ScrollBars Enumeração

Definição

public enum class ScrollBars

public enum ScrollBars

type ScrollBars = 

Public Enum ScrollBars

Herança

Object

ValueType

Enum

ScrollBars

Campos

Exemplos

O exemplo de código seguinte demonstra como usar a ScrollBars enumeração. Para executar o exemplo, cole o código seguinte num formulário. Chame o SetFourDifferentScrollBars método no construtor do formulário ou Load no método de gestão de eventos.

   // 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

Observações

Esta enumeração é usada por TextBox.ScrollBars.

Nem todos os controlos suportam barras de scroll. Use esta enumeração para especificar quais as barras de deslocamento que serão visíveis num controlo, seja em algumas ou todas as circunstâncias.

Ver também

• TextBox