Struct gtk::AccelLabel [−][src]
pub struct AccelLabel(_);
Expand description
The AccelLabel widget is a subclass of Label that also displays an
accelerator key on the right of the label text, e.g. “Ctrl+S”.
It is commonly used in menus to show the keyboard short-cuts for commands.
The accelerator key to display is typically not set explicitly (although it
can be, with AccelLabelExt::set_accel()). Instead, the AccelLabel displays
the accelerators which have been added to a particular widget. This widget is
set by calling AccelLabelExt::set_accel_widget().
For example, a MenuItem widget may have an accelerator added to emit
the “activate” signal when the “Ctrl+S” key combination is pressed.
A AccelLabel is created and added to the MenuItem, and
AccelLabelExt::set_accel_widget() is called with the MenuItem as the
second argument. The AccelLabel will now display “Ctrl+S” after its label.
Note that creating a MenuItem with MenuItem::with_label() (or
one of the similar functions for CheckMenuItem and RadioMenuItem)
automatically adds a AccelLabel to the MenuItem and calls
AccelLabelExt::set_accel_widget() to set it up for you.
A AccelLabel will only display accelerators which have AccelFlags::VISIBLE
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.
Creating a simple menu item with an accelerator key.
⚠️ The following code is in C ⚠️
GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
GtkWidget *menu = gtk_menu_new ();
GtkWidget *save_item;
GtkAccelGroup *accel_group;
// Create a GtkAccelGroup and add it to the window.
accel_group = gtk_accel_group_new ();
gtk_window_add_accel_group (GTK_WINDOW (window), accel_group);
// Create the menu item using the convenience function.
save_item = gtk_menu_item_new_with_label ("Save");
gtk_widget_show (save_item);
gtk_container_add (GTK_CONTAINER (menu), save_item);
// Now add the accelerator to the GtkMenuItem. Note that since we
// called gtk_menu_item_new_with_label() to create the GtkMenuItem
// the GtkAccelLabel is automatically set up to display the
// GtkMenuItem accelerators. We just need to make sure we use
// GTK_ACCEL_VISIBLE here.
gtk_widget_add_accelerator (save_item, "activate", accel_group,
GDK_KEY_s, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE);
CSS nodes
⚠️ The following code is in plain ⚠️
label
╰── accelerator
Like Label, GtkAccelLabel has a main CSS node with the name label.
It adds a subnode with name accelerator.
Implements
AccelLabelExt, LabelExt, [MiscExt][trait@crate::prelude::MiscExt], WidgetExt, glib::ObjectExt, BuildableExt, WidgetExtManual, BuildableExtManual
Implementations
Creates a new builder-pattern struct instance to construct AccelLabel objects.
This method returns an instance of AccelLabelBuilder which can be used to create AccelLabel objects.
Trait Implementations
This method returns an ordering between self and other values if one exists. Read more
This method tests less than (for self and other) and is used by the < operator. Read more
This method tests less than or equal to (for self and other) and is used by the <=
operator. Read more
This method tests greater than (for self and other) and is used by the > operator. Read more
Returns the type identifier of Self.
Auto Trait Implementations
impl RefUnwindSafe for AccelLabelimpl !Send for AccelLabelimpl !Sync for AccelLabelimpl Unpin for AccelLabelimpl UnwindSafe for AccelLabelBlanket Implementations
Mutably borrows from an owned value. Read more
Upcasts an object to a superclass or interface T. Read more
Upcasts an object to a reference of its superclass or interface T. Read more
Tries to downcast to a subclass or interface implementor T. Read more
Tries to downcast to a reference of its subclass or interface implementor T. Read more
Tries to cast to an object of type T. This handles upcasting, downcasting
and casting between interface and interface implementors. All checks are performed at
runtime, while downcast and upcast will do many checks at compile-time already. Read more
Tries to cast to reference to an object of type T. This handles upcasting, downcasting
and casting between interface and interface implementors. All checks are performed at
runtime, while downcast and upcast will do many checks at compile-time already. Read more
Casts to T unconditionally. Read more
Casts to &T unconditionally. Read more
Returns true if the object is an instance of (can be cast to) T.
pub fn set_properties_from_value(
&self,
property_values: &[(&str, Value)]
) -> Result<(), BoolError>pub fn set_property<'a, N, V>(
&self,
property_name: N,
value: V
) -> Result<(), BoolError> where
V: ToValue,
N: Into<&'a str>, pub fn set_property_from_value<'a, N>(
&self,
property_name: N,
value: &Value
) -> Result<(), BoolError> where
N: Into<&'a str>, Safety Read more
Safety Read more
Safety Read more
Safety Read more
pub fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId where
F: 'static + Fn(&T, &ParamSpec) + Send + Sync, pub fn connect_notify_local<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: 'static + Fn(&T, &ParamSpec), pub unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerId where
F: Fn(&T, &ParamSpec), pub fn has_property<'a, N>(&self, property_name: N, type_: Option<Type>) -> bool where
N: Into<&'a str>, pub fn find_property<'a, N>(&self, property_name: N) -> Option<ParamSpec> where
N: Into<&'a str>, pub fn connect<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,
N: Into<&'a str>, Same as connect but takes a SignalId instead of a signal name.
pub fn connect_local<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value> + 'static,
N: Into<&'a str>, Same as connect_local but takes a SignalId instead of a signal name.
pub unsafe fn connect_unsafe<'a, N, F>(
&self,
signal_name: N,
after: bool,
callback: F
) -> Result<SignalHandlerId, BoolError> where
F: Fn(&[Value]) -> Option<Value>,
N: Into<&'a str>, Same as connect_unsafe but takes a SignalId instead of a signal name.
Emit signal by signal id.
Emit signal with details by signal id.
Emit signal by it’s name.
pub fn bind_property<'a, O, N, M>(
&'a self,
source_property: N,
target: &'a O,
target_property: M
) -> BindingBuilder<'a> where
O: ObjectType,
N: Into<&'a str>,
M: Into<&'a str>, Same as emit but takes Value for the arguments.
Same as emit_by_name but takes Value for the arguments.
Returns a SendValue clone of self.
impl<'a, T, C> FromValueOptional<'a> for T where
C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError>,
T: FromValue<'a, Checker = C>,