GI.Gtk.Objects.Button

The Button widget is generally used to trigger a callback function that is called when the button is pressed. The various signals and how to use them are outlined below.

The Button widget can hold any valid child widget. That is, it can hold almost any other standard Widget. The most commonly used child is the Label.

CSS nodes

GtkButton has a single CSS node with name button. The node will get the style classes .image-button or .text-button, if the content is just an image or label, respectively. It may also receive the .flat style class.

Other style classes that are commonly used with GtkButton include .suggested-action and .destructive-action. In special cases, buttons can be made round by adding the .circular style class.

Button-like widgets like ToggleButton, MenuButton, VolumeButton, LockButton, ColorButton, FontButton or FileChooserButton use style classes such as .toggle, .popup, .scale, .lock, .color, .font, .file to differentiate themselves from a plain GtkButton.

Exported types

newtype Button

Memory-managed wrapper type.

Constructors

Button (ManagedPtr Button)

Instances

Eq Button

Defined in GI.Gtk.Objects.Button

Methods

(==) :: Button -> Button -> Bool

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

IsGValue Button

Convert Button to and from GValue with toGValue and fromGValue.

Defined in GI.Gtk.Objects.Button

Methods

toGValue :: Button -> IO GValue

fromGValue :: GValue -> IO Button

GObject Button

Defined in GI.Gtk.Objects.Button

Methods

gobjectType :: IO GType

HasParentTypes Button

Defined in GI.Gtk.Objects.Button

type ParentTypes Button

Defined in GI.Gtk.Objects.Button

type ParentTypes Button = '[Bin, Container, Widget, Object, ImplementorIface, Actionable, Activatable, Buildable]

class (GObject o, IsDescendantOf Button o) => IsButton o

Type class for types which can be safely cast to Button, for instance with toButton.

Instances

(GObject o, IsDescendantOf Button o) => IsButton o

Defined in GI.Gtk.Objects.Button

toButton :: (MonadIO m, IsButton o) => o -> m Button

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

noButton :: Maybe Button

A convenience alias for Nothing :: Maybe Button.

Methods

Overloaded methods

clicked

buttonClicked

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: The Button you want to send the signal to.

-> m ()

Emits a clicked signal to the given Button.

enter

buttonEnter

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: The Button you want to send the signal to.

-> m ()

Deprecated: (Since version 2.20)Use the enterNotifyEvent signal.

Emits a enter signal to the given Button.

getAlignment

buttonGetAlignment

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m (Float, Float)

Deprecated: (Since version 3.14)Access the child widget directly if you need to controlits alignment.

Gets the alignment of the child in the button.

Since: 2.4

getAlwaysShowImage

buttonGetAlwaysShowImage

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m Bool

Returns: True if the button will always show the image

Returns whether the button will ignore the Settings:gtk-button-images setting and always show the image, if available.

Since: 3.6

getEventWindow

buttonGetEventWindow

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m Window

Returns: button’s event window.

Returns the button’s event window if it is realized, Nothing otherwise. This function should be rarely needed.

Since: 2.22

getFocusOnClick

buttonGetFocusOnClick

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m Bool

Returns: True if the button grabs focus when it is clicked with the mouse.

Deprecated: (Since version 3.20)Use widgetGetFocusOnClick instead

Returns whether the button grabs focus when it is clicked with the mouse. See buttonSetFocusOnClick.

Since: 2.4

getImage

buttonGetImage

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m (Maybe Widget)

Returns: a Widget or Nothing in case there is no image

Gets the widget that is currenty set as the image of button. This may have been explicitly set by buttonSetImage or constructed by buttonNewFromStock.

Since: 2.6

getImagePosition

buttonGetImagePosition

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m PositionType

Returns: the position

Gets the position of the image relative to the text inside the button.

Since: 2.10

getLabel

buttonGetLabel

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m Text

Returns: The text of the label widget. This string is owned by the widget and must not be modified or freed.

Fetches the text from the label of the button, as set by buttonSetLabel. If the label text has not been set the return value will be Nothing. This will be the case if you create an empty button with buttonNew to use as a container.

getRelief

buttonGetRelief

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: The Button you want the ReliefStyle from.

-> m ReliefStyle

Returns: The current ReliefStyle

Returns the current relief style of the given Button.

getUseStock

buttonGetUseStock

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m Bool

Returns: True if the button label is used to select a stock item instead of being used directly as the label text.

