GetAttachedThumbnail Method (GdPictureImaging)
In This Topic
Returns, if available, the tumbnail attached to a specific GdPicture image.
Syntax
'Declaration
Public Function GetAttachedThumbnail( _
ByVal As Integer _
) As Integer
public int GetAttachedThumbnail(
int
)
public function GetAttachedThumbnail(
: Integer
): Integer;
public function GetAttachedThumbnail(
: int
) : int;
public: int GetAttachedThumbnail(
int
)
public:
int GetAttachedThumbnail(
int
)
Parameters
- ImageID
- GdPicture image identifier.
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 thumbnail Image. The ReleaseGdPictureImage() method must be subsequently used to release the image from the memory.
Example
Removing the existing thumbnail and creating and attaching a new one to a GdPicture image.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg");
int thumbnailID = 0;
if (gdpictureImaging.HasAttachedThumbnail(imageID))
{
// Get the already attached thumbnail and save it as an image, then detach it.
thumbnailID = gdpictureImaging.GetAttachedThumbnail(imageID);
gdpictureImaging.SaveAsJPEG(thumbnailID, "thumbnail.jpg", 75);
gdpictureImaging.DetachThumbnail(imageID);
gdpictureImaging.ReleaseGdPictureImage(thumbnailID);
}
// Create a new thumbnail with a system-defined size and attach it to an image.
thumbnailID = gdpictureImaging.CreateThumbnail(imageID, 0, 0);
gdpictureImaging.AttachThumbnail(imageID, thumbnailID);
// Release used resources.
gdpictureImaging.ReleaseGdPictureImage(thumbnailID);
gdpictureImaging.ReleaseGdPictureImage(imageID);
}
Example
Removing the existing thumbnail and creating and attaching a new one to a GdPicture image.
using (GdPictureImaging gdpictureImaging = new GdPictureImaging())
{
int imageID = gdpictureImaging.CreateGdPictureImageFromFile("image.jpg");
int thumbnailID = 0;
if (gdpictureImaging.HasAttachedThumbnail(imageID))
{
// Get the already attached thumbnail and save it as an image, then detach it.
thumbnailID = gdpictureImaging.GetAttachedThumbnail(imageID);
gdpictureImaging.SaveAsJPEG(thumbnailID, "thumbnail.jpg", 75);
gdpictureImaging.DetachThumbnail(imageID);
gdpictureImaging.ReleaseGdPictureImage(thumbnailID);
}
// Create a new thumbnail with a system-defined size and attach it to an image.
thumbnailID = gdpictureImaging.CreateThumbnail(imageID, 0, 0);
gdpictureImaging.AttachThumbnail(imageID, thumbnailID);
// Release used resources.
gdpictureImaging.ReleaseGdPictureImage(thumbnailID);
gdpictureImaging.ReleaseGdPictureImage(imageID);
}
See Also