API for displaying a graphical user interface. More...

Classes
class	BAbstractLayout
	BLayout subclass providing convenience methods for derived implementations. More...
class	BAlert
	The BAlert class defines a modal alert dialog which displays a short message and provides a set of labeled buttons that allow the user to respond. More...
class	BLayoutBuilder::Base< ParentBuilder >
	Base for all other layout builders in the BLayoutBuilder namespace. More...
class	BBitmap
	Access and manipulate digital images commonly known as bitmaps. More...
class	BBox
	A rectangular view with a border and an optional label to group related subviews visually. More...
class	BButton
	A BButton is a labeled on-screen button. More...
class	BCheckBox
	BCheckBox is a user interface element used to make a binary decision. More...
class	BColorControl
	BColorControl displays an on-screen color picker. More...
class	BControl
	BControl is the base class for user-event handling objects. More...
class	BDragger
	A view that allows the user drag and drop a target view. More...
class	BFont
	Represents a typeface including it's family, style and size. More...
class	BGridLayout
	The BGridLayout class a BLayout subclass that arranges the items it holds in a grid. More...
class	BGroupLayout
	The BGroupLayout class is a simple BLayout subclass that arranges the items it holds within a vertical or horizontal box. More...
class	BIconUtils
	The BIconUtils class provide utility methods for managing and drawing vector icons. More...
class	BLayout
	The BLayout class provides an interface, and some basic implementation to manage the positioning and sizing of BLayoutItem s. More...
class	BLayoutItem
	Abstract class representing things that are positionable and resizable by objects of the BLayout class. More...
class	BListItem
	A list item, a member of a BListView or BOutlineListView. More...
class	BListView
	Displays a list of items that the user can select and invoke. More...
class	BScreen
	The BScreen class provides methods to retrieve and change display settings. More...
class	BTextView
	Displays and manipulates styled text. More...
class	BTwoDimensionalLayout
	Abstract BLayout subclass arranging items within rows and columns. More...
class	BView
	View base class. More...
struct	edge_info
	The distance that a character outline is inset from its escapement boundaries. More...
struct	escapement_delta
	The amount of horizontal space surrounding a character. More...
struct	font_cache_info
	Font cache parameters. More...
struct	font_height
	The amount of vertical space surrounding a character. More...
class	BLayoutBuilder::Group< ParentBuilder >
	BLayoutBuilder::Base subclass for building BGroupLayouts. More...
struct	text_run
	text run struct More...
struct	text_run_array
	text run array struct More...
struct	tuned_font_info
	Tuning information of fonts used to make it look better when displayed on-screen. More...
class	unicode_block
	Describes the blocks of Unicode characters supported by a font. More...
Modules
	Layout classes in the Interface Kit
Files
file	Alert.h
	BAlert class definition and support enums.
file	Bitmap.h
	Defines the BBitmap class and global operators and functions for handling bitmaps.
file	CheckBox.h
	Defines the BCheckBox class.
file	ColorControl.h
	BColorControl class definition and support enums.
file	Control.h
	BControl class definition and support enums.
file	Font.h
	BFont class definition, unicode_block class definition, and font-related struct and enum definitions.
file	GridLayout.h
	Provides the BGridLayout class.
file	GroupLayout.h
	Describes the BGroupLayout class.
file	GroupLayoutBuilder.h
	Provides the BLayoutBuilder::Group<> class.
file	IconUtils.h
	Vector icon handling utility class.
file	InterfaceDefs.h
	Defines standard interface definitions for controls.
file	Layout.h
	Defines the BLayout class.
file	LayoutBuilder.h
	Defines the BLayoutBuilder templates.
file	LayoutItem.h
	Describes the BLayoutItem class.
file	ListItem.h
	ListItem class definition.
file	ListView.h
	ListView class definition.
file	Screen.h
	Defines the BScreen class and support structures.
file	TextView.h
	Provides the BTextView class and associated structs.
file	TwoDimensionalLayout.h
	Defines the BTwoDimensionalLayout class.
file	View.h
	BView class definition and support data structures.
Enumerations
enum	alert_type { B_EMPTY_ALERT = 0, B_INFO_ALERT, B_IDEA_ALERT, B_WARNING_ALERT, B_STOP_ALERT }
enum	border_style { B_PLAIN_BORDER, B_FANCY_BORDER, B_NO_BORDER }
enum	button_spacing { B_EVEN_SPACING = 0, B_OFFSET_SPACING }
enum	color_control_layout { B_CELLS_4x64 = 4, B_CELLS_8x32 = 8, B_CELLS_16x16 = 16, B_CELLS_32x8 = 32, B_CELLS_64x4 = 64 }
enum	font_direction { B_FONT_LEFT_TO_RIGHT = 0, B_FONT_RIGHT_TO_LEFT = 1 }
enum	font_file_format { B_TRUETYPE_WINDOWS = 0, B_POSTSCRIPT_TYPE1_WINDOWS = 1 }
enum	undo_state