Deprecated: (Since version 3.10)

Returns whether the button label is a stock item.

getUseUnderline

buttonGetUseUnderline

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> m Bool

Returns: True if an embedded underline in the button label indicates the mnemonic accelerator keys.

Returns whether an embedded underline in the button label indicates a mnemonic. See gtk_button_set_use_underline ().

leave

buttonLeave

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: The Button you want to send the signal to.

-> m ()

Deprecated: (Since version 2.20)Use the leaveNotifyEvent signal.

Emits a leave signal to the given Button.

new

buttonNew

Arguments

:: (HasCallStack, MonadIO m)

=> m Button

Returns: The newly created Button widget.

Creates a new Button widget. To add a child widget to the button, use containerAdd.

newFromIconName

buttonNewFromIconName

Arguments

:: (HasCallStack, MonadIO m)

=> Maybe Text

iconName: an icon name or Nothing

-> Int32

size: an icon size (tIconSize)

-> m Button

Returns: a new Button displaying the themed icon

Creates a new button containing an icon from the current icon theme.

If the icon name isn’t known, a “broken image” icon will be displayed instead. If the current icon theme is changed, the icon will be updated appropriately.

This function is a convenience wrapper around buttonNew and buttonSetImage.

Since: 3.10

newFromStock

buttonNewFromStock

Arguments

:: (HasCallStack, MonadIO m)

=> Text

stockId: the name of the stock item

-> m Button

Returns: a new Button

Deprecated: (Since version 3.10)Stock items are deprecated. Use buttonNewWithLabelinstead.

Creates a new Button containing the image and text from a [stock item][gtkstock]. Some stock ids have preprocessor macros like STOCK_OK and STOCK_APPLY.

If stockId is unknown, then it will be treated as a mnemonic label (as for buttonNewWithMnemonic).

newWithLabel

buttonNewWithLabel

Arguments

:: (HasCallStack, MonadIO m)

=> Text

label: The text you want the Label to hold.

-> m Button

Returns: The newly created Button widget.

Creates a Button widget with a Label child containing the given text.

newWithMnemonic

buttonNewWithMnemonic

Arguments

:: (HasCallStack, MonadIO m)

=> Text

label: The text of the button, with an underscore in front of the mnemonic character

-> m Button

Returns: a new Button

Creates a new Button containing a label. If characters in label are preceded by an underscore, they are underlined. If you need a literal underscore character in a label, use “__” (two underscores). The first underlined character represents a keyboard accelerator called a mnemonic. Pressing Alt and that key activates the button.

pressed

buttonPressed

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: The Button you want to send the signal to.

-> m ()

Deprecated: (Since version 2.20)Use the buttonPressEvent signal.

Emits a pressed signal to the given Button.

released

buttonReleased

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: The Button you want to send the signal to.

-> m ()

Deprecated: (Since version 2.20)Use the buttonReleaseEvent signal.

Emits a released signal to the given Button.

setAlignment

buttonSetAlignment

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> Float

xalign: the horizontal position of the child, 0.0 is left aligned, 1.0 is right aligned

-> Float

yalign: the vertical position of the child, 0.0 is top aligned, 1.0 is bottom aligned

-> m ()

Deprecated: (Since version 3.14)Access the child widget directly if you need to controlits alignment.

Sets the alignment of the child. This property has no effect unless the child is a Misc or a Alignment.

Since: 2.4

setAlwaysShowImage

buttonSetAlwaysShowImage

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> Bool

alwaysShow: True if the menuitem should always show the image

-> m ()

If True, the button will ignore the Settings:gtk-button-images setting and always show the image, if available.

Use this property if the button would be useless or hard to use without the image.

Since: 3.6

setFocusOnClick

buttonSetFocusOnClick

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> Bool

focusOnClick: whether the button grabs focus when clicked with the mouse

-> m ()

Deprecated: (Since version 3.20)Use widgetSetFocusOnClick instead

Sets whether the button will grab focus when it is clicked with the mouse. Making mouse clicks not grab focus is useful in places like toolbars where you don’t want the keyboard focus removed from the main area of the application.

Since: 2.4

setImage

buttonSetImage

Arguments

:: (HasCallStack, MonadIO m, IsButton a, IsWidget b)

=> a

button: a Button

-> Maybe b

image: a widget to set as the image for the button, or Nothing to unset

-> m ()

Set the image of button to the given widget. The image will be displayed if the label text is Nothing or if Button:always-show-image is True. You don’t have to call widgetShow on image yourself.

Since: 2.6

setImagePosition

buttonSetImagePosition

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> PositionType

position: the position

-> m ()

Sets the position of the image relative to the text inside the button.

