ScrollBars Перечисление

Определение

Пространство имен:

System.Windows.Forms

Сборка:

System.Windows.Forms.dll

Указывает, какие полосы прокрутки будут видны в элементе управления.

public enum class ScrollBars

public enum ScrollBars

type ScrollBars = 

Public Enum ScrollBars

Наследование

Object

ValueType

Enum

ScrollBars

Поля

Both	3	Отображаются и горизонтальные, и вертикальные полосы прокрутки.
Horizontal	1	Отображаются только горизонтальные полосы прокрутки.
None	0	Полосы прокрутки не отображаются.
Vertical	2	Отображаются только вертикальные полосы прокрутки.

Примеры

В следующем примере кода показано, как использовать перечисление ScrollBars . Чтобы выполнить пример, вставьте следующий код в форму. SetFourDifferentScrollBars Вызовите метод в конструкторе формы или Load методе обработки событий.

   // Declare four textboxes.
internal:
   System::Windows::Forms::TextBox^ vertical;
   System::Windows::Forms::TextBox^ horizontal;
   System::Windows::Forms::TextBox^ both;
   System::Windows::Forms::TextBox^ none;

private:
   void SetFourDifferentScrollBars()
   {
      this->vertical = gcnew System::Windows::Forms::TextBox;
      this->horizontal = gcnew System::Windows::Forms::TextBox;
      this->both = gcnew System::Windows::Forms::TextBox;
      this->none = gcnew System::Windows::Forms::TextBox;
      
      // Create a string for the Text property.
      String^ startString = "The scroll bar style for my textbox is: ";
      
      // Set the location of the four textboxes.
      horizontal->Location = Point(10,10);
      vertical->Location = Point(10,70);
      none->Location = Point(10,170);
      both->Location = Point(10,110);
      
      // For horizonal scroll bars, the Multiline property must
      // be true and the WordWrap property must be false.
      // Increase the size of the Height property to ensure the 
      // scroll bar is visible.
      horizontal->ScrollBars = ScrollBars::Horizontal;
      horizontal->Multiline = true;
      horizontal->WordWrap = false;
      horizontal->Height = 40;
      horizontal->Text = String::Concat( startString, ScrollBars::Horizontal );
      
      // For the vertical scroll bar, Multiline must be true.
      vertical->ScrollBars = ScrollBars::Vertical;
      vertical->Multiline = true;
      vertical->Text = String::Concat( startString, ScrollBars::Vertical );
      
      // For both scroll bars, the Multiline property 
      // must be true, and the WordWrap property must be false.
      // Increase the size of the Height property to ensure the 
      // scroll bar is visible.
      both->ScrollBars = ScrollBars::Both;
      both->Multiline = true;
      both->WordWrap = false;
      both->Height = 40;
      both->AcceptsReturn = true;
      both->Text = String::Concat( startString, ScrollBars::Both );
      
      // The none scroll bar does not require specific 
      // property settings.
      none->ScrollBars = ScrollBars::None;
      none->Text = String::Concat( startString, ScrollBars::None );
      
      // Add the textboxes to the form.
      this->Controls->Add( this->vertical );
      this->Controls->Add( this->horizontal );
      this->Controls->Add( this->both );
      this->Controls->Add( this->none );
   }

// Declare four textboxes.
internal System.Windows.Forms.TextBox vertical;
internal System.Windows.Forms.TextBox horizontal;
internal System.Windows.Forms.TextBox both;
internal System.Windows.Forms.TextBox none;

private void SetFourDifferentScrollBars()
{
    
    this.vertical = new System.Windows.Forms.TextBox();
    this.horizontal = new System.Windows.Forms.TextBox();
    this.both = new System.Windows.Forms.TextBox();
    this.none = new System.Windows.Forms.TextBox();

    // Create a string for the Text property.
    string startString = "The scroll bar style for my textbox is: ";

    // Set the location of the four textboxes.
    horizontal.Location = new Point(10, 10);
    vertical.Location = new Point(10, 70);
    none.Location = new Point(10, 170);
    both.Location = new Point(10, 110);

