FormStartPosition 枚举

指定窗体的初始位置。

**命名空间:**System.Windows.Forms
**程序集:**System.Windows.Forms(在 system.windows.forms.dll 中)

语法

声明
<ComVisibleAttribute(True)> _
Public Enumeration FormStartPosition
用法
Dim instance As FormStartPosition
[ComVisibleAttribute(true)] 
public enum FormStartPosition
[ComVisibleAttribute(true)] 
public enum class FormStartPosition
/** @attribute ComVisibleAttribute(true) */ 
public enum FormStartPosition
ComVisibleAttribute(true) 
public enum FormStartPosition

成员

  成员名称 说明
CenterParent 窗体在其父窗体中居中。 
CenterScreen 窗体在当前显示窗口中居中,其尺寸在窗体大小中指定。 
Manual 窗体的位置由 Location 属性确定。 
WindowsDefaultBounds 窗体定位在 Windows 默认位置,其边界也由 Windows 默认决定。 
WindowsDefaultLocation 窗体定位在 Windows 默认位置,其尺寸在窗体大小中指定。 

备注

Form 类的 StartPosition 属性使用此枚举。它表示窗体的不同起始位置。默认的起始位置是 WindowsDefaultLocation

示例

在此示例中,可以将窗体的起始位置更改到屏幕中心并使用标签显示位置信息。此示例假定已创建了一个名为 Form1Form

Public Sub InitMyForm()
   ' Adds a label to the form.
   Dim label1 As New Label()
   label1.Location = New System.Drawing.Point(54, 128)
   label1.Name = "label1"
   label1.Size = New System.Drawing.Size(220, 80)
   label1.Text = "Start position information"
   Me.Controls.Add(label1)
   
   ' Moves the start position to the center of the screen.
   StartPosition = FormStartPosition.CenterScreen
   ' Displays the position information.
   label1.Text = "The start position is " + StartPosition
End Sub 'InitMyForm
public void InitMyForm()
{
    // Adds a label to the form.
    Label label1 = new Label();
    label1.Location = new System.Drawing.Point(54, 128);
    label1.Name = "label1";
    label1.Size = new System.Drawing.Size(220, 80);
    label1.Text = "Start position information";
    this.Controls.Add(label1);

    // Moves the start position to the center of the screen.
    StartPosition = FormStartPosition.CenterScreen;
    // Displays the position information.
    label1.Text = "The start position is " + StartPosition; 
}
public:
   void InitMyForm()
   {
      // Adds a label to the form.
      Label^ label1 = gcnew Label;
      label1->Location = System::Drawing::Point( 54, 128 );
      label1->Name = "label1";
      label1->Size = System::Drawing::Size( 220, 80 );
      label1->Text = "Start position information";
      this->Controls->Add( label1 );
      
      // Moves the start position to the center of the screen.
      StartPosition = FormStartPosition::CenterScreen;
      
      // Displays the position information.
      label1->Text = String::Format( "The start position is {0}", StartPosition );
   }
public void InitMyForm()
{
    // Adds a label to the form.
    Label label1 = new Label();

    label1.set_Location(new System.Drawing.Point(54, 128));
    label1.set_Name("label1");
    label1.set_Size(new System.Drawing.Size(220, 80));
    label1.set_Text("Start position information");
    this.get_Controls().Add(label1);

    // Moves the start position to the center of the screen.
    set_StartPosition(FormStartPosition.CenterScreen);

    // Displays the position information.
    label1.set_Text("The start position is " + get_StartPosition());
} //InitMyForm

平台

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

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表,请参见系统要求

版本信息

.NET Framework

受以下版本支持:2.0、1.1、1.0

请参见

参考

System.Windows.Forms 命名空间
Form.StartPosition 属性