Since: 2.10

setLabel

buttonSetLabel

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> Text

label: a string

-> m ()

Sets the text of the label of the button to str. This text is also used to select the stock item if buttonSetUseStock is used.

This will also clear any previously set labels.

setRelief

buttonSetRelief

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: The Button you want to set relief styles of

-> ReliefStyle

relief: The GtkReliefStyle as described above

-> m ()

Sets the relief style of the edges of the given Button widget. Two styles exist, ReliefStyleNormal and ReliefStyleNone. The default style is, as one can guess, ReliefStyleNormal. The deprecated value ReliefStyleHalf behaves the same as ReliefStyleNormal.

setUseStock

buttonSetUseStock

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> Bool

useStock: True if the button should use a stock item

-> m ()

Deprecated: (Since version 3.10)

If True, the label set on the button is used as a stock id to select the stock item for the button.

setUseUnderline

buttonSetUseUnderline

Arguments

:: (HasCallStack, MonadIO m, IsButton a)

=> a

button: a Button

-> Bool

useUnderline: True if underlines in the text indicate mnemonics

-> m ()

If true, an underline in the text of the button label indicates the next character should be used for the mnemonic accelerator key.

Properties

alwaysShowImage

If True, the button will ignore the Settings:gtk-button-images setting and always show the image, if available.

Use this property if the button would be useless or hard to use without the image.

Since: 3.6

constructButtonAlwaysShowImage :: IsButton o => Bool -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “always-show-image” property. This is rarely needed directly, but it is used by new.

getButtonAlwaysShowImage :: (MonadIO m, IsButton o) => o -> m Bool

Get the value of the “always-show-image” property. When overloading is enabled, this is equivalent to

get button #alwaysShowImage

setButtonAlwaysShowImage :: (MonadIO m, IsButton o) => o -> Bool -> m ()

Set the value of the “always-show-image” property. When overloading is enabled, this is equivalent to

set button [ #alwaysShowImage := value ]

image

The child widget to appear next to the button text.

Since: 2.6

clearButtonImage :: (MonadIO m, IsButton o) => o -> m ()

Set the value of the “image” property to Nothing. When overloading is enabled, this is equivalent to

clear #image

constructButtonImage :: (IsButton o, IsWidget a) => a -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “image” property. This is rarely needed directly, but it is used by new.

getButtonImage :: (MonadIO m, IsButton o) => o -> m (Maybe Widget)

Get the value of the “image” property. When overloading is enabled, this is equivalent to

get button #image

setButtonImage :: (MonadIO m, IsButton o, IsWidget a) => o -> a -> m ()

Set the value of the “image” property. When overloading is enabled, this is equivalent to

set button [ #image := value ]

imagePosition

The position of the image relative to the text inside the button.

Since: 2.10

constructButtonImagePosition :: IsButton o => PositionType -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “image-position” property. This is rarely needed directly, but it is used by new.

getButtonImagePosition :: (MonadIO m, IsButton o) => o -> m PositionType

Get the value of the “image-position” property. When overloading is enabled, this is equivalent to

get button #imagePosition

setButtonImagePosition :: (MonadIO m, IsButton o) => o -> PositionType -> m ()

Set the value of the “image-position” property. When overloading is enabled, this is equivalent to

set button [ #imagePosition := value ]

label

No description available in the introspection data.

constructButtonLabel :: IsButton o => Text -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “label” property. This is rarely needed directly, but it is used by new.

getButtonLabel :: (MonadIO m, IsButton o) => o -> m Text

Get the value of the “label” property. When overloading is enabled, this is equivalent to

get button #label

setButtonLabel :: (MonadIO m, IsButton o) => o -> Text -> m ()

Set the value of the “label” property. When overloading is enabled, this is equivalent to

set button [ #label := value ]

relief

No description available in the introspection data.

constructButtonRelief :: IsButton o => ReliefStyle -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “relief” property. This is rarely needed directly, but it is used by new.

getButtonRelief :: (MonadIO m, IsButton o) => o -> m ReliefStyle

Get the value of the “relief” property. When overloading is enabled, this is equivalent to

get button #relief

setButtonRelief :: (MonadIO m, IsButton o) => o -> ReliefStyle -> m ()

Set the value of the “relief” property. When overloading is enabled, this is equivalent to

set button [ #relief := value ]

useStock

No description available in the introspection data.

constructButtonUseStock :: IsButton o => Bool -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “use-stock” property. This is rarely needed directly, but it is used by new.

