#include <wx/display.h>

Detailed Description

Determines the sizes and locations of displays connected to the system.

Library: wxCore

Category: Application and System configuration

Public Member Functions
	wxDisplay ()
	Default constructor creating wxDisplay object representing the primary display. More...

	wxDisplay (unsigned int index)
	Constructor, setting up a wxDisplay instance with the specified display. More...

	wxDisplay (const wxWindow *window)
	Constructor creating the display object associated with the given window. More...

	~wxDisplay ()
	Destructor. More...

bool	ChangeMode (const wxVideoMode &mode=wxDefaultVideoMode)
	Changes the video mode of this display to the mode specified in the mode parameter. More...

wxRect	GetClientArea () const
	Returns the client area of the display. More...

wxVideoMode	GetCurrentMode () const
	Returns the current video mode that this display is in. More...

wxRect	GetGeometry () const
	Returns the bounding rectangle of the display whose index was passed to the constructor. More...

wxArrayVideoModes	GetModes (const wxVideoMode &mode=wxDefaultVideoMode) const
	Fills and returns an array with all the video modes that are supported by this display, or video modes that are supported by this display and match the mode parameter (if mode is not wxDefaultVideoMode). More...

wxString	GetName () const
	Returns the display's name. More...

int	GetDepth () const
	Returns display depth, i.e. More...

wxSize	GetPPI () const
	Returns display resolution in pixels per inch. More...

double	GetScaleFactor () const
	Returns scaling factor used by this display. More...

bool	IsPrimary () const
	Returns true if the display is the primary display. More...

Static Public Member Functions
static unsigned int	GetCount ()
	Returns the number of connected displays. More...

static int	GetFromPoint (const wxPoint &pt)
	Returns the index of the display on which the given point lies, or `wxNOT_FOUND` if the point is not on any connected display. More...

static int	GetFromWindow (const wxWindow *win)
	Returns the index of the display on which the given window lies. More...

static int	GetStdPPIValue ()
	Returns default display resolution for the current platform in pixels per inch. More...

static wxSize	GetStdPPI ()
	Returns default display resolution for the current platform as wxSize. More...

Constructor & Destructor Documentation

◆ wxDisplay() [1/3]

wxDisplay::wxDisplay ( )

Default constructor creating wxDisplay object representing the primary display.

◆ wxDisplay() [2/3]

wxDisplay::wxDisplay ( unsigned int index )

explicit

Constructor, setting up a wxDisplay instance with the specified display.

Parameters

index The index of the display to use. This must be non-negative and lower than the value returned by GetCount().

◆ wxDisplay() [3/3]

wxDisplay::wxDisplay ( const wxWindow * window )

explicit

Constructor creating the display object associated with the given window.

This is the most convenient way of finding the display on which the given window is shown while falling back to the default display if it is not shown at all or positioned outside of any display.

Parameters

window A valid, i.e. non-null, window.

See also: GetFromWindow()

Since: 3.1.2

◆ ~wxDisplay()

wxDisplay::~wxDisplay ( )

Destructor.

Member Function Documentation

◆ ChangeMode()

bool wxDisplay::ChangeMode ( const wxVideoMode & mode = wxDefaultVideoMode )

Changes the video mode of this display to the mode specified in the mode parameter.

If wxDefaultVideoMode is passed in as the mode parameter, the defined behaviour is that wxDisplay will reset the video mode to the default mode used by the display. On Windows, the behaviour is normal. However, there are differences on other platforms. On Unix variations using X11 extensions it should behave as defined, but some irregularities may occur.

◆ GetClientArea()

wxRect wxDisplay::GetClientArea ( ) const

Returns the client area of the display.

The client area is the part of the display available for the normal (non full screen) windows, usually it is the same as GetGeometry() but it could be less if there is a taskbar (or equivalent) on this display.

◆ GetCount()

static unsigned int wxDisplay::GetCount ( )

static

Returns the number of connected displays.

