Germán Diago wrote:
Hello. I'm implementing a custom widget, which is a Gtk::VBox and
contains a Gtk::Image and a label.
I want the widget to change color when the mouse goes over it (I just
want to change the VBox zone)
Looking at the documentation I found a way to change the color for
Gtk::VBox with a Gtk::EventBox, but
I don't know how to color it just when the mouse goes over it.
Any help, please?
You'll probably have to connect a slot to the
Gtk::Widget::signal_{enter,leave}_notify_event() signals (see
Gtk::Widget docs). See the book's signal chapter (
http://www.gtkmm.org/docs/gtkmm-2.4/docs/tutorial/html/sec-signals-overview.html)
to understand signals and the section on popup menus
(http://www.gtkmm.org/docs/gtkmm-2.4/docs/tutorial/html/sec-menus-popup.html)
to see a sample handler definition that works with Gdk events.
Here is the code:
class PhotoTile : public Gtk::VBox
{
private:
Gtk::VBox box_;
Gtk::Image image_;
Gtk::Label label_;
Gtk::EventBox evtbox_;
std::string imagename_;
public:
PhotoTile()
{
box_.set_spacing(12);
box_.set_border_width(12);
evtbox_.add(box_);
evtbox_.modify_bg(Gtk::STATE_NORMAL,
Gdk::Color("blue"));
}
void setImage(const std::string & imagepath)
{
image_.set(imagepath);
box_.pack_start(image_, false, false);
imagename_ =
std::string(Glib::path_get_basename(imagepath), 0,
Glib::path_get_basename(imagepath).find_last_of('.'));
label_.set_text("<b>" + imagename_ + "</b>");
label_.set_use_markup(true);
box_.pack_start(label_, false, false);
pack_start(evtbox_, false, false);
show_all();
}
};
And thanks for your time.
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--
José Alburquerque
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