#Timage png delphi how to#
#Timage png delphi windows#

TCustomCompressionStream = class(TStream) TCompressionLevel = (zcNone, zcFastest, zcDefault, zcMax) TFree = procedure(Opaque, Block: Pointer) TAlloc = function(Opaque: Pointer Items, Size: Integer): Pointer Procedure SetSize( const NewSize: Int64) override įunction Seek( const Offset: Int64 Origin: TSeekOrigin): Int64 override Ĭonstructor Create( const FileName: string Mode: Word) overload Ĭonstructor Create( const FileName: string Mode: Word Rights: Cardinal) overload Procedure SetSize(NewSize: Longint) override įunction Write( const Buffer Count: Longint): Longint override Procedure LoadFromFile( const FileName: string) Procedure LoadFromStream(Stream: TStream) Property Capacity: Longint read FCapacity write SetCapacity Procedure SetCapacity(NewCapacity: Longint) įunction Realloc( var NewCapacity: Longint): Pointer virtual TMemoryStream = class(TCustomMemoryStream) Property Data: Pointer read FData write FData

Procedure SaveToFile( const FileName: string) Procedure SetPointer(Ptr: Pointer Size: Longint) įunction Read( var Buffer Count: Longint): Longint override įunction Seek(Offset: Longint Origin: Word): Longint override Property Size: Int64 read GetSize write SetSize64 Property Position: Int64 read GetPosition write SetPosition Procedure WriteBuffer( const Buffer Count: Longint) įunction CopyFrom(Source: TStream Count: Int64): Int64 Procedure ReadBuffer( var Buffer Count: Longint) Procedure SetSize( const NewSize: Int64) overload virtual įunction Read( var Buffer Count: Longint): Longint virtual abstract įunction Write( const Buffer Count: Longint): Longint virtual abstract įunction Seek(Offset: Longint Origin: Word): Longint overload virtual įunction Seek( const Offset: Int64 Origin: TSeekOrigin): Int64 overload virtual Procedure SetSize(NewSize: Longint) overload virtual Procedure SetSize64( const NewSize: Int64) Procedure SetPosition( const Pos: Int64) TSeekOrigin = (soBeginning, soCurrent, soEnd) TNotifyEvent = procedure(Sender: TObject) of object You can use LoadFromFile() and SaveToFile() for simple file loading/saving, and Assign() to/from other TGraphic classes.Windows, vcl.Graphics, Vcl.Forms,, Vcl.ExtCtrls, CompressionStreamUnit įunction SaveShotToStream(PIC: TBitmap): String īitBlt(, 0, 0, Result.Width, Result.Height, Desktop, 0, 0, SRCCOPY) TWICImage is used very similarly to the TBitmap. If your application is expected to run apart from these requirements, then you will need to recognize this yourself and handle your imaging differently.

#Timage png delphi windows#

IMPORTANT: TWICImage is only available on Windows XP SP3 or higher operating systems and relies on DirectX runtime. The formats which are supported depend on the formats which are registered inside of Windows. It wraps the functionality of Microsoft's WIC image. WIC Image stands for Windows Imaging Component. This class, based on a TGraphic (just like a TBitmap), allows you to load virtually any type of image file.

#Timage png delphi how to#

The question is - how to load any format of image into a TBitmap?ĭelphi VCL's Graphics unit contains another class called TWICImage. The TBitmap is widely used as the most standard graphic for performing any type of imaging in Delphi. It is rather common that developers wish to load various types of files into a TBitmap for manipulation, such as JPEG, PNG, or TIFF.