function Allocate(ImageWidth, ImageHeight: integer; ImagePixelFormat: TIEPixelFormat=ie24RGB): boolean; overload; function Allocate(ImageWidth, ImageHeight: integer; FillColor: TColor; Alpha: Integer = 255): boolean; overload;
Description
Prepares space for an image with ImageWidth and ImageHeight sizes.
Second overload creates an ie24RGB image, fills with the specified color and sets the alpha (from 0: Fully Transparent - 255: Fully Opaque)
Returns true on success.