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# Gtk::Builder Class Reference

Inheritance diagram for Gtk::Builder:

[legend]
List of all members.

## Detailed Description

Build an interface from a UI definition description.

This object represents an `instantiation' of an UI definition description. When one of these objects is created, the XML file is read, and the interface is created. The Gtk::Builder object then provides an interface for accessing the widgets in the interface by the names assigned to them inside the UI description.

Since gtkmm 2.12:

## Public Member Functions
bool | add_from_file (const std::string& filename)
| Parses a file containing a GtkBuilder UI definition and merges it with the current contents of builder .
bool | add_from_string (const char* buffer, gsize length)
| Parses a string containing a GtkBuilder UI definition and merges it with the current contents of builder .
bool | add_from_string (const Glib::ustring& buffer)
| Parses a string containing a GtkBuilder UI definition and merges it with the current contents of the builder.
Glib::RefPtr<Glib::Object> | get_object (const Glib::ustring& name)
| Gets the object named name .
Glib::ustring | get_translation_domain () const
| Gets the translation domain of builder .
template<class T_Widget>
void | get_widget (const Glib::ustring& name, T_Widget*& widget)
| Get a widget from the Builder file.
template<class T_Widget>
void | get_widget_derived (const Glib::ustring& name, T_Widget*& widget)
| This provides a pointer to a widget whose details are specified in the GtkBuilder file, but which is implemented by your own derived class.
const GtkBuilder* | gobj () const
| Provides access to the underlying C GObject.
GtkBuilder* | gobj ()
| Provides access to the underlying C GObject.
GtkBuilder* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
void | set_translation_domain (const Glib::ustring& domain)
| Sets the translation domain of builder .
virtual | ~Builder ()
## Static Public Member Functions
static Glib::RefPtr<Builder> | create ()
| Creates a new builder object.
static Glib::RefPtr<Builder> | create_from_file (const std::string& filename)
| Parses a file containing a GtkBuilder UI definition.
static Glib::RefPtr<Builder> | create_from_string (const Glib::ustring& buffer)
| Parses a string containing a GtkBuilder UI definition.
## Protected Member Functions
| Builder ()
GtkWidget* | get_cwidget (const Glib::ustring& name)
Gtk::Widget* | get_widget_checked (const Glib::ustring& name, GType type)
## Related Functions
(Note that these are not member functions.)
Glib::RefPtr<Gtk::Builder> | wrap (GtkBuilder* object, bool take_copy=false)
| A Glib::wrap() method for this object.

## Constructor & Destructor Documentation

virtual Gtk::Builder::~Builder | ( |  | ) | `[virtual]`

Gtk::Builder::Builder | ( |  | ) | `[protected]`

## Member Function Documentation

bool Gtk::Builder::add_from_file | ( | const std::string & | filename | ) |

Parses a file containing a GtkBuilder UI definition and merges it with the current contents of builder .

Parameters:

  | filename | The name of the file to parse.
  | error | Return location for an error, or `0`.

Returns:
  A positive value on success, 0 if an error occurred

Since gtkmm 2.12:

bool Gtk::Builder::add_from_string | ( | const char * | buffer,
|  | gsize | length |
| ) |  |  |

Parses a string containing a GtkBuilder UI definition and merges it with the current contents of builder .

Parameters:

  | buffer | The string to parse.
  | length | The length of buffer (may be -1 if buffer is nul-terminated).
  | error | Return location for an error, or `0`.

Returns:
  A positive value on success, 0 if an error occurred

Since gtkmm 2.12:

bool Gtk::Builder::add_from_string | ( | const Glib::ustring & | buffer | ) |

Parses a string containing a GtkBuilder UI definition and merges it with the current contents of the builder.

: the string to parse

Returns:
  true on success or false if an error occurred.

Exceptions:

  | Glib::MarkupError |

Since gtkmm 2.12:

static Glib::RefPtr<Builder> Gtk::Builder::create | ( |  | ) | `[static]`

Creates a new builder object.

static Glib::RefPtr<Builder> Gtk::Builder::create_from_file | ( | const std::string & | filename | ) | `[static]`

Parses a file containing a GtkBuilder UI definition.

