GdPicture image identifier.
Example





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FxNegative Method (GdPictureImaging)

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Performs a negative effect (color inversion) on a GdPicture image or on an area of a GdPicture image defined by SetROI() method.
Syntax
'Declaration

 


Public Function FxNegative( _

   ByVal ImageID As Integer _

) As GdPictureStatus
public GdPictureStatus FxNegative( 

   int ImageID

)
public function FxNegative( 

    ImageID: Integer

): GdPictureStatus; 
public function FxNegative( 

   ImageID : int

) : GdPictureStatus;
public: GdPictureStatus FxNegative( 

   int ImageID

) 
public:

GdPictureStatus FxNegative( 

   int ImageID

)

Parameters

ImageID
GdPicture image identifier.

Return Value

A member of the GdPictureStatus enumeration.
Remarks
This method is used in the "Image Processing" Demo.
Example
Performing a negative effect on a GdPicture image.
Applying a negative effect on a single jpeg image.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())

{

    // LoadInMemory parameter is set to true in order to be able to update the input file.

    int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", true);

    gdpictureImaging.FxNegative(imageID);

    gdpictureImaging.SaveAsJPEG(imageID, "image.jpg", 75);

    gdpictureImaging.ReleaseGdPictureImage(imageID);

}
Applying the fire effect and negative effect to two duplicates of the same image.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())

{

    // Create two duplicate gdpicture images from the input file.

    int imageID1 = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg", false);

    int imageID2 = gdpictureImaging.CreateClonedGdPictureImage(imageID1);

 

    // Process both of your images (differently).

    gdpictureImaging.FxFire(imageID1);

    gdpictureImaging.FxNegative(imageID2);

 

    // Save your images in the same multipage tif file.

    gdpictureImaging.TiffSaveAsMultiPageFile(imageID1, "images.tif", TiffCompression.TiffCompressionAUTO);

    gdpictureImaging.TiffAddToMultiPageFile(imageID1, imageID2);

    gdpictureImaging.TiffCloseMultiPageFile(imageID1);

    gdpictureImaging.ReleaseGdPictureImage(imageID1);

    gdpictureImaging.ReleaseGdPictureImage(imageID2);

}
See Also

Reference

GdPictureImaging Class
GdPictureImaging Members
CreateGdPictureImageFromFile(String) Method
ReleaseGdPictureImage Method