#include <gtkmm/expression.h>
Inheritance diagram for Gtk::ObjectExpression< T >:
Static Public Member Functions | |
| static GType | get_type () |
| Get the GType for this class, for use with the underlying GObject type system. | |
| static Glib::RefPtr< ObjectExpression< T > > | create (const T & object) |
| Creates an expression evaluating to the given object with a weak reference. | |
Additional Inherited Members | |
 Public Types inherited from Gtk::Expression< T > | |
| using | ValueType = T |
| Public Types inherited from Gtk::ExpressionBase | |
| using | SlotNotify = sigc::slot< void()> |
| For instance: void on_notify();. | |
| Public Member Functions inherited from Gtk::Expression< T > | |
| std::optional< T > | evaluate (const Glib::RefPtr< Glib::ObjectBase > & this_) |
| Evaluates the given expression and on success returns the result. | |
| Glib::RefPtr< ExpressionWatch< T > > | watch (const Glib::RefPtr< Glib::ObjectBase > & this_, const SlotNotify & notify) |
| Installs a watch for the expression that calls the notify function whenever the evaluation of the expression may have changed. | |
| template<class T2 > | |
| Glib::RefPtr< ExpressionWatch< T > > | bind (const Glib::PropertyProxy< T2 > & property, const Glib::RefPtr< Glib::ObjectBase > & this_=nullptr) |
| Bind a target's property to the expression. | |
| template<class T2 > | |
| Glib::RefPtr< ExpressionWatch< T > > | bind (const Glib::PropertyProxy_WriteOnly< T2 > & property, const Glib::RefPtr< Glib::ObjectBase > & this_=nullptr) |
| Bind a target's property to the expression. | |
| Public Member Functions inherited from Gtk::ExpressionBase | |
| void | reference () const |
| Increment the reference count for this object. | |
| void | unreference () const |
| Decrement the reference count for this object. | |
| GtkExpression * | gobj () |
| Provides access to the underlying C instance. | |
| const GtkExpression * | gobj () const |
| Provides access to the underlying C instance. | |
| GtkExpression * | gobj_copy () const |
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. | |
| ExpressionBase ()=delete | |
| ExpressionBase (const ExpressionBase &)=delete | |
| ExpressionBase & | operator= (const ExpressionBase &)=delete |
| GType | get_value_type () const |
Gets the GType that this expression evaluates to. | |
| bool | is_static () const |
| Checks if the expression is static. | |
| Protected Member Functions inherited from Gtk::ExpressionBase | |
| void | operator delete (void *, std::size_t) |
| Related Functions inherited from Gtk::ExpressionBase | |
| Glib::RefPtr< Gtk::ExpressionBase > | wrap (GtkExpression * object, bool take_copy=false) |
| A Glib::wrap() method for this object. | |
Member Function Documentation
◆ create()
template <class T >
|
static |
Creates an expression evaluating to the given object with a weak reference.
Once the object is disposed, it will fail to evaluate. This expression is meant to break reference cycles.
If you want to keep a reference to object, use Gtk::ConstantExpression::create().
- Parameters
-
object Object to watch.
- Returns
- A new Gtk::Expression.
◆ get_type()
template <class T >
|
static |
Get the GType for this class, for use with the underlying GObject type system.
