Hi again, I've made a lot of progress on this task - but I still am having trouble with manipulating the appearance of the Cursor. Apparently the approach for doing this has changed between gtkmm 2 and 3, and apparently all the solutions I can find via Google are for gtkmm 2. How can I change the default appearance of my cursor from the default cursor to something else (e.g. a CrossHair) in gtkmm 3?
Thanks. Jim Tilton -----Original Message----- From: gtk-app-devel-list-boun...@gnome.org [mailto:gtk-app-devel-list-boun...@gnome.org] On Behalf Of Tilton, James C. (GSFC-6063) Sent: Monday, April 02, 2012 12:00 PM To: gtk-app-devel-list@gnome.org Subject: Making a cursor (cross hair) track between image displays Hi GTK+ application developers! I have developed an application using gtkmm in which I display related images in multiple Gtk::Window's. I have two types of "display images." One is based on Gtk::Image and the other is based on Gtk::DrawingArea. For the Gtk::Image case I add the Gtk::Image to a Gtk::EventBox, which in turn I add to a Gtk::ScrolledWindow. For the Gtk::DrawingArea, is directly add the Gtk::DrawingArea to a Gtk::ScrolledWindow (without the intervening Gtk::EventBox). When the image sizes exceed the ScrolledWindow display area, I use the Gtk::Adjustment associated with each Gtk::ScrolledWindow to have the pan-scrolling of each window track each other. When I place the cursor in one of the display images, I would like to have a cross hair appear at the cursor location of the window in which the cursor is placed at the location currently pointed to by the cursor. I would ALSO like to have a similar cross hair appear in each of the other associated display images. How can I make this happen with GTK+/gtkmm? I've looked for examples of this and haven't found any. Can anyone point me in the right direction for implementing this feature in my application? (In my current application, the normal arrow cursor appears in just one window, and if I hold the either the left or right mouse button down, I have the column and row location and image data value(s) appear in text below the Scrolled Window image display.) Thanks. Jim Tilton ________________________________ Dr. James C. Tilton Voice: 301-286-9510 NASA Goddard Space Flight Center FAX: 301-286-1776 Mail Code 606.3 E-Mail: james.c.til...@nasa.gov<mailto:james.c.til...@nasa.gov> (Computational & Information Sciences and Technology Office) Greenbelt, MD 20771 URLs: http://ipp.gsfc.nasa.gov/ft_tech_rhseg.shtm and http://science.gsfc.nasa.gov/606.3/TILTON/ _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
