TabRenderer TabRenderer TabRenderer TabRenderer Class

定义

提供用于呈现具有视觉样式的选项卡控件的方法。Provides methods used to render a tab control with visual styles. 此类不能被继承。This class cannot be inherited.

public ref class TabRenderer sealed
public sealed class TabRenderer
type TabRenderer = class
Public NotInheritable Class TabRenderer
继承
TabRendererTabRendererTabRendererTabRenderer

示例

下面的代码示例演示如何创建使用的自定义控件DrawTabPageDrawTabItem绘制具有两个选项卡的基本选项卡控件的方法。The following code example demonstrates how to create a custom control that uses the DrawTabPage and DrawTabItem methods to draw a basic tab control with two tabs.

#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>
#using <System.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::VisualStyles;

namespace TabRendererSample
{
    public ref class CustomTabControl : public Control
    {
    private:
        Rectangle tabPageRectangle;
        Rectangle tabItemRectangle1;
        Rectangle tabItemRectangle2;
        int tabHeight;
        int tabWidth;
        TabItemState tab1State;
        TabItemState tab2State;
        String^ tab1Text;
        String^ tab2Text;
        bool tab1Focused;
        bool tab2Focused;

    public:
        CustomTabControl()
        {
            this->tabHeight = 30;
            this->tabWidth = 100;
            this->tab1State = TabItemState::Selected;
            this->tab2State = TabItemState::Normal;
            this->tab1Text = "Tab 1";
            this->tab2Text = "Tab 2";
            this->tab1Focused = true;
            this->tab2Focused = false;
            this->Size = System::Drawing::Size(300, 300);
            this->Location = Point(10, 10);
            this->Font = SystemFonts::IconTitleFont;
            this->Text = "TabRenderer";
            this->DoubleBuffered = true;

            tabPageRectangle = Rectangle(ClientRectangle.X,
                ClientRectangle.Y + tabHeight,
                ClientRectangle.Width,
                ClientRectangle.Height - tabHeight);

            // Extend the first tab rectangle down by 2 pixels, 
            // because it is selected by default.
            tabItemRectangle1 = Rectangle(ClientRectangle.X,
                ClientRectangle.Y, tabWidth, tabHeight + 2);

            tabItemRectangle2 = Rectangle(ClientRectangle.Location.X +
                tabWidth, ClientRectangle.Location.Y, tabWidth, tabHeight);
        }

        // Draw the tab page and the tab items.
    protected:
        virtual void OnPaint(PaintEventArgs^ e) override
        {
            __super::OnPaint(e);

            if (!TabRenderer::IsSupported)
            {
                this->Parent->Text = "CustomTabControl Disabled";
                return;
            }

            TabRenderer::DrawTabPage(e->Graphics, tabPageRectangle);
            TabRenderer::DrawTabItem(e->Graphics, tabItemRectangle1,
                tab1Text, this->Font, tab1Focused, tab1State);
            TabRenderer::DrawTabItem(e->Graphics, tabItemRectangle2,
                tab2Text, this->Font, tab2Focused, tab2State);

            this->Parent->Text = "CustomTabControl Enabled";
        }

        // Draw the selected tab item.
    protected:
        virtual void OnMouseDown(MouseEventArgs^ e) override
        {
            __super::OnMouseDown(e);

            if (!TabRenderer::IsSupported)
            {
                return;
            }

            // The first tab is clicked. Note that the height of the 
            // selected tab rectangle is raised by 2, so that it draws 
            // over the border of the tab page.
            if (tabItemRectangle1.Contains(e->Location))
            {
                tab1State = TabItemState::Selected;
                tab2State = TabItemState::Normal;
                tabItemRectangle1.Height += 2;
                tabItemRectangle2.Height -= 2;
                tab1Focused = true;
                tab2Focused = false;
            }

            // The second tab is clicked.
            if (tabItemRectangle2.Contains(e->Location))
            {
                tab2State = TabItemState::Selected;
                tab1State = TabItemState::Normal;
                tabItemRectangle2.Height += 2;
                tabItemRectangle1.Height -= 2;
                tab2Focused = true;
                tab1Focused = false;
            }

            Invalidate();
        }
    };
    public ref class Form1 : public Form
    {
    public:
        Form1()

