Form.MaximizeBox 属性

定义

获取或设置一个值,该值指示是否在窗体的标题栏中显示“最大化”按钮。Gets or sets a value indicating whether the Maximize button is displayed in the caption bar of the form.

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

属性值

true 可显示窗体的 "最大化" 按钮;否则,falsetrue to display a Maximize button for the form; otherwise, false. 默认值为 trueThe default is true.

示例

下面的示例创建 Form 的新实例,并调用 ShowDialog 方法将窗体显示为对话框。The following example creates a new instance of a Form and calls the ShowDialog method to display the form as a dialog box. 该示例设置了 "FormBorderStyle"、"AcceptButton"、"CancelButton"、"MinimizeBox"、"MaximizeBox" 和 "StartPosition" 属性,将窗体的外观和功能更改为对话框。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. 该示例还使用窗体的 Controls 集合的 Add 方法来添加两个 Button 控件。The example also uses the Add method of the form's Controls collection to add two Button controls. 该示例使用 HelpButton 属性在对话框的标题栏中显示 "帮助" 按钮。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

注解

通过 "最大化" 按钮,用户可以将窗口放大到全屏大小。A Maximize button enables users to enlarge a window to full-screen size. 若要显示 "最大化" 按钮,则窗体的 ControlBox 属性的值必须为 true (其默认值)。To display a Maximize button, the value of the form's ControlBox property must be true, its default value. ControlBox 属性确定标题栏的右上角是否包含控件,如 "最大化" 按钮、"最小化" 按钮、"帮助" 按钮和 "关闭" 按钮。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. 此外,还必须将窗体的 FormBorderStyle 属性设置为 FormBorderStyle.FixedSingleFormBorderStyle.SizableFormBorderStyle.Fixed3DFormBorderStyle.FixedDialogIn addition, you must also set the form's FormBorderStyle property to FormBorderStyle.FixedSingle, FormBorderStyle.Sizable, FormBorderStyle.Fixed3D, or FormBorderStyle.FixedDialog.

大化按钮在窗口最大化时自动变为 "还原" 按钮。A Maximize button automatically becomes a restore button when a window is maximized. 最小化或还原窗口会自动将 "还原" 按钮改回 "最大化" 按钮。Minimizing or restoring a window automatically changes the restore button back to a Maximize button.

备注

在运行时最大程度地提高窗体生成 Resize 事件。Maximizing a form at run time generates a Resize event. WindowState 属性反映窗口的当前状态。The WindowState property reflects the current state of the window. 如果将 WindowState 属性设置为 FormWindowState.Maximized,则窗体将与 MaximizeBoxFormBorderStyle 属性中有效的设置无关。If you set the WindowState property to FormWindowState.Maximized, the form is maximized independently of whatever settings are in effect for the MaximizeBox and FormBorderStyle properties.

适用于

另请参阅