GroupBoxRenderer GroupBoxRenderer GroupBoxRenderer GroupBoxRenderer Class

定义

提供用于呈现具有或没有视觉样式的分组框控件的方法。Provides methods used to render a group box control with or without visual styles. 此类不能被继承。This class cannot be inherited.

public ref class GroupBoxRenderer sealed
public sealed class GroupBoxRenderer
type GroupBoxRenderer = class
Public NotInheritable Class GroupBoxRenderer
继承
GroupBoxRendererGroupBoxRendererGroupBoxRendererGroupBoxRenderer

示例

下面的代码示例演示如何创建一个自定义控件, 该控件DrawGroupBox使用方法在启用了视觉样式的情况下使用双边框绘制组框。The following code example demonstrates how to create a custom control that uses the DrawGroupBox method to draw a group box with a double border if visual styles are enabled.

#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 GroupBoxRendererSample
{
    public ref class CustomGroupBox : public Control
    {
    private:
        Rectangle innerRectangle;
    private:
        GroupBoxState state;
    private:
        FlowLayoutPanel^ panel;

    public:
        CustomGroupBox() : Control()
        {
            innerRectangle = Rectangle();
            state = GroupBoxState::Normal;
            panel = gcnew FlowLayoutPanel();

            this->Size = System::Drawing::Size(200, 200);
            this->Location = Point(10, 10);
            this->Controls->Add(panel);
            this->Text = "CustomGroupBox";
            this->Font = SystemFonts::IconTitleFont;

            innerRectangle.X = ClientRectangle.X + 5;
            innerRectangle.Y = ClientRectangle.Y + 15;
            innerRectangle.Width = ClientRectangle.Width - 10;
            innerRectangle.Height = ClientRectangle.Height - 20;

            panel->FlowDirection = FlowDirection::TopDown;
            panel->Location = Point(innerRectangle.X + 5,
                innerRectangle.Y + 5);
            panel->Size = System::Drawing::Size(innerRectangle.Width - 10,
                innerRectangle.Height - 10);
        }

        // Draw the group box in the current state.
    protected:
        virtual void OnPaint(PaintEventArgs^ e) override 
        {
            __super::OnPaint(e);

            GroupBoxRenderer::DrawGroupBox(e->Graphics, ClientRectangle,
                this->Text, this->Font, state);

            // Draw an additional inner border if visual styles are enabled.
            if (Application::RenderWithVisualStyles)
            {
                GroupBoxRenderer::DrawGroupBox(e->Graphics, innerRectangle,
                    state);
            }
        }

        // Pass added controls to the internal FlowLayoutPanel.
    protected:
        virtual void OnControlAdded(ControlEventArgs^ e) override
        {
            __super::OnControlAdded(e);

            // Ensure that you do not add the panel itself.
            if (e->Control != this->panel)
            {
                this->Controls->Remove(e->Control);
                panel->Controls->Add(e->Control);
            }
        }
    };

    ref class Form1 : public Form
    {
    public:
        Form1() : Form()
        {
            CustomGroupBox^ groupBox1 = gcnew CustomGroupBox();
            groupBox1->Text = "Radio Button Display";
            Controls->Add(groupBox1);

            // Add some radio buttons to test the CustomGroupBox.
            int count = 8;
            array<RadioButton^>^ buttonArray = 
                gcnew array<RadioButton^>(count);
            for (int i = 0; i < count; i++)
            {
                buttonArray[i] = gcnew RadioButton();
                buttonArray[i]->Text = "Button " + (i + 1).ToString();
                groupBox1->Controls->Add(buttonArray[i]);
            }

            if (Application::RenderWithVisualStyles)
            {
                this->Text = "Visual Styles Enabled";
            }
            else
            {
                this->Text = "Visual Styles Disabled";
            }
        }
    };
}