        {
            CustomTabControl^ Tab1 = gcnew CustomTabControl();
            Controls->Add(Tab1);
            this->Size = System::Drawing::Size(500, 500);
        }

    };
}

[STAThread]
int main()
{
    // The call to EnableVisualStyles below does not affect whether 
    // TabRenderer.IsSupported is true; as long as visual styles 
    // are enabled by the operating system, IsSupported is true.
    Application::EnableVisualStyles();
    Application::Run(gcnew TabRendererSample::Form1());
}

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

namespace TabRendererSample
{
    class Form1 : Form
    {
        public Form1()
            : base()
        {
            CustomTabControl Tab1 = new CustomTabControl();
            Controls.Add(Tab1);
            this.Size = new Size(500, 500);
        }

        [STAThread]
        static void Main()
        {
            // The call to EnableVisualStyles below does not affect whether 
            // TabRenderer.IsSupported is true; as long as visual styles 
            // are enabled by the operating system, IsSupported is true.
            Application.EnableVisualStyles();
            Application.Run(new Form1());
        }
    }

    public class CustomTabControl : Control
    {
        private Rectangle tabPageRectangle;
        private Rectangle tabItemRectangle1;
        private Rectangle tabItemRectangle2;
        private int tabHeight = 30;
        private int tabWidth = 100;
        private TabItemState tab1State = TabItemState.Selected;
        private TabItemState tab2State = TabItemState.Normal;
        private string tab1Text = "Tab 1";
        private string tab2Text = "Tab 2";
        private bool tab1Focused = true;
        private bool tab2Focused = false;

        public CustomTabControl()
            : base()
        {
            this.Size = new Size(300, 300);
            this.Location = new Point(10, 10);
            this.Font = SystemFonts.IconTitleFont;
            this.Text = "TabRenderer";
            this.DoubleBuffered = true;

            tabPageRectangle = new Rectangle(ClientRectangle.X,
                ClientRectangle.Y + tabHeight,
                ClientRectangle.Width,
                ClientRectangle.Height - tabHeight);

            // Extend the first tab rectangle down by 2 pixels, 
            // because it is selected by default.
            tabItemRectangle1 = new Rectangle(ClientRectangle.X,
                ClientRectangle.Y, tabWidth, tabHeight + 2);

            tabItemRectangle2 = new Rectangle(ClientRectangle.Location.X +
                tabWidth, ClientRectangle.Location.Y, tabWidth, tabHeight);
        }

        // Draw the tab page and the tab items.
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            if (!TabRenderer.IsSupported)
            {
                this.Parent.Text = "CustomTabControl Disabled";
                return;
            }

            TabRenderer.DrawTabPage(e.Graphics, tabPageRectangle);
            TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle1,
                tab1Text, this.Font, tab1Focused, tab1State);
            TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle2,
                tab2Text, this.Font, tab2Focused, tab2State);

            this.Parent.Text = "CustomTabControl Enabled";
        }

        // Draw the selected tab item.
        protected override void OnMouseDown(MouseEventArgs e)
        {
            base.OnMouseDown(e);

            if (!TabRenderer.IsSupported)
                return;

            // The first tab is clicked. Note that the height of the 
            // selected tab rectangle is raised by 2, so that it draws 
            // over the border of the tab page.
            if (tabItemRectangle1.Contains(e.Location))
            {
                tab1State = TabItemState.Selected;
                tab2State = TabItemState.Normal;
                tabItemRectangle1.Height += 2;
                tabItemRectangle2.Height -= 2;
                tab1Focused = true;
                tab2Focused = false;
            }

            // The second tab is clicked.
            if (tabItemRectangle2.Contains(e.Location))
            {
                tab2State = TabItemState.Selected;
                tab1State = TabItemState.Normal;
                tabItemRectangle2.Height += 2;
                tabItemRectangle1.Height -= 2;
                tab2Focused = true;
                tab1Focused = false;
            }

            Invalidate();
        }
    }
}
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Windows.Forms.VisualStyles

Namespace TabRendererSample

    Class Form1
        Inherits Form

        Public Sub New()
            Dim Tab1 As New CustomTabControl()
            Controls.Add(Tab1)
            Me.Size = New Size(500, 500)
        End Sub

