>>>>> "Simon" == Simon Budig <Simon.Budig@xxxxxxxxxxx> writes: Simon> Images are *not* drawables. Images are drawable containers. Simon> Only Layers, Channels (and Selections which are kind of Simon> special case of channels) are drawables. Okay, then how does one determine the type of an image? Do I have to iterate over the layers to find the type? Can an image have layers which are of different types than the parent (e.g., a grayscale layer in an RGB image)? roland -- PGP Key ID: 66 BC 3B CD Roland B. Roberts, PhD RL Enterprises roland@xxxxxxxxxxx 76-15 113th Street, Apt 3B roland@xxxxxxxxxxxxx Forest Hills, NY 11375