HwndSource.IKeyboardInputSink.HasFocusWithin 方法

定义

命名空间:

System.Windows.Interop

程序集:

PresentationCore.dll

有关此成员的说明，请参见 IList.Remove(Object)。

 virtual bool System.Windows.Interop.IKeyboardInputSink.HasFocusWithin() = System::Windows::Interop::IKeyboardInputSink::HasFocusWithin;

bool IKeyboardInputSink.HasFocusWithin ();

abstract member System.Windows.Interop.IKeyboardInputSink.HasFocusWithin : unit -> bool
override this.System.Windows.Interop.IKeyboardInputSink.HasFocusWithin : unit -> bool

Function HasFocusWithin () As Boolean Implements IKeyboardInputSink.HasFocusWithin

返回

Boolean

如果接收器或其所包含的组件之一具有焦点，则为 true；否则为 false。

实现

HasFocusWithin()

注解

此成员是显式接口成员的实现。 它只能在 HwndSource 实例被强制转换为 IKeyboardInputSink 接口时使用。