TIOParams.ImageIndex

Declaration

property ImageIndex: Integer;

Description

Specifies the index of the next page/frame to load. You must set this property before calling read methods like LoadFromFile.
This property is valid for all multi-page file formats (TIFF, GIF, DCX, Dicom, etc..).

Notes:
- Setting ImageIndex is the same as setting the relevant format image index: TIFF_ImageIndex, GIF_ImageIndex, ICO_ImageIndex or CUR_ImageIndex.
- If attached to a TImageEnView with the PDFViewer enabled, setting ImageIndex will set the PageIndex

Demo

Examples

// Load the second page of the TIFF
ImageEnView1.IO.Params.ImageIndex := 1;
ImageEnView1.IO.LoadFromFile('C:\input.tif');

// Print all pages of a TIFF
Printer.Title := 'TIFF Pages';
Printer.BeginDoc();
for I := 0 to ImageEnView1.IO.Params.ImageCount - 1 do
begin
  ImageEnView1.IO.Params.ImageIndex := I;
  ImageEnView1.IO.LoadFromFile('C:\input.tif');
  ImageEnView1.IO.PrintImage();
end;
Printer.EndDoc();

// Load the third image in a TIFF and save it to JPEG
aBmp := TIEBitmap.create;
aBmp.ParamsEnabled := True; // Load params with the image
aBmp.Params.ImageIndex := 2;
aBmp.Read( 'C:\MyTiffDoc.TIFF' );
aBmp.Params.JPEG_Quality := 70;
aBmp.Write( 'D:\Page3.jpeg' );
aBmp.Free;

// Load a GIF and save each of its pages as a BMP File
ImageEnView1.IO.LoadFromFile('C:\input.gif'); // Load first image to get value for Params.ImageCount
for I := 0 to ImageEnView1.IO.Params.ImageCount - 1 do
begin
  ImageEnView1.IO.Params.ImageIndex := I;
  ImageEnView1.IO.LoadFromFile('C:\input.gif');
  ImageEnView1.IO.SaveToFile( format( 'D:\image_%d.bmp', [ I + 1 ]);
end;

See Also

- ImageCount
- Seek

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