TPNGImage 1.43 help Download the archived PDF Table of contents Introduction Objects TPNGObject Properties AlphaScanline Chunks CompressionLevel Empty Filters Header Height InterlaceMethod MaxIdatSize TransparentColor TransparencyMode Scanline Width Pixels[] Methods AddtEXt Assign AssignHandle CreateAlpha Draw LoadError LoadFromFile LoadFromResourceID LoadFromResourceName LoadFromStream RemoveTransparency SaveToFile SaveToStream TPNGList Properties Count Item ItemFromClass Methods Add TChunk Properties Data DataSize Header Index Name Owner Methods Assign Create LoadFromStream ResizeData SaveToStream TChunkIEND TChunkIHDR Properties BitDepth ColorType CompressionMethod FilterMethod Height InterlaceMethod Width TChunkgAMA Properties Gamma TChunkPLTE Properties Item Count TChunktRNS Properties TransparentColor PaletteValues TChunkIDAT TChunktIME Properties Day Hour Minute Month Second Year TChunktEXt Properties Keyword Text Unit methods ByteSwap RegisterChunk Update_Crc Articles A guide to png transparency Introduction COLOR_RGBALPHA and COLOR_GRAYSCALEALPHA COLOR_PALETTE Convert to partial transparent About chunks Png interlacing About the unit triggers Disabling use of heavy VCL units Translating the library Network order CRC - Cylindric Rundancy Check Errors handling About filters Bit and Partial transparency Direct access to pixels (scanline) Examples Convert tbitmap to tpngobject Reading textual chunks New TChunk descendent Drawing png over other formats Component features Installing the component License Author and website next page