritedProtected
_AddRefprotectedIncrements the reference count for the interfaced object's interface.
_ReleaseprotectedDecrements the reference count for the interfaced object's interface.
AfterConstructionpublicObtains a reference to the Owner's interface.
AssignpublicCopies the jpeg image object and creates a new reference to the internal data source object.
AssignToprotected
BeforeDestructionpublicResponds before the first destructor executes.
CanLoadFromStreampublic
Changedprotected
CheckDisposedprotectedThis method is deprecated.
ClassInfopublicReturns a pointer to the run-time type information (RTTI) table for the object type.
ClassNamepublicReturns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
ClassNameIspublicDetermines whether an object is of a specific type.
ClassParentpublicReturns the type of the immediate ancestor of a class.
ClassTypepublicReturns the class reference for the object's class.
CleanupInstancepublicPerforms finalization on long strings, variants, and interface variables within a class.
CompresspublicForces the action of compression.
CreatepublicInstantiates a jpeg image object.
DefaultHandlerpublicProvides the interface for a method that processes message records.
DefinePropertiesprotectedSet virtual property for reading and writing graphic data stream.
DestroypublicDestroys an instance of a jpeg image object.
DIBNeededpublicDecompress the jpeg image into a bitmap.
DisableScaledDrawerpublicDisables scaled drawer for a graphic.
DispatchpublicCalls message-handling methods for the object, based on the contents of the Message parameter.
DisposeOf (deprecated)publicDisposeOf forces the execution of the destructor code in an object.
Drawprotected
DrawTransparentprotectedRender graphic onto canvas at rectangle, blending with canvas's background.
EnableScaledDrawerpublicEnables scaled drawer for a graphic
Equalsprotected
FieldAddresspublicReturns the address of a published object field.
FreepublicDestroys an object and frees its associated memory, if necessary.
FreeBitmapprotectedFrees the internal bitmap representation of the jpeg image.
FreeInstancepublicDeallocates memory allocated by a previous call to the NewInstance method.
GetDisposedprotectedGetter for the Disposed property.
GetEmptyprotected
GetHashCodepublicReturns an integer containing the hash code.
GetHeightprotected
GetInterfacepublicRetrieves a specified interface.
GetInterfaceEntrypublicReturns the entry for a specific interface implemented in a class.
GetInterfaceTablepublicReturns a pointer to a structure containing all of the interfaces implemented by a given class.
GetIsAnimatingprotected
GetNamePathpublicReturns the name of the object as it appears in the Object Inspector.
GetOwnerprotectedReturns the owner of an object.
GetPaletteprotected
GetSupportsPartialTransparencyprotectedIndicate whether graphic supports partial transparency.
GetTransparentprotectedSpecifies if graphic is drawn transparently.
GetWidthprotected
InheritsFrompublicDetermines the relationship of two object types.
InitInstancepublicInitializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
InstanceSizepublicReturns the size in bytes of each instance of the object type.
JPEGNeededpublicCreates a new TJPEGData object if the jpeg image only has a bitmap and a jpeg is needed.
LoadFromClipboardFormatpublicReads in a jpeg image from the Clipboard into the jpeg image object.
LoadFromFilepublicLoads a graphic image stored in a file.
LoadFromStreampublicLoads the jpeg image from a stream.
MethodAddresspublicReturns the address of a class method by name.
MethodNamepublicReturns the name of a class method by address.
NewBitmapprotectedCreates a new bitmap that holds the representation of the jpeg image.
NewImageprotectedCreates a new data object that holds the internal representation of the jpeg image.
NewInstancepublicAllocates memory for an instance of an object type and returns a pointer to that new instance.
operator ()public
ProgressprotectedGenerate OnProgress event when graphic is changing.
QualifiedClassNamepublicReturns the qualified name of the class.
QueryInterfacepublicReturns a reference to a specified interface if the object supports that interface.
ReadDataprotected
ReadStreamprotectedLoads the jpeg image from a stream.
SafeCallExceptionpublicHandles exceptions in methods declared using the safecall calling convention.
SaveToClipboardFormatpublicWrites a jpeg image to a variable in Clipboard format.
SaveToFilepublicSaves a graphics image to a file.
SaveToStreampublicWrites the jpeg data to a stream.
SetHeightprotected
SetPaletteprotectedSets the color palette of the jpeg image.
SetSizepublicSpecifies the size of the graphic.
SetTransparentprotectedSpecify if graphic should be drawn transparently.
SetWidthprotected
ToStringpublicReturns a string containing the class name.
UnitNamepublicReturns the name of the unit where the class is defined.
UnitScopepublicReturns the class's unit scope.
UpdateScaledDrawerpublic
WriteDataprotected