TPNGFileFormat Class Members
Members
Methods
This is Create, a member of class TPNGFileFormat. 
TNetworkGraphicsFileFormat Class
This is Create, a member of class TNetworkGraphicsFileFormat. 
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. 
Returns True if data located in source identified by Handle represent valid image in current format. 
TImageFileFormat Class
This is Create, a member of class TImageFileFormat. 
This is Destroy, a member of class TImageFileFormat. 
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. 
Loads images from file source. 
Loads images from memory source. 
Loads images from stream source. 
Makes Image compatible with this file format (that means it is in one of data formats in Supported formats set). 
Saves images to file. 
Saves images to memory. 
Saves images to stream. 
Resturns True if the given FileName matches filter for this file format. 
Returns True if data located in source identified by Handle represent valid image in current format. 
Properties
This is LoadAnimated, a member of class TPNGFileFormat. 
TNetworkGraphicsFileFormat Class
Sets ZLib compression level used when saving images with lossless compression. 
Defines whether alpha channel of lossy MNG frames or JNG images is lossy compressed too. 
Specifies whether MNG animation frames are saved with lossy or lossless compression. 
Sets precompression filter used when saving images with lossless compression. 
Specifies whether images are saved in progressive format when saving lossy MNG frames or JNG images. 
Specifies compression quality used when saving lossy MNG frames or JNG images. 
TImageFileFormat Class
Indicates whether images in this format can be loaded. 
Indicates whether images in this format can be saved. 
List of filename extensions for this format. 
Indicates whether images in this format can contain multiple image levels. 
List of filename mask that are used to associate filenames with TImageFileFormat descendants. 
Name 
Description of this format. 
Set of TImageFormats supported by saving functions of this format. 
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