ObjectG.bindProperty

Creates a binding between source_property on source and target_property on target.

Whenever the source_property is changed the target_property is updated using the same value. For instance:

g_object_bind_property (action, "active", widget, "sensitive", 0);

Will result in the "sensitive" property of the widget #GObject instance to be updated with the same value of the "active" property of the action #GObject instance.

If flags contains gobject.types.BindingFlags.Bidirectional then the binding will be mutual: if target_property on target changes then the source_property on source will be updated as well.

The binding will automatically be removed when either the source or the target instances are finalized. To remove the binding without affecting the source and the target you can just call gobject.object.ObjectG.unref on the returned #GBinding instance.

Removing the binding by calling gobject.object.ObjectG.unref on it must only be done if the binding, source and target are only used from a single thread and it is clear that both source and target outlive the binding. Especially it is not safe to rely on this if the binding, source or target can be finalized from different threads. Keep another reference to the binding and use gobject.binding.Binding.unbind instead to be on the safe side.

A #GObject can have multiple bindings.

Parameters

sourceProperty string

the property on source to bind

target gobject.object.ObjectG

the target #GObject

targetProperty string

the property on target to bind

flags gobject.types.BindingFlags

flags to pass to #GBinding

Return Value

Type: gobject.binding.Binding

the #GBinding instance representing the binding between the two #GObject instances. The binding is released whenever the #GBinding reference count reaches zero.