Detailed Description

API for displaying a graphical user interface.

The Interface Kit holds all the classes you'll need to develop a GUI. Building on the messaging facilities provided by the Application Kit, the Interface Kit can be used to create a responsive and attractive graphical user interface.

The most important class in the Interface Kit is the BView class, which handles drawing and user interaction. Pointer and keyboard events are processed in this class.

Another important class is the BWindow class, which holds BViews and makes them visible to the user. The BWindow class also handles BView focusing and BMessage dispatching, among other things.

A new addition Haiku has added over the BeOS API is the Layout API, which is based around the BLayoutItem and BLayout classes. These classes will take care of making sure all your GUI widgets end up where you want them, with enough space to be useful. You can start learning the Layout API by reading the introduction .

Enumeration Type Documentation

enum alert_type

Determines which icon (if any) is displayed in the alert dialog. Choose one option. If the constructor doesn't include an alert_type argument than B_EMPTY_ALERT is used.

Enumerator:

B_EMPTY_ALERT	No icon
B_INFO_ALERT	Info icon
B_IDEA_ALERT	Idea icon
B_WARNING_ALERT	Warning icon
B_STOP_ALERT	Stop icon

enum border_style

Collection of flags that determine the border style drawn around a BBox.

Enumerator:

B_PLAIN_BORDER	The right and bottom sides of the box are darker than the top and left sides to produce a shadow effect and make the box look like it is raised slightly above the surrounding surface.
B_FANCY_BORDER	The border is a bevelled to give it a 3D effect. The border is uniform in appearance on all four sides. This is the default appearance.
B_NO_BORDER	No border.

enum button_spacing

Determines how the buttons on the alert dialog are spaced relative to each other. Choose one option. If the constructor doesn't include a button_spacing argument than B_EVEN_SPACING is used.

Enumerator:

B_EVEN_SPACING	If the alert dialog has more than one button than the buttons are spaced evenly across the bottom of the alert dialog.
B_OFFSET_SPACING	If the alert dialog has more than one button than the leftmost button is offset to the left-hand side of the dialog while the rest of the buttons are grouped on the right. This is useful to separate off a leftmost "Cancel" or "Delete" button.

enum color_control_layout

Enumeration of the color control layout options.

Enumerator:

B_CELLS_4x64	Cells are arranged in 4 columns, 64 rows.
B_CELLS_8x32	Cells are arranged in 8 columns, 32 rows.
B_CELLS_16x16	Cells are arranged in 16 columns, 16 rows.
B_CELLS_32x8	Cells are arranged in 32 columns, 8 rows.
B_CELLS_64x4	Cells are arranged in 64 columns, 4 rows.

enum font_direction

Determines the direction of the text rendered by the font, left-to-right or right-to-left.

Enumerator:

B_FONT_LEFT_TO_RIGHT	Left to right.
B_FONT_RIGHT_TO_LEFT	Right to left.

enum font_file_format

Font file format, TrueType™ or PostScript™ Type1.

See also:: BFont::FileFormat()

Enumerator:

B_TRUETYPE_WINDOWS	TrueType™ font file format.
B_POSTSCRIPT_TYPE1_WINDOWS	PostScript™ Type1 font file format.

enum undo_state

Undo state flags.

Classes

Modules

Files

Enumerations

Detailed Description

Enumeration Type Documentation