[STAThread]
int main()
{
    // If you do not call EnableVisualStyles below, then
    // GroupBoxRenderer automatically detects this and draws
    // the group box without visual styles.
    Application::EnableVisualStyles();
    Application::Run(gcnew GroupBoxRendererSample::Form1());
}
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Windows.Forms.VisualStyles;

namespace GroupBoxRendererSample
{
    class Form1 : Form
    {
        private Button button1;
    
        public Form1()
            : base()
        {
            CustomGroupBox GroupBox1 = new CustomGroupBox();
            button1 = new Button();
             
            GroupBox1.Text = "Radio Button Display";
            this.button1.Location = new System.Drawing.Point(205, 231);
            this.button1.Size = new System.Drawing.Size(105, 23);
            this.button1.Text = "Toggle Visual Styles";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            Controls.Add(GroupBox1);
            this.Controls.Add(this.button1);

            // Add some radio buttons to test the CustomGroupBox.
            int count = 8;
            RadioButton[] ButtonArray = new RadioButton[count];
            for (int i = 0; i < count; i++)
            {
                ButtonArray[i] = new RadioButton();
                ButtonArray[i].Text = "Button " + (i + 1).ToString();
                GroupBox1.Controls.Add(ButtonArray[i]);
            }

            if (Application.RenderWithVisualStyles)
                this.Text = "Visual Styles Enabled";
            else
                this.Text = "Visual Styles Disabled";
        }

        [STAThread]
        static void Main()
        {
            // If you do not call EnableVisualStyles below, then 
            // GroupBoxRenderer automatically detects this and draws
            // the group box without visual styles.
            Application.EnableVisualStyles();
            Application.Run(new Form1());
        }


	// Match application style and toggle visual styles off
	// and on for the application.
        private void button1_Click(object sender, EventArgs e)
        {
            GroupBoxRenderer.RenderMatchingApplicationState = true;
            Application.VisualStyleState = 
                Application.VisualStyleState ^ 
                VisualStyleState.ClientAndNonClientAreasEnabled;

          
            if (Application.RenderWithVisualStyles)
                this.Text = "Visual Styles Enabled";
            else
                this.Text = "Visual Styles Disabled";
        }
    }

    public class CustomGroupBox : Control
    {
        private Rectangle innerRectangle = new Rectangle();
        private GroupBoxState state = GroupBoxState.Normal;
        private FlowLayoutPanel panel = new FlowLayoutPanel();

        public CustomGroupBox()
            : base()
        {
            this.Size = new Size(200, 200);
            this.Location = new Point(10, 10);
            this.Controls.Add(panel);
            this.Text = "CustomGroupBox";
            this.Font = SystemFonts.IconTitleFont;

            innerRectangle.X = ClientRectangle.X + 5;
            innerRectangle.Y = ClientRectangle.Y + 15;
            innerRectangle.Width = ClientRectangle.Width - 10;
            innerRectangle.Height = ClientRectangle.Height - 20;

            panel.FlowDirection = FlowDirection.TopDown;
            panel.Location = new Point(innerRectangle.X + 5,
                innerRectangle.Y + 5);
            panel.Size = new Size(innerRectangle.Width - 10,
                innerRectangle.Height - 10);
        }

        // Draw the group box in the current state.
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            GroupBoxRenderer.DrawGroupBox(e.Graphics, ClientRectangle,
                this.Text, this.Font, state);

            // Draw an additional inner border if visual styles are enabled.
            if (Application.RenderWithVisualStyles)
            {
                GroupBoxRenderer.DrawGroupBox(e.Graphics, innerRectangle, state);
            }
        }

        // Pass added controls to the internal FlowLayoutPanel.
        protected override void OnControlAdded(ControlEventArgs e)
        {
            base.OnControlAdded(e);

            // Ensure that you do not add the panel itself.
            if (e.Control != this.panel)
            {
                this.Controls.Remove(e.Control);
                panel.Controls.Add(e.Control);
            }
        }
    }
}
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Windows.Forms.VisualStyles



Class Form1
    Inherits Form
    Private WithEvents button1 As Button
    
    
    Public Sub New() 
        Dim GroupBox1 As New CustomGroupBox()
        button1 = New Button()
        
