gtkmm 3.13.8

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Gtk::Tooltip Class Reference

Add tips to your widgets. More...

`#include <gtkmm/tooltip.h>`

Inheritance diagram for Gtk::Tooltip:
[legend]

## Public Member Functions
virtual | ~Tooltip ()
GtkTooltip* | gobj ()
| Provides access to the underlying C GObject. More...
const GtkTooltip* | gobj () const
| Provides access to the underlying C GObject. More...
GtkTooltip* | gobj_copy ()
| Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs. More...
void | set_markup (const Glib::ustring& markup)
| Sets the text of the tooltip to be markup, which is marked up with the [Pango text markup language][PangoMarkupFormat]. More...
void | unset_markup ()
| Hide the label. More...
void | set_text (const Glib::ustring& text)
| Sets the text of the tooltip to be text. More...
void | unset_text ()
| Hide the label. More...
void | set_icon (const Glib::RefPtr< Gdk::Pixbuf >& pixbuf)
| Sets the icon of the tooltip (which is in front of the text) to be pixbuf. More...
void | set_icon (const Glib::RefPtr< Gio::Icon >& gicon, IconSize size)
| Sets the icon of the tooltip (which is in front of the text) to be the icon indicated by gicon with the size indicated by size. More...
void | set_icon_from_stock (const StockID& stock_id, IconSize size)
| Sets the icon of the tooltip (which is in front of the text) to be the stock item indicated by stock_id with the size indicated by size. More...
void | set_icon_from_icon_name (const Glib::ustring& icon_name, IconSize size)
| Sets the icon of the tooltip (which is in front of the text) to be the icon indicated by icon_name with the size indicated by size. More...
void | unset_icon ()
| Hide the image. More...
void | set_custom (Widget& custom_widget)
| Replaces the widget packed into the tooltip with custom_widget. More...
void | unset_custom ()
| Remove the custom widget. More...
void | set_tip_area (const Gdk::Rectangle& rect)
| Sets the area of the widget, where the contents of this tooltip apply, to be rect (in widget coordinates). More...

## Static Public Member Functions
static GType | get_type ()
| Get the GType for this class, for use with the underlying GObject type system. More...
static void | trigger_tooltip_query (const Glib::RefPtr< Gdk::Display >& display)

## Related Functions
(Note that these are not member functions.)
Glib::RefPtr< Gtk::Tooltip > | wrap (GtkTooltip* object, bool take_copy=false)
| A Glib::wrap() method for this object. More...

## Detailed Description

Add tips to your widgets.

Basic tooltips can be realized simply by using set_tooltip_text() or set_tooltip_markup() without any explicit tooltip object.

When you need a tooltip with a little more fancy contents, like adding an image, or you want the tooltip to have different contents per Gtk::TreeView row or cell, you will have to do a little more work:

- Call Gtk::Widget:set_has_tooltip(); this will make GTK+ monitor the widget for motion and related events which are needed to determine when and where to show a tooltip.
- Connect to Gtk::Widget::signal_query_tooltip(). This signal will be emitted when a tooltip is supposed to be shown. One of the arguments passed to the signal handler is a Gtk::Tooltip object. This is the object that we are about to display as a tooltip, and can be manipulated in your callback using functions like Gtk::Tooltip::set_icon(). There are functions for setting the tooltip's markup, setting an image from a stock icon, or even putting in a custom widget.
- Return true from your query-tooltip handler. This causes the tooltip to be show. If you return false, it will not be shown.

In the probably rare case where you want to have even more control over the tooltip that is about to be shown, you can set your own Window which will be used as tooltip window. This works as follows:

- Do Gtk::Widget::set_has_tooltip() and connect to Gtk::Widget::signal_query_tooltip() as before.
- Use Gtk::Widget::set_tooltip_window() to set a Gtk::Window created by you as tooltip window.
- In the query-tooltip callback you can access your window using Gtk::Widget::get_tooltip_window() and manipulate it as you wish. The semantics of the return value are exactly as before, return true to show the window, false to not show it.

Since gtkmm 2.12:

## Constructor & Destructor Documentation

virtual Gtk::Tooltip::~Tooltip | ( |  | ) |
| virtual

## Member Function Documentation

static GType Gtk::Tooltip::get_type | ( |  | ) |
| static

Get the GType for this class, for use with the underlying GObject type system.

