Form.HelpButton Form.HelpButton Form.HelpButton Form.HelpButton Property

定義

フォームのキャプション ボックスに [ヘルプ] ボタンを表示するかどうかを示す値を取得または設定します。Gets or sets a value indicating whether a Help button should be displayed in the caption box of the form.

public:
 property bool HelpButton { bool get(); void set(bool value); };
public bool HelpButton { get; set; }
member this.HelpButton : bool with get, set
Public Property HelpButton As Boolean

プロパティ値

フォームのキャプション バーにヘルプ ボタンを表示する場合は true。それ以外の場合は falsetrue to display a Help button in the form's caption bar; otherwise, false. 既定値は、false です。The default is false.

次のコード例は、の新しいインスタンスを作成、Formを呼び出すと、 ShowDialog ダイアログ ボックスとしてフォームを表示するメソッド。The following code example creates a new instance of a Form and calls the ShowDialog method to display the form as a dialog box. 例のセット、 FormBorderStyleAcceptButtonCancelButtonMinimizeBoxMaximizeBox、およびStartPosition ダイアログ ボックスに、フォームの機能と外観を変更するプロパティ。The example sets the FormBorderStyle, AcceptButton, CancelButton, MinimizeBox, MaximizeBox, and StartPosition properties to change the appearance and functionality of the form to a dialog box. また、例では、Addメソッドは、フォームのControls2 つ追加するコレクションButtonコントロール。The example also uses the Add method of the form's Controls collection to add two Button controls. この例では、 HelpButton ダイアログ ボックスのキャプション バーに、ヘルプ ボタンを表示するプロパティ。The example uses the HelpButton property to display a Help button in the caption bar of the dialog box.

public:
   void CreateMyForm()
   {
      // Create a new instance of the form.
      Form^ form1 = gcnew Form;
      // Create two buttons to use as the accept and cancel buttons.
      Button^ button1 = gcnew Button;
      Button^ button2 = gcnew Button;
      
      // Set the text of button1 to "OK".
      button1->Text = "OK";
      // Set the position of the button on the form.
      button1->Location = Point(10,10);
      // Set the text of button2 to "Cancel".
      button2->Text = "Cancel";
      // Set the position of the button based on the location of button1.
      button2->Location =
         Point( button1->Left, button1->Height + button1->Top + 10 );
      // Set the caption bar text of the form.   
      form1->Text = "My Dialog Box";
      // Display a help button on the form.
      form1->HelpButton = true;
      
      // Define the border style of the form to a dialog box.
      form1->FormBorderStyle = ::FormBorderStyle::FixedDialog;
      // Set the MaximizeBox to false to remove the maximize box.
      form1->MaximizeBox = false;      
      // Set the MinimizeBox to false to remove the minimize box.
      form1->MinimizeBox = false;
      // Set the accept button of the form to button1.
      form1->AcceptButton = button1;
      // Set the cancel button of the form to button2.
      form1->CancelButton = button2;
      // Set the start position of the form to the center of the screen.
      form1->StartPosition = FormStartPosition::CenterScreen;
      
      // Add button1 to the form.
      form1->Controls->Add( button1 );
      // Add button2 to the form.
      form1->Controls->Add( button2 );
      // Display the form as a modal dialog box.
      form1->ShowDialog();
   }
public void CreateMyForm()
{
   // Create a new instance of the form.
   Form form1 = new Form();
   // Create two buttons to use as the accept and cancel buttons.
   Button button1 = new Button ();
   Button button2 = new Button ();
  
   // Set the text of button1 to "OK".
   button1.Text = "OK";
   // Set the position of the button on the form.
   button1.Location = new Point (10, 10);
   // Set the text of button2 to "Cancel".
   button2.Text = "Cancel";
   // Set the position of the button based on the location of button1.
   button2.Location
      = new Point (button1.Left, button1.Height + button1.Top + 10);
   // Set the caption bar text of the form.   
   form1.Text = "My Dialog Box";
   // Display a help button on the form.
   form1.HelpButton = true;

