TIOParams.EXIF_HasEXIFData

Declaration

property EXIF_HasEXIFData: Boolean;

Description

If True, the loaded image contains EXIF information tags. EXIF data is commonly added by digital cameras to provide meta data on a photo.

Note: If you do not wish to maintain the original EXIF info, set EXIF_HasEXIFData to False before saving.

Important Note: If an image is assigned from a TImageEnView to another, the EXIF tags is NOT automatically assigned.
To maintain EXIF data in the second TImageEnView, you must also assign the EXIF Data. This applies to all ImageEn "Display" components including TImageEnView.

Typical situations:
1) You want to maintain the EXIF data untouched:
  Do nothing... (default behavior)

2) You want to set some EXIF fields, e.g.
  ImageEnView1.IO.Params.EXIF_Software := 'ImageEn';
  ImageEnView1.IO.Params.EXIF_HasEXIFData := true;

3) You want to remove all EXIF data:
  ImageEnView1.IO.Params.ResetEXIF();

Demo

Demos\InputOutput\EXIF\EXIF.dpr

Examples

// Remove EXIF data from image.jpg
ImageEnView1.IO.Params.EXIF_HasExifData := False;
ImageEnView1.IO.InjectJpegEXIF('D:\image.jpg');

// Update the GPS EXIF data in a file
io := TImageEnIO.create(nil);
try
  io.ParamsFromFile( FilenameStr );

  io.Params.EXIF_GPSLatitude  := GPSLatitudeFloat;
  io.Params.EXIF_GPSLongitude := GPSLongitudeFloat;
  io.Params.EXIF_GPSVersionID := GPS_Version_ID;
  io.Params.EXIF_HasEXIFData  := True;

  io.InjectJpegEXIF( FilenameStr );
finally
  io.Free;
end;

// Update EXIF date for the current file
ImageEnView1.IO.Params.EXIF_DateTime2 := Now;
ImageEnView1.IO.Params.EXIF_DateTimeOriginal2 := Now;
ImageEnView1.IO.Params.EXIF_HasEXIFData  := True;
ImageEnView1.IO.InjectJpegEXIF( ImageEnView1.IO.Params.Filename );

TIOParams.EXIF_HasEXIFData