    // For horizonal scroll bars, the Multiline property must
    // be true and the WordWrap property must be false.
    // Increase the size of the Height property to ensure the 
    // scroll bar is visible.
    horizontal.ScrollBars = ScrollBars.Horizontal;
    horizontal.Multiline = true;
    horizontal.WordWrap = false;
    horizontal.Height = 40;
    horizontal.Text = startString + 
        ScrollBars.Horizontal.ToString();

    // For the vertical scroll bar, Multiline must be true.
    vertical.ScrollBars = ScrollBars.Vertical;
    vertical.Multiline = true;
    vertical.Text = startString + ScrollBars.Vertical.ToString();

    // For both scroll bars, the Multiline property 
    // must be true, and the WordWrap property must be false.
    // Increase the size of the Height property to ensure the 
    // scroll bar is visible.
    both.ScrollBars = ScrollBars.Both;
    both.Multiline = true;
    both.WordWrap = false;
    both.Height = 40;
    both.AcceptsReturn = true;
    both.Text = startString + ScrollBars.Both.ToString();

    // The none scroll bar does not require specific 
    // property settings.
    none.ScrollBars = ScrollBars.None;
    none.Text = startString + ScrollBars.None.ToString();

    // Add the textboxes to the form.
    this.Controls.Add(this.vertical);
    this.Controls.Add(this.horizontal);
    this.Controls.Add(this.both);
    this.Controls.Add(this.none);
}

' Declare four textboxes.
Friend WithEvents vertical As System.Windows.Forms.TextBox
Friend WithEvents horizontal As System.Windows.Forms.TextBox
Friend WithEvents both As System.Windows.Forms.TextBox
Friend WithEvents none As System.Windows.Forms.TextBox
    
Private Sub SetFourDifferentScrollBars()

    Me.vertical = New System.Windows.Forms.TextBox
    Me.horizontal = New System.Windows.Forms.TextBox
    Me.both = New System.Windows.Forms.TextBox
    Me.none = New System.Windows.Forms.TextBox

    ' Create a string for the Text property.
    Dim startString As String = _
        "The scroll bar style for my textbox is: "

    ' Set the location of the four textboxes.
    horizontal.Location = New Point(10, 10)
    vertical.Location = New Point(10, 70)
    none.Location = New Point(10, 170)
    both.Location = New Point(10, 110)

    ' For horizonal scroll bars, the Multiline property must
    ' be true and the WordWrap property must be false.
    ' Increase the size of the Height property to ensure the 
    ' scroll bar is visible.
    horizontal.ScrollBars = ScrollBars.Horizontal
    horizontal.Multiline = True
    horizontal.WordWrap = False
    horizontal.Height = 40
    horizontal.Text = startString & ScrollBars.Horizontal.ToString()

    ' For the vertical scroll bar, Multiline must be true.
    vertical.ScrollBars = ScrollBars.Vertical
    vertical.Multiline = True
    vertical.Text = startString & ScrollBars.Vertical.ToString()

    ' For both scroll bars, the Multiline property 
    ' must be true, and the WordWrap property must be false.
    ' Increase the size of the Height property to ensure the 
    ' scroll bar is visible.
    both.ScrollBars = ScrollBars.Both
    both.Multiline = True
    both.WordWrap = False
    both.Height = 40
    both.AcceptsReturn = True
    both.Text = startString & ScrollBars.Both.ToString()

    ' The none scroll bar does not require specific 
    ' property settings.
    none.ScrollBars = ScrollBars.None
    none.Text = startString & ScrollBars.None.ToString()

    ' Add the textboxes to the form.
    Me.Controls.Add(Me.vertical)
    Me.Controls.Add(Me.horizontal)
    Me.Controls.Add(Me.both)
    Me.Controls.Add(Me.none)

End Sub

Комментарии

Это перечисление используется TextBox.ScrollBars.

Не все элементы управления поддерживают полосы прокрутки. Используйте это перечисление, чтобы указать, какие полосы прокрутки будут отображаться в элементе управления при определенных или всех обстоятельствах.

См. также раздел

• TextBox