        GroupBox1.Text = "Radio Button Display"
        Me.button1.Location = New System.Drawing.Point(185, 231)
        Me.button1.Size = New System.Drawing.Size(105, 23)
        Me.button1.Text = "Toggle Visual Styles"

        Controls.Add(GroupBox1)
        Me.Controls.Add(Me.button1)
        
        ' Add some radio buttons to test the CustomGroupBox.
        Dim count As Integer = 8
        Dim ButtonArray(count) As RadioButton
        For i = 0 To count - 1
            ButtonArray(i) = New RadioButton()
            ButtonArray(i).Text = "Button " +(i + 1).ToString()
            GroupBox1.Controls.Add(ButtonArray(i))
        Next
        
        If Application.RenderWithVisualStyles Then
            Me.Text = "Visual Styles Enabled"
        Else
            Me.Text = "Visual Styles Disabled"
        End If
    
    End Sub 'New
     
    <STAThread()>  _
    Shared Sub Main() 
        ' If you do not call EnableVisualStyles below, then 
        ' GroupBoxRenderer automatically detects this and draws
        ' the group box without visual styles.
        Application.EnableVisualStyles()
        Application.Run(New Form1())
    
    End Sub 'Main
    
    
    ' Match application style and toggle visual styles off
    ' and on for the application.
    Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs) _
        Handles button1.Click

        GroupBoxRenderer.RenderMatchingApplicationState = True

        Application.VisualStyleState = _
            Application.VisualStyleState Xor _
            VisualStyleState.ClientAndNonClientAreasEnabled

        If Application.RenderWithVisualStyles Then
            Me.Text = "Visual Styles Enabled"
        Else
            Me.Text = "Visual Styles Disabled"
        End If

    End Sub
End Class


Public Class CustomGroupBox
    Inherits Control
    Private innerRectangle As New Rectangle()
    Private state As GroupBoxState = GroupBoxState.Normal
    Private panel As New FlowLayoutPanel()
    
    
    Public Sub New() 
        Me.Size = New Size(200, 200)
        Me.Location = New Point(10, 10)
        Me.Controls.Add(panel)
        Me.Text = "CustomGroupBox"
        Me.Font = SystemFonts.IconTitleFont
        
        innerRectangle.X = ClientRectangle.X + 5
        innerRectangle.Y = ClientRectangle.Y + 15
        innerRectangle.Width = ClientRectangle.Width - 10
        innerRectangle.Height = ClientRectangle.Height - 20
        
        panel.FlowDirection = FlowDirection.TopDown
        panel.Location = New Point(innerRectangle.X + 5, innerRectangle.Y + 5)
        panel.Size = New Size(innerRectangle.Width - 10, innerRectangle.Height - 10)
    
    End Sub 'New
    
    
    ' Draw the group box in the current state.
    Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs) 
        MyBase.OnPaint(e)
        
        GroupBoxRenderer.DrawGroupBox(e.Graphics, ClientRectangle, Me.Text, Me.Font, state)
        
        ' Draw an additional inner border if visual styles are enabled.
        If Application.RenderWithVisualStyles Then
            GroupBoxRenderer.DrawGroupBox(e.Graphics, innerRectangle, state)
        End If
    
    End Sub 'OnPaint
    
    ' Pass added controls to the internal FlowLayoutPanel.
    Protected Overrides Sub OnControlAdded(ByVal e As ControlEventArgs) 
        MyBase.OnControlAdded(e)
        
        ' Ensure that you do not add the panel itself.
        If e.Control IsNot Me.panel Then
            Me.Controls.Remove(e.Control)
            panel.Controls.Add(e.Control)
        End If
    
    End Sub 'OnControlAdded
End Class 'CustomGroupBox

注解

类提供一static组可用于呈现分组框控件的方法。 GroupBoxRendererThe GroupBoxRenderer class provides a set of static methods that can be used to render a group box control. 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. 若要绘制分组框, 请使用其中一DrawGroupBox种方法。To draw a group box, use one of the DrawGroupBox methods. 这些方法提供了各种文本绘图选项。These methods provide a variety of text drawing options.

