TIEMultiBitmap.Params

Declaration

property Params[idx: integer]: TIOParams;

Description

Provides access to the TIOParams object for the image idx.
The parameters are updated when loading from files or streams. You can modify these parameters before saving images.

Note:
◼If ParamsEnabled is false, Params are not updated when assigning or appending
◼To propogate compression params to all frames of a multi-frame image, use DuplicateCompressionInfo

Examples

// Change the compression method for a TIFF file
MBitmap := TIEMultiBitmap.Create();
MBitmap.ParamsEnabled := True;
MBitmap.LoadFromFile( 'C:\MyImage.tiff' );
MBitmap.Params[ 0 ].TIFF_Compression := ioTIFF_G4FAX;
MBitmap.DuplicateCompressionInfo();
MBitmap.SaveToFile( 'C:\OutImage.tiff' );
MBitmap.Free;

// Which is the same as:
MBitmap := TIEMultiBitmap.Create();
MParams := TIOMultiParams.Create();
MBitmap.LoadFromFile( 'C:\MyImage.tiff', MParams );
for i := 0 to MBitmap.count do
  MParams[i].TIFF_Compression := ioTIFF_G4FAX;
MBitmap.SaveToFile( 'C:\OutImage.tiff', MParams );
MParams.Free();
MBitmap.Free;

// Convert a TIFF to PDF with "US Letter" paper size
mbmp := TIEMultiBitmap.Create();
mbmp.ParamsEnabled := True;
mbmp.LoadFromFile('D:\Input.tif');
for i := 0 to mbmp.Count-1 do
begin
  mbmp.Params[i].PDF_PaperSize   := iepLetter;
  mbmp.Params[i].PDF_Compression := ioPDF_JPEG;      // or ioPDF_G4FAX for monochrome images
  mbmp.Params[i].JPEG_Quality    := 90;
end;
IEGlobalSettings().PDFEngine := ieenNative;          // For compression support
mbmp.SaveToFile('D:\Output.pdf');
mbmp.Free;

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