sf::WindowBase Class Reference

Window that serves as a base for other windows. More...

#include <SFML/Window/WindowBase.hpp>

Inheritance diagram for sf::WindowBase:

Public Member Functions
	WindowBase ()
	Default constructor.
	WindowBase (VideoMode mode, const String &title, Uint32 style=Style::Default)
	Construct a new window.
	WindowBase (WindowHandle handle)
	Construct the window from an existing control.
virtual	~WindowBase ()
	Destructor.
virtual void	create (VideoMode mode, const String &title, Uint32 style=Style::Default)
	Create (or recreate) the window.
virtual void	create (WindowHandle handle)
	Create (or recreate) the window from an existing control.
virtual void	close ()
	Close the window and destroy all the attached resources.
bool	isOpen () const
	Tell whether or not the window is open.
bool	pollEvent (Event &event)
	Pop the event on top of the event queue, if any, and return it.
bool	waitEvent (Event &event)
	Wait for an event and return it.
Vector2i	getPosition () const
	Get the position of the window.
void	setPosition (const Vector2i &position)
	Change the position of the window on screen.
Vector2u	getSize () const
	Get the size of the rendering region of the window.
void	setSize (const Vector2u &size)
	Change the size of the rendering region of the window.
void	setTitle (const String &title)
	Change the title of the window.
void	setIcon (unsigned int width, unsigned int height, const Uint8 *pixels)
	Change the window's icon.
void	setVisible (bool visible)
	Show or hide the window.
void	setMouseCursorVisible (bool visible)
	Show or hide the mouse cursor.
void	setMouseCursorGrabbed (bool grabbed)
	Grab or release the mouse cursor.
void	setMouseCursor (const Cursor &cursor)
	Set the displayed cursor to a native system cursor.
void	setKeyRepeatEnabled (bool enabled)
	Enable or disable automatic key-repeat.
void	setJoystickThreshold (float threshold)
	Change the joystick threshold.
void	requestFocus ()
	Request the current window to be made the active foreground window.
bool	hasFocus () const
	Check whether the window has the input focus.
WindowHandle	getSystemHandle () const
	Get the OS-specific handle of the window.
bool	createVulkanSurface (const VkInstance &instance, VkSurfaceKHR &surface, const VkAllocationCallbacks *allocator=0)
	Create a Vulkan rendering surface.

Protected Member Functions
virtual void	onCreate ()
	Function called after the window has been created.
virtual void	onResize ()
	Function called after the window has been resized.

Friends
class	Window

Detailed Description

Window that serves as a base for other windows.

sf::WindowBase serves as the base class for all Windows.

A sf::WindowBase can create its own new window, or be embedded into an already existing control using the create(handle) function.

The sf::WindowBase class provides a simple interface for manipulating the window: move, resize, show/hide, control mouse cursor, etc. It also provides event handling through its pollEvent() and waitEvent() functions.

Usage example:

// Declare and create a new window
sf::WindowBase window(sf::VideoMode(800, 600), "SFML window");
 
// The main loop - ends as soon as the window is closed
while (window.isOpen())
{
   // Event processing
   sf::Event event;
   while (window.pollEvent(event))
   {
       // Request for closing the window
       if (event.type == sf::Event::Closed)
           window.close();
   }
 
   // Do things with the window here...
}

Definition at line 56 of file WindowBase.hpp.

Constructor & Destructor Documentation

WindowBase() [1/3]

sf::WindowBase::WindowBase

(

)

Default constructor.

This constructor doesn't actually create the window, use the other constructors or call create() to do so.

WindowBase() [2/3]

sf::WindowBase::WindowBase	(	VideoMode	mode,
		const String &	title,
		Uint32	style = Style::Default )

Construct a new window.

This constructor creates the window with the size and pixel depth defined in mode. An optional style can be passed to customize the look and behavior of the window (borders, title bar, resizable, closable, ...). If style contains Style::Fullscreen, then mode must be a valid video mode.

