Form.HelpButton プロパティ
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)

/** @property */ public boolean get_HelpButton () /** @property */ public void set_HelpButton (boolean value)
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 false。既定値は false です。

このプロパティを true に設定すると、キャプション バーの [閉じる] ボタンの左側に疑問符の付いた小さなボタンが表示されます。このボタンを押すと、アプリケーションに関するヘルプが表示されます。Control クラスの HelpRequested イベントのイベント ハンドラを作成すると、フォームのヘルプ ボタンがクリックされたときにヘルプ情報を表示できます。

Form の新しいインスタンスを作成し、ShowDialog メソッドを呼び出して、フォームをダイアログ ボックスとして表示するコード例を次に示します。この例では、FormBorderStyle、AcceptButton、CancelButton、MinimizeBox、MaximizeBox、StartPosition の各プロパティを設定してフォームの外観と機能を変更し、ダイアログ ボックスとして表示します。この例では、フォームの Controls コレクションの Add メソッドを使用して、2 つの Button コントロールも追加します。また、HelpButton プロパティを使用して、ダイアログ ボックスのキャプション バーにヘルプ ボタンを表示します。
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
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: 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.set_Text("OK"); // Set the position of the button on the form. button1.set_Location(new Point(10, 10)); // Set the text of button2 to "Cancel". button2.set_Text("Cancel"); // Set the position of the button based on the location of button1. button2.set_Location(new Point(button1.get_Left(), button1.get_Height() + button1.get_Top() + 10)); // Set the caption bar text of the form. form1.set_Text("My Dialog Box"); // Display a help button on the form. form1.set_HelpButton(true); // Define the border style of the form to a dialog box. form1.set_FormBorderStyle(get_FormBorderStyle().FixedDialog); // Set the MaximizeBox to false to remove the maximize box. form1.set_MaximizeBox(false); // Set the MinimizeBox to false to remove the minimize box. form1.set_MinimizeBox(false); // Set the accept button of the form to button1. form1.set_AcceptButton(button1); // Set the cancel button of the form to button2. form1.set_CancelButton(button2); // Set the start position of the form to the center of the screen. form1.set_StartPosition(FormStartPosition.CenterScreen); // Add button1 to the form. form1.get_Controls().Add(button1); // Add button2 to the form. form1.get_Controls().Add(button2); // Display the form as a modal dialog box. form1.ShowDialog(); } //CreateMyForm

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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