        <STAThread()> _
        Shared Sub Main()
            ' The call to EnableVisualStyles below does not affect whether 
            ' TabRenderer.IsSupported is true; as long as visual styles 
            ' are enabled by the operating system, IsSupported is true.
            Application.EnableVisualStyles()
            Application.Run(New Form1())
        End Sub
    End Class

    Public Class CustomTabControl
        Inherits Control

        Private tabPageRectangle As Rectangle
        Private tabItemRectangle1 As Rectangle
        Private tabItemRectangle2 As Rectangle
        Private tabHeight As Integer = 30
        Private tabWidth As Integer = 100
        Private tab1State As TabItemState = TabItemState.Selected
        Private tab2State As TabItemState = TabItemState.Normal
        Private tab1Text As String = "Tab 1"
        Private tab2Text As String = "Tab 2"
        Private tab1Focused As Boolean = True
        Private tab2Focused As Boolean = False

        Public Sub New()
            With Me
                .Size = New Size(300, 300)
                .Location = New Point(10, 10)
                .Font = SystemFonts.IconTitleFont
                .Text = "TabRenderer"
                .DoubleBuffered = True
            End With

            tabPageRectangle = New Rectangle(ClientRectangle.X, _
                ClientRectangle.Y + tabHeight, _
                ClientRectangle.Width, _
                ClientRectangle.Height - tabHeight)

            ' Extend the first tab rectangle down by 2 pixels, because
            ' it is selected by default.
            tabItemRectangle1 = New Rectangle(ClientRectangle.X, _
                ClientRectangle.Y, tabWidth, tabHeight + 2)

            tabItemRectangle2 = New Rectangle(ClientRectangle.Location.X + _
                tabWidth, ClientRectangle.Location.Y, tabWidth, tabHeight)
        End Sub

        ' Draw the tab page and the tab items.
        Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
            MyBase.OnPaint(e)

            If Not TabRenderer.IsSupported Then
                Me.Parent.Text = "CustomTabControl Disabled"
                Return
            End If

            TabRenderer.DrawTabPage(e.Graphics, tabPageRectangle)
            TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle1, _
                tab1Text, Me.Font, tab1Focused, tab1State)
            TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle2, _
                tab2Text, Me.Font, tab2Focused, tab2State)
            Me.Parent.Text = "CustomTabControl Enabled"
        End Sub

        ' Draw the selected tab item.
        Protected Overrides Sub OnMouseDown(ByVal e As MouseEventArgs)
            MyBase.OnMouseDown(e)

            If Not TabRenderer.IsSupported Then
                Return
            End If

            ' The first tab is clicked. Note that the height of the 
            ' selected tab rectangle is raised by 2, so that it draws 
            ' over the border of the tab page.
            If tabItemRectangle1.Contains(e.Location) Then
                tab1State = TabItemState.Selected
                tab2State = TabItemState.Normal
                tabItemRectangle1.Height += 2
                tabItemRectangle2.Height -= 2
                tab1Focused = True
                tab2Focused = False
            End If

            ' The second tab is clicked.
            If tabItemRectangle2.Contains(e.Location) Then
                tab2State = TabItemState.Selected
                tab1State = TabItemState.Normal
                tabItemRectangle2.Height += 2
                tabItemRectangle1.Height -= 2
                tab2Focused = True
                tab1Focused = False
            End If

            Invalidate()
        End Sub

    End Class
End Namespace

注解

TabRenderer类提供了一套static可用于呈现具有的操作系统当前视觉样式的选项卡控件的方法。The TabRenderer class provides a set of static methods that can be used to render a tab control with the current visual style of the operating system. 呈现控件是指绘制控件的用户界面。Rendering a control refers to drawing the user interface of a control. 这是很有用,如果您正在绘制的自定义控件应具有的当前视觉样式外观。This is useful if you are drawing a custom control that should have the appearance of the current visual style. 若要绘制选项卡控件,请使用DrawTabPage方法来绘制页上,使用DrawTabItem方法,以便绘制每个选项卡。To draw a tab control, use the DrawTabPage method to draw the page, and use the DrawTabItem method to draw each tab.