Parameters

mode	Video mode to use (defines the width, height and depth of the rendering area of the window)
title	Title of the window
style	Window style, a bitwise OR combination of sf::Style enumerators

WindowBase() [3/3]

sf::WindowBase::WindowBase ( WindowHandle handle )

explicit

Construct the window from an existing control.

Parameters

handle

Platform-specific handle of the control

~WindowBase()

virtual sf::WindowBase::~WindowBase ( )

virtual

Destructor.

Closes the window and frees all the resources attached to it.

Member Function Documentation

close()

virtual void sf::WindowBase::close ( )

virtual

Close the window and destroy all the attached resources.

After calling this function, the sf::Window instance remains valid and you can call create() to recreate the window. All other functions such as pollEvent() or display() will still work (i.e. you don't have to test isOpen() every time), and will have no effect on closed windows.

Reimplemented in sf::Window.

create() [1/2]

virtual void sf::WindowBase::create ( VideoMode mode, const String & title, Uint32 style = Style::Default )

virtual

Create (or recreate) the window.

If the window was already created, it closes it first. If style contains Style::Fullscreen, then mode must be a valid video mode.

Parameters

mode	Video mode to use (defines the width, height and depth of the rendering area of the window)
title	Title of the window
style	Window style, a bitwise OR combination of sf::Style enumerators

Reimplemented in sf::Window.

create() [2/2]

virtual void sf::WindowBase::create ( WindowHandle handle )

virtual

Create (or recreate) the window from an existing control.

Parameters

handle

Platform-specific handle of the control

Reimplemented in sf::Window.

createVulkanSurface()

bool sf::WindowBase::createVulkanSurface	(	const VkInstance &	instance,
		VkSurfaceKHR &	surface,
		const VkAllocationCallbacks *	allocator = 0 )

Create a Vulkan rendering surface.

Parameters

instance	Vulkan instance
surface	Created surface
allocator	Allocator to use

Returns

True if surface creation was successful, false otherwise

getPosition()

Vector2i sf::WindowBase::getPosition

(

)

const

Get the position of the window.

Returns

Position of the window, in pixels

See also

setPosition

getSize()

Vector2u sf::WindowBase::getSize

(

)

const

Get the size of the rendering region of the window.

The size doesn't include the titlebar and borders of the window.

Returns

Size in pixels

See also

setSize

getSystemHandle()

WindowHandle sf::WindowBase::getSystemHandle

(

)

const

Get the OS-specific handle of the window.

The type of the returned handle is sf::WindowHandle, which is a typedef to the handle type defined by the OS. You shouldn't need to use this function, unless you have very specific stuff to implement that SFML doesn't support, or implement a temporary workaround until a bug is fixed.

Returns

System handle of the window

hasFocus()

bool sf::WindowBase::hasFocus

(

)

const

Check whether the window has the input focus.

At any given time, only one window may have the input focus to receive input events such as keystrokes or most mouse events.

Returns

True if window has focus, false otherwise

See also

requestFocus

isOpen()

bool sf::WindowBase::isOpen

(

)

const

Tell whether or not the window is open.

This function returns whether or not the window exists. Note that a hidden window (setVisible(false)) is open (therefore this function would return true).

Returns

True if the window is open, false if it has been closed

onCreate()

virtual void sf::WindowBase::onCreate ( )

protectedvirtual

Function called after the window has been created.

This function is called so that derived classes can perform their own specific initialization as soon as the window is created.

Reimplemented in sf::RenderWindow.

onResize()

virtual void sf::WindowBase::onResize ( )

protectedvirtual

Function called after the window has been resized.

This function is called so that derived classes can perform custom actions when the size of the window changes.

Reimplemented in sf::RenderWindow.

pollEvent()

bool sf::WindowBase::pollEvent

(

Event &

event

)

Pop the event on top of the event queue, if any, and return it.

This function is not blocking: if there's no pending event then it will return false and leave event unmodified. Note that more than one event may be present in the event queue, thus you should always call this function in a loop to make sure that you process every pending event.

sf::Event event;
while (window.pollEvent(event))
{
   // process event...
}

Parameters

event

Event to be returned

Returns

True if an event was returned, or false if the event queue was empty

See also

waitEvent

requestFocus()

void sf::WindowBase::requestFocus

(

)

Request the current window to be made the active foreground window.

