Hi, On Mon, Feb 11, 2002 at 07:59:04PM +0100, Jaeger, Gerhard wrote: > I'm currently implementing a custom gamma table support > for the Plustek backend, not a thing so far BUT > when will xscanimage update the changes a user made > or does it never update on its own, do I need an extra > button to submit the changes? > > Any hints are welcome - the SANE_GET_OPTIONS/SET_OPTIONS > stuff is implementend, but never called for gamma tables...
sane_control_option with SANE_ACTION_SET_VALUE is called once: before the actual scan starts. See src/gtk_glue.c: /* Ensure sure the device has up-to-date option values. Except for vectors, all option values are kept current. Vectors are downloaded into the device during this call. */ void gsg_sync (GSGDialog *dialog) The SANE_ACTION_GET_VALUE is called when building the gtk_gamma_curve widget: static GtkWidget* curve_new (GSGDialog *dialog, int optnum) Called by static void vector_new (GSGDialog * dialog, GtkWidget *vbox, int num_vopts, int *vopts) hth, Henning
