ImageEn, unit imageenproc

TImageEnProc.ReadHiddenText

TImageEnProc.ReadHiddenText


Declaration

function ReadHiddenText(): AnsiString;


Description

ReadHiddenText and ReadHiddenData return the hidden text or raw data written with WriteHiddenText or WriteHiddenData. Hidden information is stored inside the image (uses a pixel color modulation) and is independent of the image file format.
Use ReadHiddenText to read a simple string or ReadHiddenData to read a buffer of raw data.

Note:
 The hidden text will be lost if you save the image as Jpeg or if you subsample the colors
 If the image PixelFormat is not ie24RGB, it will be converted


Demo

Demo  Demos\ImageEditing\CompleteEditor\PhotoEn.dpr


Example

// Hides "copyright by XYZ" in 'alfa.tif'
ImageEnView1.Proc.WriteHiddenText('Copyright by XYZ');
ImageEnView1.IO.SaveToFile('alfa.tif');

// Read simple string from 'alfa.tif'
ImageEnView1.IO.LoadFromFile('alfa.tif');
mystring := ImageEnView1.Proc.ReadHiddenText();


See Also

Public Method  ClearHiddenText
Public Method  GetHiddenDataSpace
Public Method  ReadHiddenData
Public Method  WriteHiddenData
Public Method  WriteHiddenText