Form.FormBorderStyle プロパティ

定義

フォームの境界線スタイルを取得または設定します。Gets or sets the border style of the form.

public:
 property System::Windows::Forms::FormBorderStyle FormBorderStyle { System::Windows::Forms::FormBorderStyle get(); void set(System::Windows::Forms::FormBorderStyle value); };
public System.Windows.Forms.FormBorderStyle FormBorderStyle { get; set; }
member this.FormBorderStyle : System.Windows.Forms.FormBorderStyle with get, set
Public Property FormBorderStyle As FormBorderStyle

プロパティ値

表示するフォームの境界線スタイルを表す FormBorderStyleA FormBorderStyle that represents the style of border to display for the form. 既定値は、FormBorderStyle.Sizable です。The default is FormBorderStyle.Sizable.

例外

指定された値が有効値の範囲内にありません。The value specified is outside the range of valid values.

次の例では、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します。The following example creates a new instance of a Form and calls the ShowDialog method to display the form as a dialog box. この例では、FormBorderStyleAcceptButtonCancelButtonMinimizeBoxMaximizeBox、および StartPosition の各プロパティを設定して、フォームの外観と機能をダイアログボックスに変更します。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、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 コントロールを追加しています。The example also uses the Add method of the form's Controls collection to add two Button controls. この例では、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。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

フォームの境界線スタイルによって、フォームの外縁がどのように表示されるかが決まります。The border style of the form determines how the outer edge of the form appears. フォームの境界線の表示を変更するだけでなく、特定の罫線のスタイルによってフォームのサイズが変更されないようにすることもできます。In addition to changing the border display for a form, certain border styles prevent the form from being sized. たとえば、FormBorderStyle.FixedDialog の境界線スタイルによって、フォームの境界線がダイアログボックスの境界線に変わり、フォームのサイズが変更されないようにします。For example, the FormBorderStyle.FixedDialog border style changes the border of the form to that of a dialog box and prevents the form from being resized. 罫線のスタイルは、フォームのキャプションバーセクションのサイズや可用性にも影響する場合があります。The border style can also affect the size or availability of the caption bar section of a form.

注意

Sizable スタイルを使用すると、falseControlBox を設定し、長さ0の文字列を Textに割り当てた場合でも、ウィンドウのサイズを特定の最小値より小さくすることはできません。With the Sizable style, it is impossible to resize the window below a certain minimum value, even if you have set ControlBox to false and assigned a zero-length string to Text. 代わりに SizableToolWindow スタイルを使用して、この問題を回避することを検討してください。Consider working around this by using the SizableToolWindow style instead.

適用対象

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