Create 

This is Create, a member of class TPNGFileFormat. 

Create 

This is Create, a member of class TNetworkGraphicsFileFormat. 

CheckOptionsValidity 

Descendants use this method to check if their options (registered with constant Ids for SetOption/GetOption interface or accessible as properties of descendants) have valid values and make necessary changes. 

TestFormat 

Returns True if data located in source identified by Handle represent valid image in current format. 

Create 

This is Create, a member of class TImageFileFormat. 

Destroy 

This is Destroy, a member of class TImageFileFormat. 

CheckOptionsValidity 

Descendants use this method to check if their options (registered with constant Ids for SetOption/GetOption interface or accessible as properties of descendants) have valid values and make necessary changes. 

LoadFromFile 

Loads images from file source. 

LoadFromMemory 

Loads images from memory source. 

LoadFromStream 

Loads images from stream source. 

MakeCompatible 

Makes Image compatible with this file format (that means it is in one of data formats in Supported formats set). 

SaveToFile 

Saves images to file. 

SaveToMemory 

Saves images to memory. 

SaveToStream 

Saves images to stream. 

TestFileName 

Resturns True if the given FileName matches filter for this file format. 

TestFormat 

Returns True if data located in source identified by Handle represent valid image in current format. 

LoadAnimated 

This is LoadAnimated, a member of class TPNGFileFormat. 

CompressLevel 

Sets ZLib compression level used when saving images with lossless compression. 

LossyAlpha 

Defines whether alpha channel of lossy MNG frames or JNG images is lossy compressed too. 

LossyCompression 

Specifies whether MNG animation frames are saved with lossy or lossless compression. 

PreFilter 

Sets precompression filter used when saving images with lossless compression. 

Progressive 

Specifies whether images are saved in progressive format when saving lossy MNG frames or JNG images. 

Quality 

Specifies compression quality used when saving lossy MNG frames or JNG images. 

CanLoad 

Indicates whether images in this format can be loaded. 

CanSave 

Indicates whether images in this format can be saved. 

Extensions 

List of filename extensions for this format. 

IsMultiImageFormat 

Indicates whether images in this format can contain multiple image levels. 

Masks 

List of filename mask that are used to associate filenames with TImageFileFormat descendants. 

Name 

Description of this format. 

SupportedFormats 

Set of TImageFormats supported by saving functions of this format. 

 

public 

 

virtual 

 

published 

 

read only