install_properties

Overrides the `GtkEditable` properties for class.

This is a helper function that should be called in class_init, after installing your own properties.

Note that your class must have "text", "cursor-position", "selection-bound", "editable", "width-chars", "max-width-chars", "xalign" and "enable-undo" properties for this function to work.

To handle the properties in your set_property and get_property functions, you can either use [func@Gtk.Editable.delegate_set_property] and [ func@Gtk.Editable.delegate_get_property] (if you are using a delegate), or remember the first_prop offset and add it to the values in the [enum@Gtk.EditableProperties] enumeration to get the property IDs for these properties.

Parameters:

object_class	a `GObjectClass`
first_prop	property ID to use for the first property

Returns:

the number of properties that were installed