Converts a GdPicture image to a 48-bits RGB color image. 

16 bits each are used for the red, green, and blue components.

public GdPictureStatus ConvertTo48BppRGB(
    int ImageID
);

Public Function ConvertTo48BppRGB(
    ByVal ImageID As Integer
) As GdPictureStatus

A member of the GdPictureStatus enumeration.