CreateGdPictureImageFromStream(Stream,DocumentFormat) Method
In This Topic
Creates a new GdPicture image from an image stored into a Stream Object. This method uses a GdPicture DocumentFormat enumerator.
Syntax
'Declaration
Public Overloads Function CreateGdPictureImageFromStream( _
ByVal As Stream, _
ByVal As DocumentFormat _
) As Integer
public int CreateGdPictureImageFromStream(
Stream ,
DocumentFormat
)
public function CreateGdPictureImageFromStream(
: Stream;
: DocumentFormat
): Integer;
public function CreateGdPictureImageFromStream(
: Stream,
: DocumentFormat
) : int;
public: int CreateGdPictureImageFromStream(
Stream* ,
DocumentFormat
)
public:
int CreateGdPictureImageFromStream(
Stream^ ,
DocumentFormat
)
Parameters
- Stream
- System.IO.Stream object storing the image data.
- ImageFormat
- A member of the DocumentFormat enumeration specifying the input image format.
Return Value
0: The image could not be created. Use the GetStat() method to determine the reason this method
failed.
Non-zero: GdPicture image identifier. The created image. The ReleaseGdPictureImage() method must be subsequently used to release the image from the memory.
Example
Cloning an area of a jpeg image into a new jpeg image using streams.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
using (System.IO.Stream inputStream = new System.IO.FileStream("image.jpg", System.IO.FileMode.Open))
{
int imageID1 = gdpictureImaging.CreateGdPictureImageFromStream(inputStream, GdPicture14.DocumentFormat.DocumentFormatJPEG);
//Clone an area of the source image into a mew image.
int imageID2 = gdpictureImaging.CreateClonedGdPictureImageArea(imageID1, 50, 50, 100, 250);
//Process the cloned image.
gdpictureImaging.FxPixelize(imageID2);
using (System.IO.Stream outputStream = new System.IO.FileStream("output.png", System.IO.FileMode.CreateNew))
{
//Save a result into a new image file.
gdpictureImaging.SaveAsStream(imageID2, outputStream, GdPicture14.DocumentFormat.DocumentFormatPNG, 6);
}
gdpictureImaging.ReleaseGdPictureImage(imageID2);
gdpictureImaging.ReleaseGdPictureImage(imageID1);
}
}
Example
Cloning an area of a jpeg image into a new jpeg image using streams.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
using (System.IO.Stream inputStream = new System.IO.FileStream("image.jpg", System.IO.FileMode.Open))
{
int imageID1 = gdpictureImaging.CreateGdPictureImageFromStream(inputStream, GdPicture14.DocumentFormat.DocumentFormatJPEG);
//Clone an area of the source image into a mew image.
int imageID2 = gdpictureImaging.CreateClonedGdPictureImageArea(imageID1, 50, 50, 100, 250);
//Process the cloned image.
gdpictureImaging.FxPixelize(imageID2);
using (System.IO.Stream outputStream = new System.IO.FileStream("output.png", System.IO.FileMode.CreateNew))
{
//Save a result into a new image file.
gdpictureImaging.SaveAsStream(imageID2, outputStream, GdPicture14.DocumentFormat.DocumentFormatPNG, 6);
}
gdpictureImaging.ReleaseGdPictureImage(imageID2);
gdpictureImaging.ReleaseGdPictureImage(imageID1);
}
}
See Also
