Graphics.UI.Gtk.Display.AccelLabel

A label which displays an accelerator key on the right of the text

Detail

The AccelLabel widget is a subclass of Label that also displays an accelerator key on the right of the label text, e.g. 'Ctl+S'. It is commonly used in menus to show the keyboard short-cuts for commands.

The accelerator key to display is not set explicitly. Instead, the AccelLabel displays the accelerators which have been added to a particular widget. This widget is set by calling accelLabelSetAccelWidget.

For example, a MenuItem widget may have an accelerator added to emit the "activate" signal when the 'Ctl+S' key combination is pressed. A AccelLabel is created and added to the MenuItem, and accelLabelSetAccelWidget is called with the MenuItem as the second argument. The AccelLabel will now display 'Ctl+S' after its label.

Note that creating a MenuItem with menuItemNewWithLabel (or one of the similar functions for CheckMenuItem and RadioMenuItem) automatically adds a AccelLabel to the MenuItem and calls accelLabelSetAccelWidget to set it up for you.

An AccelLabel will only display accelerators which have AccelVisible set (see AccelFlags). A AccelLabel can display multiple accelerators and even signal names, though it is almost always used to display just one accelerator key.

Class Hierarchy

| GObject
| +----Object
| +----Widget
| +----Misc
| +----Label
| +----AccelLabel

Types

data AccelLabel

Instances

Eq AccelLabel

Ord AccelLabel

GObjectClass AccelLabel

AccelLabelClass AccelLabel

LabelClass AccelLabel

MiscClass AccelLabel

WidgetClass AccelLabel

class LabelClass o => AccelLabelClass o

Instances

AccelLabelClass AccelLabel

castToAccelLabel :: GObjectClass obj => obj -> AccelLabel

gTypeAccelLabel :: GType

toAccelLabel :: AccelLabelClass o => o -> AccelLabel

Constructors

accelLabelNew

Arguments

:: GlibString string

=> string

string - the label string.

-> IO AccelLabel

Creates a new AccelLabel.

Methods

accelLabelSetAccelWidget

Arguments

:: (AccelLabelClass self, WidgetClass accelWidget)

=> self

-> accelWidget

accelWidget - the widget to be monitored.

-> IO ()

Sets the widget to be monitored by this accelerator label.

accelLabelGetAccelWidget

Arguments

:: AccelLabelClass self

=> self

-> IO (Maybe Widget)

returns the object monitored by the accelerator label, or Nothing.

Fetches the widget monitored by this accelerator label. See accelLabelSetAccelWidget.

Attributes

accelLabelAccelWidget :: (AccelLabelClass self, WidgetClass accelWidget) => ReadWriteAttr self (Maybe Widget) accelWidget

The widget to be monitored for accelerator changes.