TabControl.DrawMode Properti

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Mendapatkan atau mengatur cara tab kontrol digambar.

public:
 property System::Windows::Forms::TabDrawMode DrawMode { System::Windows::Forms::TabDrawMode get(); void set(System::Windows::Forms::TabDrawMode value); };

public System.Windows.Forms.TabDrawMode DrawMode { get; set; }

member this.DrawMode : System.Windows.Forms.TabDrawMode with get, set

Public Property DrawMode As TabDrawMode

Nilai Properti

TabDrawMode

Salah TabDrawMode satu nilai. Default adalah Normal.

Pengecualian

InvalidEnumArgumentException

Nilai properti bukan nilai yang valid TabDrawMode .

Contoh

Contoh kode berikut membuat TabControl dengan satu TabPage. Contoh ini mengatur DrawMode properti ke OwnerDrawFixed, yang menentukan bahwa tab digambar oleh objek Form1induk . Nilai OwnerDrawFixed ini juga memungkinkan akses ke DrawItem peristiwa, yang, dalam contoh ini, digunakan untuk menggambar myTabRect pada tabPage1 tab.

System.Drawing Gunakan namespace layanan dan System.Windows.Forms dengan contoh ini.

using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public Form
{
private:
   TabControl^ tabControl1;
   Rectangle myTabRect;

public:
   Form1()
   {
      tabControl1 = gcnew TabControl;
      TabPage^ tabPage1 = gcnew TabPage;
      
      // Sets the tabs to be drawn by the parent window Form1.
      // OwnerDrawFixed allows access to DrawItem.
      tabControl1->DrawMode = TabDrawMode::OwnerDrawFixed;
      tabControl1->Controls->Add( tabPage1 );
      tabControl1->Location = Point(25,25);
      tabControl1->Size = System::Drawing::Size( 250, 250 );
      tabPage1->TabIndex = 0;
      myTabRect = tabControl1->GetTabRect( 0 );
      ClientSize = System::Drawing::Size( 300, 300 );
      Controls->Add( tabControl1 );
      tabControl1->DrawItem += gcnew DrawItemEventHandler( this, &Form1::OnDrawItem );
   }


private:
   void OnDrawItem( Object^ /*sender*/, DrawItemEventArgs^ e )
   {
      Graphics^ g = e->Graphics;
      Pen^ p = gcnew Pen( Color::Blue );
      g->DrawRectangle( p, myTabRect );
   }

};

int main()
{
   Application::Run( gcnew Form1 );
}

using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    private TabControl tabControl1;
    private Rectangle myTabRect;

    public Form1()
    {
        tabControl1 = new TabControl();
        TabPage tabPage1 = new TabPage();

        // Sets the tabs to be drawn by the parent window Form1.
        // OwnerDrawFixed allows access to DrawItem. 
        tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed;

        tabControl1.Controls.Add(tabPage1);
        tabControl1.Location = new Point(25, 25);
        tabControl1.Size = new Size(250, 250);

        tabPage1.TabIndex = 0;

        myTabRect = tabControl1.GetTabRect(0);

        ClientSize = new Size(300, 300);
        Controls.Add(tabControl1);

        tabControl1.DrawItem += new DrawItemEventHandler(OnDrawItem);
    }
 
    private void OnDrawItem(object sender, DrawItemEventArgs e)
    {
        Graphics g = e.Graphics;
        Pen p = new Pen(Color.Blue);
        g.DrawRectangle(p, myTabRect);
    }

    static void Main() 
    {
        Application.Run(new Form1());
    }
}

Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
    Inherits Form
    Private tabControl1 As TabControl
    Private myTabRect As Rectangle

    Public Sub New()
        tabControl1 = New TabControl()
        Dim tabPage1 As New TabPage()

        ' Sets the tabs to be drawn by the parent window Form1.
        ' OwnerDrawFixed allows access to DrawItem. 
        tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed

        tabControl1.Controls.Add(tabPage1)
        tabControl1.Location = New Point(25, 25)
        tabControl1.Size = New Size(250, 250)

        tabPage1.TabIndex = 0

        myTabRect = tabControl1.GetTabRect(0)

        ClientSize = New Size(300, 300)
        Controls.Add(tabControl1)

        AddHandler tabControl1.DrawItem, AddressOf OnDrawItem
    End Sub

    Private Sub OnDrawItem(ByVal sender As Object, ByVal e As DrawItemEventArgs)
        Dim g As Graphics = e.Graphics
        Dim p As New Pen(Color.Blue)
        g.DrawRectangle(p, myTabRect)
    End Sub

    Shared Sub Main()
        Application.Run(New Form1())
    End Sub
End Class

Keterangan

Ketika Anda mengatur DrawMode properti ke OwnerDrawFixed, TabControl meningkatkan DrawItem peristiwa setiap kali perlu melukis salah satu tabnya. Untuk menyesuaikan tampilan tab, berikan kode lukisan Anda sendiri di handler untuk acara tersebut DrawItem .

TabControl tidak mendukung ukuran tab variabel dengan gambar pemilik.

Lihat juga

• TabDrawMode
• DrawItem