void gtk_combo_box_popup_for_device ( GtkComboBox* combo_box, GdkDevice* device )
Pops up the menu or dropdown list of
combo_box, the popup window
will be grabbed so only
device and its associated pointer/keyboard
are the only
GdkDevices able to send events to it.
Available since: 3.0
The data is owned by the caller of the function.