   // Define the border style of the form to a dialog box.
   form1.FormBorderStyle = FormBorderStyle.FixedDialog;
   // Set the MaximizeBox to false to remove the maximize box.
   form1.MaximizeBox = false;
   // Set the MinimizeBox to false to remove the minimize box.
   form1.MinimizeBox = false;
   // Set the accept button of the form to button1.
   form1.AcceptButton = button1;
   // Set the cancel button of the form to button2.
   form1.CancelButton = button2;
   // Set the start position of the form to the center of the screen.
   form1.StartPosition = FormStartPosition.CenterScreen;
   
   // Add button1 to the form.
   form1.Controls.Add(button1);
   // Add button2 to the form.
   form1.Controls.Add(button2);
   
   // Display the form as a modal dialog box.
   form1.ShowDialog();
}
Public Sub CreateMyForm()
    ' Create a new instance of the form.
    Dim form1 As New Form()
    ' Create two buttons to use as the accept and cancel buttons.
    Dim button1 As New Button()
    Dim button2 As New Button()
       
    ' Set the text of button1 to "OK".
    button1.Text = "OK"
    ' Set the position of the button on the form.
    button1.Location = New Point(10, 10)
    ' Set the text of button2 to "Cancel".
    button2.Text = "Cancel"
    ' Set the position of the button based on the location of button1.
    button2.Location = _
       New Point(button1.Left, button1.Height + button1.Top + 10)
    ' Set the caption bar text of the form.   
    form1.Text = "My Dialog Box"
    ' Display a help button on the form.
    form1.HelpButton = True
       
    ' Define the border style of the form to a dialog box.
    form1.FormBorderStyle = FormBorderStyle.FixedDialog
    ' Set the MaximizeBox to false to remove the maximize box.
    form1.MaximizeBox = False
    ' Set the MinimizeBox to false to remove the minimize box.
    form1.MinimizeBox = False
    ' Set the accept button of the form to button1.
    form1.AcceptButton = button1
    ' Set the cancel button of the form to button2.
    form1.CancelButton = button2
    ' Set the start position of the form to the center of the screen.
    form1.StartPosition = FormStartPosition.CenterScreen
       
    ' Add button1 to the form.
    form1.Controls.Add(button1)
    ' Add button2 to the form.
    form1.Controls.Add(button2)
       
    ' Display the form as a modal dialog box.
    form1.ShowDialog()
End Sub

注釈

このプロパティを設定するとtrue、キャプション バーの左側に疑問符が表示された小さいボタンが表示されます、閉じるボタンをクリックします。When this property is set to true, a small button with a question mark appears in the caption bar to the left of the Close button. このボタンを使用すると、アプリケーションのヘルプを表示します。You can use this button to display help for your application. イベント ハンドラーを作成することができます、HelpRequestedフォームの [ヘルプ] ボタンがクリックされたときに、ユーザーにヘルプ情報を表示するイベントです。You can create an event handler for the HelpRequested event to display Help information to the user when the Help button of the form is clicked.

ヘルプ ボタンをフォームの値を表示するControlBoxプロパティである必要がありますtrue、その既定値。To display a Help button, the value of the form's ControlBox property must be true, its default value. ControlBoxプロパティは、キャプション バーの右上隅が最大化ボタン、最小化ボタン、ヘルプ ボタン、および閉じるボタンなどのコントロールを含むかどうかを決定します。The ControlBox property determines whether the upper-right corner of the caption bar contains controls such as a maximize button, a minimize button, a help button, and a close button. さらに、設定することする必要がありますも、フォームのFormBorderStyleプロパティをFormBorderStyle.FixedSingleFormBorderStyle.SizableFormBorderStyle.Fixed3D、またはFormBorderStyle.FixedDialogします。In addition, you must also set the form's FormBorderStyle property to FormBorderStyle.FixedSingle, FormBorderStyle.Sizable, FormBorderStyle.Fixed3D, or FormBorderStyle.FixedDialog.

重要

値、HelpButtonプロパティは、最大化または最小化ボタンが表示されます。The value of the HelpButton property is ignored if the Maximize or Minimize buttons are shown.

適用対象

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