At any given time, only one window may have the input focus to receive input events such as keystrokes or mouse events. If a window requests focus, it only hints to the operating system, that it would like to be focused. The operating system is free to deny the request. This is not to be confused with setActive().

See also

hasFocus

setIcon()

void sf::WindowBase::setIcon	(	unsigned int	width,
		unsigned int	height,
		const Uint8 *	pixels )

Change the window's icon.

pixels must be an array of width x height pixels in 32-bits RGBA format.

The OS default icon is used by default.

Parameters

width	Icon's width, in pixels
height	Icon's height, in pixels
pixels	Pointer to the array of pixels in memory. The pixels are copied, so you need not keep the source alive after calling this function.

See also

setTitle

setJoystickThreshold()

void sf::WindowBase::setJoystickThreshold

(

float

threshold

)

Change the joystick threshold.

The joystick threshold is the value below which no JoystickMoved event will be generated.

The threshold value is 0.1 by default.

Parameters

threshold

New threshold, in the range [0, 100]

setKeyRepeatEnabled()

void sf::WindowBase::setKeyRepeatEnabled

(

bool

enabled

)

Enable or disable automatic key-repeat.

If key repeat is enabled, you will receive repeated KeyPressed events while keeping a key pressed. If it is disabled, you will only get a single event when the key is pressed.

Key repeat is enabled by default.

Parameters

enabled

True to enable, false to disable

setMouseCursor()

void sf::WindowBase::setMouseCursor

(

const Cursor &

cursor

)

Set the displayed cursor to a native system cursor.

Upon window creation, the arrow cursor is used by default.

Warning

The cursor must not be destroyed while in use by the window.

Features related to Cursor are not supported on iOS and Android.

Parameters

cursor

Native system cursor type to display

See also

sf::Cursor::loadFromSystem

sf::Cursor::loadFromPixels

setMouseCursorGrabbed()

void sf::WindowBase::setMouseCursorGrabbed

(

bool

grabbed

)

Grab or release the mouse cursor.

If set, grabs the mouse cursor inside this window's client area so it may no longer be moved outside its bounds. Note that grabbing is only active while the window has focus.

Parameters

grabbed

True to enable, false to disable

setMouseCursorVisible()

void sf::WindowBase::setMouseCursorVisible

(

bool

visible

)

Show or hide the mouse cursor.

The mouse cursor is visible by default.

Parameters

visible

True to show the mouse cursor, false to hide it

setPosition()

void sf::WindowBase::setPosition

(

const Vector2i &

position

)

Change the position of the window on screen.

This function only works for top-level windows (i.e. it will be ignored for windows created from the handle of a child window/control).

Parameters

position

New position, in pixels

See also

getPosition

setSize()

void sf::WindowBase::setSize

(

const Vector2u &

size

)

Change the size of the rendering region of the window.

Parameters

size	New size, in pixels

See also

getSize

setTitle()

void sf::WindowBase::setTitle

(

const String &

title

)

Change the title of the window.

Parameters

title

New title

See also

setIcon

setVisible()

void sf::WindowBase::setVisible

(

bool

visible

)

Show or hide the window.

The window is shown by default.

Parameters

visible

True to show the window, false to hide it

waitEvent()

bool sf::WindowBase::waitEvent

(

Event &

event

)

Wait for an event and return it.

This function is blocking: if there's no pending event then it will wait until an event is received. After this function returns (and no error occurred), the event object is always valid and filled properly. This function is typically used when you have a thread that is dedicated to events handling: you want to make this thread sleep as long as no new event is received.

sf::Event event;
if (window.waitEvent(event))
{
   // process event...
}

Parameters

event

Event to be returned

Returns

False if any error occurred

See also

pollEvent

Friends And Related Symbol Documentation

Window

friend class Window

friend

Definition at line 432 of file WindowBase.hpp.

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

• WindowBase.hpp