You need to say something like: (set! the-image-id (car (gimp-image-new 10 10 GRAY))) (set! the-layer-id (car (gimp-layer-new the-image-id 10 10 GRAYA_IMAGE "a named layer" 100 NORMAL))) (gimp-image-add-layer the-image-id the-layer-id -1) In my opinion the PDB documentation isn't helpful in this case, because the mnemonics are wrong, but paying close attention to the details will show you what went bad: The value of GRAY_IMAGE (which you're using in gimp-image-new) is 2, which corresponds to an image type of GIMP_INDEXED -- which is obviously not what you wanted. Then when you tried to add the, correctly created, layer, it complained. Helvetix On Sat, Jun 07, 2003 at 04:47:54PM -0400, Douglas Lewan wrote: > All, > > I've just started hacking in the Gimp via scheme and clearly don't > understand (gimp-image-add-layer). > > What I've read suggests that the following ought to get me a new layer > in an image. > > => (set! the-image-id (car (gimp-image-new 10 10 GRAY_IMAGE))) > > 0 > => (set! the-layer-id (car (gimp-layer-new the-image-id 10 10 GRAY_IMAGE "a > named layer" 100 NORMAL))) > > 2 > => (gimp-image-add-layer the-image-id the-layer-id -1) > > ERROR: Procedural database execution failed: > (gimp_image_add_layer 0 2 -1) > > A "procedural database execution failure" suggests that something quite > fundamental is going on. (It's not just me getting types or syntax > confused.) > > Can anyone help? Can anyone tell me how I might investigate this > intelligently? > > Thanks. > -- > ,Doug > Douglas Lewan > email: d_lewan2000@xxxxxxxxx <mailto:d_lewan2000@xxxxxxxxx> > cell: 908 7207 908 > > Design: The activity of preparing for a > design review. >
