IXRSelector (Compact 2013)

Статья
04/19/2017

3/28/2014

This class represents a control that a user interacts with to select an item from a collection of items.

Syntax

class IXRSelector : public IXRItemsControl

Inheritance Hierarchy

IXRItemsControl

IXRSelector

Methods

Method	Description
IXRSelector::AddSelectionChangedEventHandler	Attaches a delegate to the SelectionChanged event for this selector object.
IXRSelector::GetSelectedIndex	Retrieves the index of the selected item in the list.
IXRSelector::GetSelectedItem	Retrieves the selected item from the list.
IXRSelector::GetIsSelectionActive	Retrieves a value that indicates whether the selector has the keyboard focus.
IXRSelector::RemoveSelectionChangedEventHandler	Removes a delegate from the SelectionChanged event for this selector object.
IXRSelector::SetSelectedIndex	Sets the index of the selected item in the list.
IXRSelector::SetSelectedItem	Selects an item in the collection.
IXRSelector::SetIsSelectionActive	Sets a value that indicates whether the keyboard focus is within the selector object.

Thread Safety

Members of this class are thread-safe if you previously called IXRApplication::CreateHostFromXaml and supplied it with an XRWindowCreateParams structure that has AllowsMultipleThreadAccess set to true.

Remarks

IXRSelector is an intermediate base class for both the IXRComboBox class and the IXRListBox class. Combo boxes and list boxes can use the methods that this class defines to handle information about item selections.

Item selections can result from user interactions or changes to related property values. You can attach a delegate to the selector object, which handles events that the selector object raises when the selected item changes. To attach a delegate, call IXRTextBox::AddSelectionChangedEventHandler.

IXRSelector is an items control and inherits from IXRItemsControl. You call the selector's inherited IXRItemsControl::GetItems method to retrieve the selector's content as an item collection. GetItems returns an IXRItemCollection collection object that stores the selectable items that are displayed in the list.

If you create a class instance, use an IXRSelectorPtr smart pointer instead of a raw interface pointer. For more information, see XRPtr<Interface>.

.NET Framework Equivalent

System.Windows.Controls.Primitives.Selector

Requirements

Header	XamlRuntime.h
sysgen	SYSGEN_XAML_RUNTIME

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