Declaration
function IndexOf(Marker: Byte): Integer;
Description
Finds the first marker and return its index. If a marker is not in the list, IndexOf returns -1.
Examples
// Read the JPEG_COM marker (Idx is Integer, Comment is string)
ImageEnView1.IO.LoadFromFile('C:\image.jpg');
Idx := ImageEnView1.IO.Params.JPEG_MarkerList.IndexOf(JPEG_COM);
Comment := ImageEnView1.IO.Params.JPEG_MarkerList.MarkerData[Idx];
// Now writes the JPEG_COM marker
Comment := 'This is the new comment';
ImageEnView1.IO.Params.JPEG_MarkerList.SetMarker(Idx, JPEG_COM, PAnsiChar(Comment), Length(Comment));
ImageEnView1.IO.SaveToFile('D:\Image.jpg');