ScrollBars Enumerazione

Riferimento

Definizione

Spazio dei nomi:: System.Windows.Forms

Assembly:: System.Windows.Forms.dll

Importante

Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.

Specifica la barra di scorrimento che sarà visibile in un controllo.

public enum class ScrollBars

public enum ScrollBars

type ScrollBars =

Public Enum ScrollBars

Ereditarietà: Object

ValueType

Enum
ScrollBars

Campi

Both	3	Vengono visualizzate entrambe le barre di scorrimento orizzontali e verticali.
Horizontal	1	Vengono visualizzate sole le barre di scorrimento orizzontali.
None	0	Non viene visualizzata nessuna barra di scorrimento.
Vertical	2	Vengono visualizzate solo le barre di scorrimento verticali.

Esempio

Nell'esempio di codice seguente viene illustrato come usare l'enumerazione ScrollBars . Per eseguire l'esempio, incollare il codice seguente in un modulo. Chiamare il SetFourDifferentScrollBars metodo nel costruttore del modulo o Load nel metodo di gestione degli eventi.

   // 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

Commenti

Questa enumerazione viene utilizzata da TextBox.ScrollBars.

Non tutti i controlli supportano le barre di scorrimento. Utilizzare questa enumerazione per specificare le barre di scorrimento visibili in un controllo, in alcune o in tutte le circostanze.

Si applica a

Vedi anche

TextBox

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