TBitmap32

Hierarchy

TPersistent

Description

TBitmap32 extends TCustomBitmap32 with various methods and properties specific to the operating system's graphic subsystem. It provides methods for drawing on a device context (DC).

TBitmap32 does not implement its own low-level streaming or low-level file loading/saving. Instead, it uses streaming methods of temporal TBitmap or TPicture objects. This is an obvious performance penalty, however such approach allows using third-party libraries, which extend TGraphic class for various image formats support (JPEG, TGA, TIFF, GIF, PNG, etc.). When you install them, TBitmap32 will automatically obtain support for new image file formats in design time and in run time.

TBitmap32 overrides Assign and AssignTo methods (inherited from TPersistent) to provide compatibility with standard objects: TBitmap, TPicture and TClipboard in both directions. The design-time streaming to and from *.dfm files, inherited from TPersistent, is supported, but its realization is different from streaming with other stream types (See the source code for details).

Reference

Properties	Methods	Events
In TBitmap32:
BitmapHandle	CanvasAllocated	OnHandleChanged
BitmapInfo	DeleteCanvas
Canvas	HandleChanged
Font	LoadFromResourceID
Handle	LoadFromResourceName
Pixmap	RenderText
PixmapChanged	TextExtent
	TextHeight
	TextOut
	TextWidth
	UpdateFont
In TCustomBitmap32:
Backend	BeginMeasuring	OnAreaChanged
Bits	Clear	OnPixelCombine
Clipping	Create
ClipRect	Destroy
CombineMode	Draw
DrawMode	DrawTo
MasterAlpha	Empty
MeasuringMode	EndMeasuring
OuterColor	FillRect
PenColor	FlipHorz
Pixel	FlipVert
PixelPtr	FrameRect
Resampler	GetStippleColor
ResamplerClassName	HorzLine
ScanLine	Line
StippleCounter	LineTo
StippleStep	LoadFromFile
StretchFilter	LoadFromStream
WrapMode	MoveTo
	RaiseRectTS
	ResetAlpha
	ResetClipRect
	Roll
	Rotate
	SaveToFile
	SaveToStream
	SetPixel
	SetSize
	SetStipple
	VertLine
In TCustomMap:
Height	Delete	OnResize
Width	Resized
In TThreadPersistent:
LockCount	Lock
	Unlock
In TNotifiablePersistent:
UpdateCount	BeginUpdate	OnChange
	Changed
	EndUpdate