◆ GetCurrentMode()

wxVideoMode wxDisplay::GetCurrentMode ( ) const

Returns the current video mode that this display is in.

◆ GetDepth()

int wxDisplay::GetDepth ( ) const

Returns display depth, i.e.

number of bits per pixel (0 if unknown)

Since: 3.1.2

◆ GetFromPoint()

static int wxDisplay::GetFromPoint ( const wxPoint & pt )

static

Returns the index of the display on which the given point lies, or wxNOT_FOUND if the point is not on any connected display.

Parameters

pt	The point to locate.

◆ GetFromWindow()

static int wxDisplay::GetFromWindow ( const wxWindow * win )

static

Returns the index of the display on which the given window lies.

If the window is on more than one display it gets the display that overlaps the window the most.

Returns wxNOT_FOUND if the window is not on any connected display.

Parameters

win	The window to locate.

◆ GetGeometry()

wxRect wxDisplay::GetGeometry ( ) const

Returns the bounding rectangle of the display whose index was passed to the constructor.

See also: GetClientArea(), wxDisplaySize()

◆ GetModes()

wxArrayVideoModes wxDisplay::GetModes ( const wxVideoMode & mode = wxDefaultVideoMode ) const

Fills and returns an array with all the video modes that are supported by this display, or video modes that are supported by this display and match the mode parameter (if mode is not wxDefaultVideoMode).

◆ GetName()

wxString wxDisplay::GetName ( ) const

Returns the display's name.

The returned value is currently an empty string under all platforms except MSW.

◆ GetPPI()

wxSize wxDisplay::GetPPI ( ) const

Returns display resolution in pixels per inch.

Horizontal and vertical resolution are returned in x and y components of the wxSize object respectively.

If the resolution information is not available, returns

wxSize(0,

0)

wxSize

A wxSize is a useful data structure for graphics operations.

Definition: gdicmn.h:940

.

Since: 3.1.2

◆ GetScaleFactor()

double wxDisplay::GetScaleFactor ( ) const

Returns scaling factor used by this display.

The scaling factor is the ratio between GetPPI() and GetStdPPI() (it is implicitly assumed that this ratio is the same for both horizontal and vertical components).

See also: wxWindow::GetContentScaleFactor(), wxWindow::GetDPIScaleFactor()

Since: 3.1.5

◆ GetStdPPI()

static wxSize wxDisplay::GetStdPPI ( )

static

Returns default display resolution for the current platform as wxSize.

This function is equivalent to constructing wxSize object with both components set to GetStdPPIValue().

Since: 3.1.5

◆ GetStdPPIValue()

static int wxDisplay::GetStdPPIValue ( )

static

Returns default display resolution for the current platform in pixels per inch.

This function mostly used internally, use GetPPI() to get the actual display resolution.

Currently the standard PPI is the same in both horizontal and vertical directions on all platforms and its value is 96 everywhere except under Apple devices (those running macOS, iOS, watchOS etc), where it is 72.

See also: GetStdPPI()

Since: 3.1.5

◆ IsPrimary()

bool wxDisplay::IsPrimary ( ) const

Returns true if the display is the primary display.

The primary display is the one whose index is 0.

Detailed Description

Public Member Functions

Static Public Member Functions

Constructor & Destructor Documentation

◆ wxDisplay() [1/3]

◆ wxDisplay() [2/3]

◆ wxDisplay() [3/3]

◆ ~wxDisplay()

Member Function Documentation

◆ ChangeMode()

◆ GetClientArea()

◆ GetCount()

◆ GetCurrentMode()

◆ GetDepth()

◆ GetFromPoint()

◆ GetFromWindow()

◆ GetGeometry()

◆ GetModes()

◆ GetName()

◆ GetPPI()

◆ GetScaleFactor()

◆ GetStdPPI()

◆ GetStdPPIValue()

◆ IsPrimary()