Parameters:

  | filename | the name of the file to parse.

Returns:
  A new Builder object, or a null pointer if an error occurred.

Exceptions:

  | Glib::FileError,Glib::MarkupError |

Since gtkmm 2.12:

static Glib::RefPtr<Builder> Gtk::Builder::create_from_string | ( | const Glib::ustring & | buffer | ) | `[static]`

Parses a string containing a GtkBuilder UI definition.

: the string to parse

Returns:
  A new Builder object, or a null pointer if an error occurred.

Exceptions:

  | Glib::MarkupError |

Since gtkmm 2.12:

GtkWidget* Gtk::Builder::get_cwidget | ( | const Glib::ustring & | name | ) | `[protected]`

Glib::RefPtr<Glib::Object> Gtk::Builder::get_object | ( | const Glib::ustring & | name | ) |

Gets the object named name .

Note that this function does not increment the reference count of the returned object.

Parameters:

  | name | Name of object to get.

Returns:
  The object named name or `0` if it could not be found in the object tree.

Since gtkmm 2.12:

Glib::ustring Gtk::Builder::get_translation_domain | ( |  | ) | const

Gets the translation domain of builder .

Returns:
  The translation domain. This string is owned by the builder object and must not be modified or freed.

Since gtkmm 2.12:

template <class T_Widget>

void Gtk::Builder::get_widget | ( | const Glib::ustring & | name,
|  | T_Widget *& | widget |
| ) |  |  | `[inline]`

Get a widget from the Builder file.

For instance:

     Gtk::Table* pTable = 0;
     refXml->get_widget("mytable", pTable);

This method prints a warning message to the console if the widget doesn't exist or has the wrong type, so you don't need to check that manually.

Note that you are responsible for deleting top-level widgets (windows and dialogs) instantiated by the Builder object. Other widgets are instantiated as managed so they will be deleted automatically if you add them to a container widget.

Parameters:

  | name | The name of the widget.

Return values:

  | widget | A pointer to the widget, or `0` on failure.

Gtk::Widget* Gtk::Builder::get_widget_checked | ( | const Glib::ustring & | name,
|  | GType | type |
| ) |  |  | `[protected]`

template <class T_Widget>

void Gtk::Builder::get_widget_derived | ( | const Glib::ustring & | name,
|  | T_Widget *& | widget |
| ) |  |  | `[inline]`

This provides a pointer to a widget whose details are specified in the GtkBuilder file, but which is implemented by your own derived class.

Your class must have a constructor like so:

     DerivedDialog::DerivedDialog(BaseObjectType* cobject, const Glib::RefPtr<Gtk::Builder>& refBuilder)
     : Gtk::Dialog(cobject) //Calls the base class constructor

For instance:

     Gtk::DerivedBox* pBox = 0;
     refXml->get_widget_derived("mybox", pBox);

Parameters:

  | name | The name of the widget.

Return values:

  | widget | A pointer to the widget, or `0` on failure.

const GtkBuilder* Gtk::Builder::gobj | ( |  | ) | const`[inline]`

Provides access to the underlying C GObject.

Reimplemented from Glib::ObjectBase.

GtkBuilder* Gtk::Builder::gobj | ( |  | ) | `[inline]`

Provides access to the underlying C GObject.

Reimplemented from Glib::ObjectBase.

GtkBuilder* Gtk::Builder::gobj_copy | ( |  | ) |

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

void Gtk::Builder::set_translation_domain | ( | const Glib::ustring & | domain | ) |

Sets the translation domain of builder .

See Gtk::Builder:translation-domain.

Since gtkmm 2.12:

Parameters:

  | domain | The translation domain or `0`.

## Friends And Related Function Documentation

Glib::RefPtr<Gtk::Builder> wrap | ( | GtkBuilder * | object,
|  | bool | take_copy = `false` |
| ) |  |  | `[related]`

A Glib::wrap() method for this object.

Parameters:

  | object | The C instance.
  | take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns:
  A C++ instance that wraps this C instance.

The documentation for this class was generated from the following file:

- builder.h