Widgets Without X-Windows

• Programming with gtkmm 3

Some Widgets do not have an associated X-Window, so they therefore do not receive X events. This means that the signals described in the X event signals section will not be emitted. If you want to capture events for these widgets you can use a special container called Gtk::EventBox, which is described in the EventBox section.

Here is a list of some of these Widgets:

Gtk::Alignment
Gtk::Arrow
Gtk::Bin
Gtk::Box
Gtk::Button
Gtk::CheckButton
Gtk::Fixed
Gtk::Image
Gtk::Item
Gtk::Label
Gtk::MenuItem
Gtk::Notebook
Gtk::Paned
Gtk::Pixmap
Gtk::RadioButton
Gtk::Range
Gtk::ScrolledWindow
Gtk::Separator
Gtk::Table
Gtk::Toolbar
Gtk::AspectFrame
Gtk::Frame
Gtk::VBox
Gtk::HBox
Gtk::VSeparator
Gtk::HSeparator

These widgets are mainly used for decoration or layout, so you won't often need to capture events on them. They are intended to have no X-Window in order to improve performance.