getButtonUseStock :: (MonadIO m, IsButton o) => o -> m Bool

Get the value of the “use-stock” property. When overloading is enabled, this is equivalent to

get button #useStock

setButtonUseStock :: (MonadIO m, IsButton o) => o -> Bool -> m ()

Set the value of the “use-stock” property. When overloading is enabled, this is equivalent to

set button [ #useStock := value ]

useUnderline

No description available in the introspection data.

constructButtonUseUnderline :: IsButton o => Bool -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “use-underline” property. This is rarely needed directly, but it is used by new.

getButtonUseUnderline :: (MonadIO m, IsButton o) => o -> m Bool

Get the value of the “use-underline” property. When overloading is enabled, this is equivalent to

get button #useUnderline

setButtonUseUnderline :: (MonadIO m, IsButton o) => o -> Bool -> m ()

Set the value of the “use-underline” property. When overloading is enabled, this is equivalent to

set button [ #useUnderline := value ]

xalign

If the child of the button is a Misc or Alignment, this property can be used to control its horizontal alignment. 0.0 is left aligned, 1.0 is right aligned.

Since: 2.4

constructButtonXalign :: IsButton o => Float -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “xalign” property. This is rarely needed directly, but it is used by new.

getButtonXalign :: (MonadIO m, IsButton o) => o -> m Float

Get the value of the “xalign” property. When overloading is enabled, this is equivalent to

get button #xalign

setButtonXalign :: (MonadIO m, IsButton o) => o -> Float -> m ()

Set the value of the “xalign” property. When overloading is enabled, this is equivalent to

set button [ #xalign := value ]

yalign

If the child of the button is a Misc or Alignment, this property can be used to control its vertical alignment. 0.0 is top aligned, 1.0 is bottom aligned.

Since: 2.4

constructButtonYalign :: IsButton o => Float -> IO (GValueConstruct o)

Construct a GValueConstruct with valid value for the “yalign” property. This is rarely needed directly, but it is used by new.

getButtonYalign :: (MonadIO m, IsButton o) => o -> m Float

Get the value of the “yalign” property. When overloading is enabled, this is equivalent to

get button #yalign

setButtonYalign :: (MonadIO m, IsButton o) => o -> Float -> m ()

Set the value of the “yalign” property. When overloading is enabled, this is equivalent to

set button [ #yalign := value ]

Signals

activate

type ButtonActivateCallback = IO ()

The activate signal on GtkButton is an action signal and emitting it causes the button to animate press then release. Applications should never connect to this signal, but use the clicked signal.

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

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

afterButtonActivate :: (IsButton a, MonadIO m) => a -> ButtonActivateCallback -> m SignalHandlerId

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

after button #activate callback

genClosure_ButtonActivate :: MonadIO m => ButtonActivateCallback -> m (GClosure C_ButtonActivateCallback)

Wrap the callback into a GClosure.

mk_ButtonActivateCallback :: C_ButtonActivateCallback -> IO (FunPtr C_ButtonActivateCallback)

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

noButtonActivateCallback :: Maybe ButtonActivateCallback

A convenience synonym for Nothing :: Maybe ButtonActivateCallback.

onButtonActivate :: (IsButton a, MonadIO m) => a -> ButtonActivateCallback -> m SignalHandlerId

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

on button #activate callback

wrap_ButtonActivateCallback :: ButtonActivateCallback -> C_ButtonActivateCallback

Wrap a ButtonActivateCallback into a C_ButtonActivateCallback.

clicked

type ButtonClickedCallback = IO ()

Emitted when the button has been activated (pressed and released).

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

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

afterButtonClicked :: (IsButton a, MonadIO m) => a -> ButtonClickedCallback -> m SignalHandlerId

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

after button #clicked callback

genClosure_ButtonClicked :: MonadIO m => ButtonClickedCallback -> m (GClosure C_ButtonClickedCallback)

Wrap the callback into a GClosure.

mk_ButtonClickedCallback :: C_ButtonClickedCallback -> IO (FunPtr C_ButtonClickedCallback)

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

noButtonClickedCallback :: Maybe ButtonClickedCallback

A convenience synonym for Nothing :: Maybe ButtonClickedCallback.

onButtonClicked :: (IsButton a, MonadIO m) => a -> ButtonClickedCallback -> m SignalHandlerId

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

on button #clicked callback

wrap_ButtonClickedCallback :: ButtonClickedCallback -> C_ButtonClickedCallback

Wrap a ButtonClickedCallback into a C_ButtonClickedCallback.

enter

type ButtonEnterCallback = IO ()

Deprecated: (Since version 2.8)Use the enterNotifyEvent signal.