如果在操作系统中启用了视觉样式, 并将视觉样式应用于当前应用程序, DrawGroupBox将用当前视觉样式绘制组框。If visual styles are enabled in the operating system and visual styles are applied to the current application, DrawGroupBox will draw the group box with the current visual style. 否则, DrawGroupBox将用经典 Windows 样式绘制组框。Otherwise, DrawGroupBox will draw the group box with the classic Windows style. 如果要绘制的自定义控件应自动匹配操作系统的当前视觉样式设置, 这将很有用。This is useful if you are drawing a custom control that should automatically match the current visual style setting of the operating system.

此类包装设置为System.Windows.Forms.VisualStyles.VisualStyleRenderer System.Windows.Forms.VisualStyles.VisualStyleElement.Button.GroupBox类公开的元素之一的的功能。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.Button.GroupBox class. 有关详细信息,请参阅使用视觉样式呈现控件For more information, see Rendering Controls with Visual Styles.

属性

RenderMatchingApplicationState RenderMatchingApplicationState RenderMatchingApplicationState RenderMatchingApplicationState

获取或设置一个值,该值指示呈现器是否使用应用程序状态来确定呈现样式。Gets or sets a value indicating whether the renderer uses the application state to determine rendering style.

方法

DrawGroupBox(Graphics, Rectangle, GroupBoxState) DrawGroupBox(Graphics, Rectangle, GroupBoxState) DrawGroupBox(Graphics, Rectangle, GroupBoxState) DrawGroupBox(Graphics, Rectangle, GroupBoxState)

绘制具有指定状态和边界的分组框控件。Draws a group box control in the specified state and bounds.

DrawGroupBox(Graphics, Rectangle, String, Font, Color, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, Color, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, Color, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, Color, GroupBoxState)

绘制具有指定的状态和边界以及指定的文本、字体和颜色的分组框控件。Draws a group box control in the specified state and bounds, with the specified text, font, and color.

DrawGroupBox(Graphics, Rectangle, String, Font, Color, TextFormatFlags, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, Color, TextFormatFlags, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, Color, TextFormatFlags, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, Color, TextFormatFlags, GroupBoxState)

绘制具有指定的状态和边界以及指定的文本、字体、颜色和文本格式的分组框控件。Draws a group box control in the specified state and bounds, with the specified text, font, color, and text formatting.

DrawGroupBox(Graphics, Rectangle, String, Font, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, GroupBoxState)

绘制具有指定的状态和边界以及指定的文本和字体的分组框控件。Draws a group box control in the specified state and bounds, with the specified text and font.

DrawGroupBox(Graphics, Rectangle, String, Font, TextFormatFlags, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, TextFormatFlags, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, TextFormatFlags, GroupBoxState) DrawGroupBox(Graphics, Rectangle, String, Font, TextFormatFlags, GroupBoxState)

绘制具有指定的状态和边界以及指定的文本、字体和文本格式的分组框控件。Draws a group box control in the specified state and bounds, with the specified text, font, and text formatting.

DrawParentBackground(Graphics, Rectangle, Control) DrawParentBackground(Graphics, Rectangle, Control) DrawParentBackground(Graphics, Rectangle, Control) DrawParentBackground(Graphics, Rectangle, Control)

在指定区域中绘制控件的父级的背景。Draws the background of a control's parent in the specified area.

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)
IsBackgroundPartiallyTransparent(GroupBoxState) IsBackgroundPartiallyTransparent(GroupBoxState) IsBackgroundPartiallyTransparent(GroupBoxState) IsBackgroundPartiallyTransparent(GroupBoxState)

指示分组框的背景是否包含半透明或混合了 alpha 的块。Indicates whether the background of the group box has any semitransparent or alpha-blended pieces.

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