GtkTooltip* Gtk::Tooltip::gobj | ( |  | ) |
| inline

Provides access to the underlying C GObject.

const GtkTooltip* Gtk::Tooltip::gobj | ( |  | ) | const
| inline

Provides access to the underlying C GObject.

GtkTooltip* Gtk::Tooltip::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::Tooltip::set_custom | ( | Widget& | custom_widget | ) |

Replaces the widget packed into the tooltip with custom_widget.

custom_widget does not get destroyed when the tooltip goes away. By default a box with a Gtk::Image and Gtk::Label is embedded in the tooltip, which can be configured using set_markup() and set_icon().

Since gtkmm 2.12:

Parameters

  custom_widget | A Gtk::Widget, or `0` to unset the old custom widget.

void Gtk::Tooltip::set_icon | ( | const Glib::RefPtr< Gdk::Pixbuf >& | pixbuf | ) |

Sets the icon of the tooltip (which is in front of the text) to be pixbuf.

If pixbuf is `0`, the image will be hidden.

Since gtkmm 2.12:

Parameters

  pixbuf | A Gdk::Pixbuf, or `0`.

void Gtk::Tooltip::set_icon | ( | const Glib::RefPtr< Gio::Icon > & | gicon,
|  | IconSize | size
| ) |  |

Sets the icon of the tooltip (which is in front of the text) to be the icon indicated by gicon with the size indicated by size.

If gicon is `0`, the image will be hidden.

Since gtkmm 2.20:

Parameters

  gicon | A Icon representing the icon, or `0`.
  size | A stock icon size.

void Gtk::Tooltip::set_icon_from_icon_name | ( | const Glib::ustring & | icon_name,
|  | IconSize | size
| ) |  |

Sets the icon of the tooltip (which is in front of the text) to be the icon indicated by icon_name with the size indicated by size.

If icon_name is `0`, the image will be hidden.

Since gtkmm 2.14:

Parameters

  icon_name | An icon name, or `0`.
  size | A stock icon size.

void Gtk::Tooltip::set_icon_from_stock | ( | const StockID& | stock_id,
|  | IconSize | size
| ) |  |

Sets the icon of the tooltip (which is in front of the text) to be the stock item indicated by stock_id with the size indicated by size.

If stock_id is `0`, the image will be hidden.

Since gtkmm 2.12:

Deprecated: 3.10: Use set_icon_from_icon_name() instead.

Deprecated:
  Use set_icon_from_icon_name() instead.

Parameters

  stock_id | A stock id, or `0`.
  size | A stock icon size.

void Gtk::Tooltip::set_markup | ( | const Glib::ustring & | markup | ) |

Sets the text of the tooltip to be markup, which is marked up with the [Pango text markup language][PangoMarkupFormat].

If markup is `0`, the label will be hidden.

Since gtkmm 2.12:

Parameters

  markup | A markup string (see [Pango markup format][PangoMarkupFormat]) or `0`.

void Gtk::Tooltip::set_text | ( | const Glib::ustring & | text | ) |

Sets the text of the tooltip to be text.

If text is `0`, the label will be hidden. See also set_markup().

Since gtkmm 2.12:

Parameters

  text | A text string or `0`.

void Gtk::Tooltip::set_tip_area | ( | const Gdk::Rectangle& | rect | ) |

Sets the area of the widget, where the contents of this tooltip apply, to be rect (in widget coordinates).

This is especially useful for properly setting tooltips on Gtk::TreeView rows and cells, Gtk::IconViews, etc.

For setting tooltips on Gtk::TreeView, please refer to the convenience functions for this: Gtk::TreeView::set_tooltip_row() and Gtk::TreeView::set_tooltip_cell().

Since gtkmm 2.12:

Parameters

  rect | A Gdk::Rectangle.

static void Gtk::Tooltip::trigger_tooltip_query | ( | const Glib::RefPtr< Gdk::Display >& | display | ) |
| static

void Gtk::Tooltip::unset_custom | ( |  | ) |

Remove the custom widget.

Since gtkmm 3.2:

void Gtk::Tooltip::unset_icon | ( |  | ) |

Hide the image.

Since gtkmm 3.2:

void Gtk::Tooltip::unset_markup | ( |  | ) |

Hide the label.

Since gtkmm 3.2:

void Gtk::Tooltip::unset_text | ( |  | ) |

Hide the label.

Since gtkmm 3.2:

## Friends And Related Function Documentation

Glib::RefPtr< Gtk::Tooltip > wrap | ( | GtkTooltip * | 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.