On 2020-05-01 23:28, Josh Bialkowski via gtkmm-list wrote:
~~~
class PanZoomArea : public Gtk::DrawingArea {
_CLASS_GOBJECT(PanZoomArea, GtkPanZoomArea, GTK_PANZOOM_AREA,
Gtk::DrawingArea, GtkDrawingArea);
~~~
You must use _CLASS_GTKOBJECT() instead of _CLASS_GOBJECT() for a widget.
_CLASS_GTKOBJCT() is defined in gtkmm/tools/m4/class_gtkobject.m4. You
won't find it in glibmm.
Don't know if this is the only error.
Kjell
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