TransformJPEG Method (GdPictureImaging)

In This Topic

Applies transformation to a JPEG image without loss of information. When a JPEG image is compressed, some of the information in the image is lost. If you open a JPEG file, modify the image, and save it to another JPEG file, the quality will decrease. This method allows to opening / modifying / saving JPEG images, without loss of information.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function TransformJPEG( _
   ByVal InputFile As String, _
   ByVal OutputFile As String, _
   ByVal Transformation As JPEGTransformation _
) As GdPictureStatus

public GdPictureStatus TransformJPEG( 
   string InputFile,
   string OutputFile,
   JPEGTransformation Transformation
)

public function TransformJPEG( 
    InputFile: String;
    OutputFile: String;
    Transformation: JPEGTransformation
): GdPictureStatus;

public function TransformJPEG( 
   InputFile : String,
   OutputFile : String,
   Transformation : JPEGTransformation
) : GdPictureStatus;

public: GdPictureStatus TransformJPEG( 
   string* InputFile,
   string* OutputFile,
   JPEGTransformation Transformation
)

public:
GdPictureStatus TransformJPEG( 
   String^ InputFile,
   String^ OutputFile,
   JPEGTransformation Transformation
)

Parameters

InputFile: The path of the image to transform.
OutputFile: The path of the transformed image.
Transformation: The JPEG transformation to apply. A member of the JPEGTransformation enumeration.

Return Value

A member of the GdPictureStatus enumeration.

Remarks

This method requires the Image Documents component to run.

The image's width and height have to be divisible by 16, otherwise, and Invalid Parameter will be returned.

Reference

GdPictureImaging Class
GdPictureImaging Members