class Gtk::PropertyExpression

Overview

A GObject property value in a GtkExpression.

Defined in:

lib/gi-crystal/src/auto/gtk-4.0/property_expression.cr

Constructors

Class Method Summary

Instance Method Summary

Instance methods inherited from class Gtk::Expression

bind(target : GObject::Object, property : String, this_ : GObject::Object?) : Gtk::ExpressionWatch bind, evaluate(this_ : GObject::Object?, value : _) : Bool evaluate, finalize finalize, is_static : Bool is_static, to_unsafe : Pointer(Void) to_unsafe, value_type : UInt64 value_type, watch(this_ : GObject::Object?, notify : Gtk::ExpressionNotify) : Gtk::ExpressionWatch watch

Class methods inherited from class Gtk::Expression

g_type : UInt64 g_type

Constructor Detail

def self.new(this_type : UInt64, expression : Gtk::Expression?, property_name : String) : self #

Creates an expression that looks up a property.

The object to use is found by evaluating the #expression, or using the this argument when #expression is NULL.

If the resulting object conforms to this_type, its property named property_name will be queried. Otherwise, this expression's evaluation will fail.

The given this_type must have a property with property_name.


def self.new #

Initialize a new PropertyExpression.


def self.new_for_pspec(expression : Gtk::Expression?, pspec : GObject::ParamSpec) : self #

Creates an expression that looks up a property.

The object to use is found by evaluating the #expression, or using the this argument when #expression is NULL.

If the resulting object conforms to this_type, its property specified by #pspec will be queried. Otherwise, this expression's evaluation will fail.


Class Method Detail

def self.g_type : UInt64 #

Returns the type id (GType) registered in GLib type system.


Instance Method Detail

def expression : Gtk::Expression? #

Gets the expression specifying the object of a property expression.


def pspec : GObject::ParamSpec #

Gets the GParamSpec specifying the property of a property expression.