GI.GdkX11.Objects.X11Screen

No description available in the introspection data.

Exported types

newtype X11Screen

Memory-managed wrapper type.

Constructors

X11Screen (ManagedPtr X11Screen)

Instances

Eq X11Screen

Defined in GI.GdkX11.Objects.X11Screen

Methods

(==) :: X11Screen -> X11Screen -> Bool

(/=) :: X11Screen -> X11Screen -> Bool

GObject X11Screen

Defined in GI.GdkX11.Objects.X11Screen

Methods

gobjectType :: IO GType

IsGValue X11Screen

Convert X11Screen to and from GValue with toGValue and fromGValue.

Defined in GI.GdkX11.Objects.X11Screen

Methods

toGValue :: X11Screen -> IO GValue

fromGValue :: GValue -> IO X11Screen

HasParentTypes X11Screen

Defined in GI.GdkX11.Objects.X11Screen

type ParentTypes X11Screen

Defined in GI.GdkX11.Objects.X11Screen

type ParentTypes X11Screen = '[Screen, Object]

class (GObject o, IsDescendantOf X11Screen o) => IsX11Screen o

Type class for types which can be safely cast to X11Screen, for instance with toX11Screen.

Instances

(GObject o, IsDescendantOf X11Screen o) => IsX11Screen o

Defined in GI.GdkX11.Objects.X11Screen

toX11Screen :: (MonadIO m, IsX11Screen o) => o -> m X11Screen

Cast to X11Screen, for types for which this is known to be safe. For general casts, use castTo.

noX11Screen :: Maybe X11Screen

A convenience alias for Nothing :: Maybe X11Screen.

Methods

Overloaded methods

getCurrentDesktop

x11ScreenGetCurrentDesktop

Arguments

:: (HasCallStack, MonadIO m, IsX11Screen a)

=> a

screen: a Screen

-> m Word32

Returns: the current workspace, or 0 if workspaces are not supported

Returns the current workspace for screen when running under a window manager that supports multiple workspaces, as described in the Extended Window Manager Hints specification.

Since: 3.10

getMonitorOutput

x11ScreenGetMonitorOutput

Arguments

:: (HasCallStack, MonadIO m, IsX11Screen a)

=> a

screen: a Screen

-> Int32

monitorNum: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)

-> m CULong

Returns: the XID of the monitor

Gets the XID of the specified output/monitor. If the X server does not support version 1.2 of the RANDR extension, 0 is returned.

Since: 2.14

getNumberOfDesktops

x11ScreenGetNumberOfDesktops

Arguments

:: (HasCallStack, MonadIO m, IsX11Screen a)

=> a

screen: a Screen

-> m Word32

Returns: the number of workspaces, or 0 if workspaces are not supported

Returns the number of workspaces for screen when running under a window manager that supports multiple workspaces, as described in the Extended Window Manager Hints specification.

Since: 3.10

getScreenNumber

x11ScreenGetScreenNumber

Arguments

:: (HasCallStack, MonadIO m, IsX11Screen a)

=> a

screen: a Screen

-> m Int32

Returns: the position of screen among the screens of its display

Returns the index of a Screen.

Since: 2.2

getWindowManagerName

x11ScreenGetWindowManagerName

Arguments

:: (HasCallStack, MonadIO m, IsX11Screen a)

=> a

screen: a Screen

-> m Text

Returns: the name of the window manager screen screen, or "unknown" if the window manager is unknown. The string is owned by GDK and should not be freed.

Returns the name of the window manager for screen.

Since: 2.2

getXscreen

x11ScreenGetXscreen

Arguments

:: (HasCallStack, MonadIO m, IsX11Screen a)

=> a

screen: a Screen

-> m Screen

Returns: an Xlib Screen*

Returns the screen of a Screen.

Since: 2.2

lookupVisual

x11ScreenLookupVisual

Arguments

:: (HasCallStack, MonadIO m, IsX11Screen a)

=> a

screen: a Screen.

-> CULong

xvisualid: an X Visual ID.

-> m X11Visual

Returns: the Visual (owned by the screen object), or Nothing if the visual ID wasn’t found.

Looks up the Visual for a particular screen and X Visual ID.

Since: 2.2

supportsNetWmHint

x11ScreenSupportsNetWmHint

Arguments

:: (HasCallStack, MonadIO m, IsX11Screen a)

=> a

screen: the relevant Screen.

-> Atom

property: a property atom.

-> m Bool

Returns: True if the window manager supports property

This function is specific to the X11 backend of GDK, and indicates whether the window manager supports a certain hint from the Extended Window Manager Hints specification.

When using this function, keep in mind that the window manager can change over time; so you shouldn’t use this function in a way that impacts persistent application state. A common bug is that your application can start up before the window manager does when the user logs in, and before the window manager starts x11ScreenSupportsNetWmHint will return False for every property. You can monitor the window_manager_changed signal on Screen to detect a window manager change.

Since: 2.2

Signals

windowManagerChanged

type C_X11ScreenWindowManagerChangedCallback = Ptr () -> Ptr () -> IO ()

Type for the callback on the (unwrapped) C side.

type X11ScreenWindowManagerChangedCallback = IO ()

No description available in the introspection data.

afterX11ScreenWindowManagerChanged :: (IsX11Screen a, MonadIO m) => a -> X11ScreenWindowManagerChangedCallback -> m SignalHandlerId

Connect a signal handler for the windowManagerChanged signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after x11Screen #windowManagerChanged callback

genClosure_X11ScreenWindowManagerChanged :: MonadIO m => X11ScreenWindowManagerChangedCallback -> m (GClosure C_X11ScreenWindowManagerChangedCallback)

Wrap the callback into a GClosure.

mk_X11ScreenWindowManagerChangedCallback :: C_X11ScreenWindowManagerChangedCallback -> IO (FunPtr C_X11ScreenWindowManagerChangedCallback)

Generate a function pointer callable from C code, from a C_X11ScreenWindowManagerChangedCallback.

noX11ScreenWindowManagerChangedCallback :: Maybe X11ScreenWindowManagerChangedCallback

A convenience synonym for Nothing :: Maybe X11ScreenWindowManagerChangedCallback.

onX11ScreenWindowManagerChanged :: (IsX11Screen a, MonadIO m) => a -> X11ScreenWindowManagerChangedCallback -> m SignalHandlerId

Connect a signal handler for the windowManagerChanged signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on x11Screen #windowManagerChanged callback

wrap_X11ScreenWindowManagerChangedCallback :: X11ScreenWindowManagerChangedCallback -> C_X11ScreenWindowManagerChangedCallback

Wrap a X11ScreenWindowManagerChangedCallback into a C_X11ScreenWindowManagerChangedCallback.