GDI+ Image Encoders and Decoders

Saving an image in a certain format (such as JPEG or PNG) takes a couple of steps in the C++ version. You would have to enumerate all encoders that are installed on the system to find the encoder you are interested in. This enumeration would also take a couple of steps. For standard formats like BMP, GIF, JPEG, PNG and TIFF, this library allows you the specify the format directly without any encoder enumeration:

var
  Bitmap: IGPBitmap;
begin
  Bitmap := TGPBitmap.Create(200, 100);
  Bitmap.Save('Output.png', TGPImageFormat.Png);
end;

You can still enumerate encoders if you need to. This has been simplified too since the class function TGPImageCodecInfo.GetImageEncoders returns an array of all installed encoders:

var
  Bitmap: IGPBitmap;
  Codec: IGPImageCodecInfo;
begin
  Bitmap := TGPBitmap.Create(200, 100);
  for Codec in TGPImageCodecInfo.GetImageEncoders do
    if SameText(Codec.MimeType, 'image/targa') then
    begin
      Bitmap.Save('Output.tga', Codec);
      Break;
    end;
end;

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