GtkAdjustment setters

[Kevin Ryde <user42@zip.com.au>]

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It'd be nice if there were setters for the GtkAdjustment fields.  If I
read the gtk doco right, it's normal for a program to mung them and
call gtk_adjustment_changed when wanting a new page size or whatever.

For the value field I guess there's gtk_adjustment_set_value, so
perhaps there's no need to directly set that, but apparently it's
valid to do so and later call gtk_adjustment_value_changed.

I get some joy from the diff below, if this is the right way to go
about it.

        * gtk-1.2.defs (GtkAdjustment): Add setters for the fields.


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--- gtk-1.2.defs.~1.5.~	2002-12-08 04:41:47.000000000 +1000
+++ gtk-1.2.defs	2002-12-29 13:24:19.000000000 +1000
@@ -1085,12 +1085,12 @@
 
 (define-object GtkAdjustment (GtkData)
   (fields
-   (float value)
-   (float lower)
-   (float upper)
-   (float step_increment)
-   (float page_increment)
-   (float page_size)))
+   (float value          (setter #t))
+   (float lower          (setter #t))
+   (float upper          (setter #t))
+   (float step_increment (setter #t))
+   (float page_increment (setter #t))
+   (float page_size      (setter #t))))
 
 (define-func gtk_adjustment_new
   GtkObject