Emitted when the pointer enters the button.

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

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

afterButtonEnter :: (IsButton a, MonadIO m) => a -> ButtonEnterCallback -> m SignalHandlerId

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

after button #enter callback

genClosure_ButtonEnter :: MonadIO m => ButtonEnterCallback -> m (GClosure C_ButtonEnterCallback)

Wrap the callback into a GClosure.

mk_ButtonEnterCallback :: C_ButtonEnterCallback -> IO (FunPtr C_ButtonEnterCallback)

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

noButtonEnterCallback :: Maybe ButtonEnterCallback

A convenience synonym for Nothing :: Maybe ButtonEnterCallback.

onButtonEnter :: (IsButton a, MonadIO m) => a -> ButtonEnterCallback -> m SignalHandlerId

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

on button #enter callback

wrap_ButtonEnterCallback :: ButtonEnterCallback -> C_ButtonEnterCallback

Wrap a ButtonEnterCallback into a C_ButtonEnterCallback.

leave

type ButtonLeaveCallback = IO ()

Deprecated: (Since version 2.8)Use the leaveNotifyEvent signal.

Emitted when the pointer leaves the button.

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

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

afterButtonLeave :: (IsButton a, MonadIO m) => a -> ButtonLeaveCallback -> m SignalHandlerId

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

after button #leave callback

genClosure_ButtonLeave :: MonadIO m => ButtonLeaveCallback -> m (GClosure C_ButtonLeaveCallback)

Wrap the callback into a GClosure.

mk_ButtonLeaveCallback :: C_ButtonLeaveCallback -> IO (FunPtr C_ButtonLeaveCallback)

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

noButtonLeaveCallback :: Maybe ButtonLeaveCallback

A convenience synonym for Nothing :: Maybe ButtonLeaveCallback.

onButtonLeave :: (IsButton a, MonadIO m) => a -> ButtonLeaveCallback -> m SignalHandlerId

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

on button #leave callback

wrap_ButtonLeaveCallback :: ButtonLeaveCallback -> C_ButtonLeaveCallback

Wrap a ButtonLeaveCallback into a C_ButtonLeaveCallback.

pressed

type ButtonPressedCallback = IO ()

Deprecated: (Since version 2.8)Use the buttonPressEvent signal.

Emitted when the button is pressed.

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

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

afterButtonPressed :: (IsButton a, MonadIO m) => a -> ButtonPressedCallback -> m SignalHandlerId

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

after button #pressed callback

genClosure_ButtonPressed :: MonadIO m => ButtonPressedCallback -> m (GClosure C_ButtonPressedCallback)

Wrap the callback into a GClosure.

mk_ButtonPressedCallback :: C_ButtonPressedCallback -> IO (FunPtr C_ButtonPressedCallback)

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

noButtonPressedCallback :: Maybe ButtonPressedCallback

A convenience synonym for Nothing :: Maybe ButtonPressedCallback.

onButtonPressed :: (IsButton a, MonadIO m) => a -> ButtonPressedCallback -> m SignalHandlerId

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

on button #pressed callback

wrap_ButtonPressedCallback :: ButtonPressedCallback -> C_ButtonPressedCallback

Wrap a ButtonPressedCallback into a C_ButtonPressedCallback.

released

type ButtonReleasedCallback = IO ()

Deprecated: (Since version 2.8)Use the buttonReleaseEvent signal.

Emitted when the button is released.

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

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

afterButtonReleased :: (IsButton a, MonadIO m) => a -> ButtonReleasedCallback -> m SignalHandlerId

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

after button #released callback

genClosure_ButtonReleased :: MonadIO m => ButtonReleasedCallback -> m (GClosure C_ButtonReleasedCallback)

Wrap the callback into a GClosure.

mk_ButtonReleasedCallback :: C_ButtonReleasedCallback -> IO (FunPtr C_ButtonReleasedCallback)

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

noButtonReleasedCallback :: Maybe ButtonReleasedCallback

A convenience synonym for Nothing :: Maybe ButtonReleasedCallback.

onButtonReleased :: (IsButton a, MonadIO m) => a -> ButtonReleasedCallback -> m SignalHandlerId

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

on button #released callback

wrap_ButtonReleasedCallback :: ButtonReleasedCallback -> C_ButtonReleasedCallback

Wrap a ButtonReleasedCallback into a C_ButtonReleasedCallback.