如果视觉样式应用于 windows 的应用程序的工作区在操作系统中启用了可视样式,此类方法将绘制具有当前视觉样式的选项卡控件。If visual styles are enabled in the operating system and visual styles are applied to the client area of application windows, the methods of this class will draw the tab control with the current visual style. 否则的方法和属性的此类将引发InvalidOperationExceptionOtherwise, the methods and properties of this class will throw an InvalidOperationException. 若要确定是否可以使用此类的成员,请检查的值IsSupported属性。To determine whether the members of this class can be used, check the value of the IsSupported property.

此类将包装的功能System.Windows.Forms.VisualStyles.VisualStyleRenderer设置为公开的元素之一System.Windows.Forms.VisualStyles.VisualStyleElement.Tab类。This class wraps the functionality of a System.Windows.Forms.VisualStyles.VisualStyleRenderer that is set to one of the elements exposed by the System.Windows.Forms.VisualStyles.VisualStyleElement.Tab class. 有关详细信息,请参阅以视觉样式呈现控件For more information, see Rendering Controls with Visual Styles.

属性

IsSupported IsSupported IsSupported IsSupported

获取一个值,该值指示 TabRenderer 类能否用于绘制具有视觉样式的选项卡控件。Gets a value indicating whether the TabRenderer class can be used to draw a tab control with visual styles.

方法

DrawTabItem(Graphics, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, Boolean, TabItemState)

绘制具有指定的状态和边界以及可选聚焦框的选项卡。Draws a tab in the specified state and bounds, and with an optional focus rectangle.

DrawTabItem(Graphics, Rectangle, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, Image, Rectangle, Boolean, TabItemState)

绘制具有指定的状态和边界、指定的图像以及可选聚焦框的选项卡。Draws a tab in the specified state and bounds, with the specified image, and with an optional focus rectangle.

DrawTabItem(Graphics, Rectangle, String, Font, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, Boolean, TabItemState)

绘制具有指定的状态和边界、指定的文本以及可选聚焦框的选项卡。Draws a tab in the specified state and bounds, with the specified text, and with an optional focus rectangle.

DrawTabItem(Graphics, Rectangle, String, Font, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, Image, Rectangle, Boolean, TabItemState)

绘制具有指定的状态和边界、指定的文本和图像以及可选聚焦框的选项卡。Draws a tab in the specified state and bounds, with the specified text and image, and with an optional focus rectangle.

DrawTabItem(Graphics, Rectangle, String, Font, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TabItemState)

绘制具有指定的状态和边界以及指定的文本的选项卡。Draws a tab in the specified state and bounds, and with the specified text.

DrawTabItem(Graphics, Rectangle, String, Font, TextFormatFlags, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TextFormatFlags, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TextFormatFlags, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TextFormatFlags, Boolean, TabItemState)

绘制具有指定的状态和边界、指定的文本和文本格式以及可选聚焦框的选项卡。Draws a tab in the specified state and bounds, with the specified text and text formatting, and with an optional focus rectangle.

DrawTabItem(Graphics, Rectangle, String, Font, TextFormatFlags, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TextFormatFlags, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TextFormatFlags, Image, Rectangle, Boolean, TabItemState) DrawTabItem(Graphics, Rectangle, String, Font, TextFormatFlags, Image, Rectangle, Boolean, TabItemState)

绘制具有指定的状态和边界、指定的文本、文本格式和图像以及可选聚焦框的选项卡。Draws a tab in the specified state and bounds; with the specified text, text formatting, and image; and with an optional focus rectangle.

DrawTabItem(Graphics, Rectangle, TabItemState) DrawTabItem(Graphics, Rectangle, TabItemState) DrawTabItem(Graphics, Rectangle, TabItemState) DrawTabItem(Graphics, Rectangle, TabItemState)

绘制具有指定状态和边界的选项卡。Draws a tab in the specified state and bounds.

DrawTabPage(Graphics, Rectangle) DrawTabPage(Graphics, Rectangle) DrawTabPage(Graphics, Rectangle) DrawTabPage(Graphics, Rectangle)

绘制具有指定边界的选项卡页。Draws a tab page in the specified bounds.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

获取当前实例的 TypeGets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)

适用于

另请参阅