HtmlElement.LostFocus HtmlElement.LostFocus HtmlElement.LostFocus HtmlElement.LostFocus Event

定義

要素がユーザーの入力フォーカスを失ったときに発生します。Occurs when the element has lost user input focus.

public:
 event System::Windows::Forms::HtmlElementEventHandler ^ LostFocus;
public event System.Windows.Forms.HtmlElementEventHandler LostFocus;
member this.LostFocus : System.Windows.Forms.HtmlElementEventHandler 
Public Custom Event LostFocus As HtmlElementEventHandler 

このメンバーの使用例を次のコード例に示します。The following code example demonstrates the use of this member. この例では、イベントハンドラーがLostFocusイベントの発生を報告します。In the example, an event handler reports on the occurrence of the LostFocus event. このレポートは、イベントがいつ発生し、デバッグに役立つかを理解するのに役立ちます。This report helps you to learn when the event occurs and can assist you in debugging.

コード例を実行するには、という名前HtmlElement HtmlElement1の型のインスタンスを含むプロジェクトに貼り付けます。To run the example code, paste it into a project that contains an instance of type HtmlElement named HtmlElement1. 次に、イベントハンドラーがLostFocusイベントに関連付けられていることを確認します。Then ensure that the event handler is associated with the LostFocus event.

private void HtmlElement1_LostFocus(Object sender, HtmlElementEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "MouseButtonsPressed", e.MouseButtonsPressed );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ClientMousePosition", e.ClientMousePosition );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "OffsetMousePosition", e.OffsetMousePosition );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "MousePosition", e.MousePosition );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "BubbleEvent", e.BubbleEvent );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "KeyPressedCode", e.KeyPressedCode );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "AltKeyPressed", e.AltKeyPressed );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "CtrlKeyPressed", e.CtrlKeyPressed );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ShiftKeyPressed", e.ShiftKeyPressed );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "EventType", e.EventType );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ReturnValue", e.ReturnValue );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "FromElement", e.FromElement );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "ToElement", e.ToElement );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "LostFocus Event" );
}
Private Sub HtmlElement1_LostFocus(sender as Object, e as HtmlElementEventArgs) _ 
     Handles HtmlElement1.LostFocus

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "MouseButtonsPressed", e.MouseButtonsPressed)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "ClientMousePosition", e.ClientMousePosition)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "OffsetMousePosition", e.OffsetMousePosition)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "MousePosition", e.MousePosition)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "BubbleEvent", e.BubbleEvent)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "KeyPressedCode", e.KeyPressedCode)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "AltKeyPressed", e.AltKeyPressed)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "CtrlKeyPressed", e.CtrlKeyPressed)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "ShiftKeyPressed", e.ShiftKeyPressed)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "EventType", e.EventType)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "ReturnValue", e.ReturnValue)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "FromElement", e.FromElement)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "ToElement", e.ToElement)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"LostFocus Event")

End Sub

注釈

要素は、ユーザーがページ上で選択しLostFocusたか、またはその要素に対してメソッドをFocus呼び出しているアプリケーションによってフォーカスが返されるまで、キーストロークイベントを受信しなくなります。An element will no longer receive key stroke events after LostFocus occurs until it is given focus again, either by the user selecting it on the page or by the application calling the Focus method on that element.

このイベントを取り消すことはできません。You cannot cancel this event.

HtmlDocument BubbleEventまた、 HtmlElementEventArgsクラスのプロパティをに設定しない限り、要素のイベントは、その要素の親およびクラス自体でも発生します。true LostFocusAn LostFocus event on an element will also occur on that element's parents and on the HtmlDocument class itself, unless you set the BubbleEvent property of the HtmlElementEventArgs class to true.

適用対象

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