LayoutEngine LayoutEngine LayoutEngine LayoutEngine Class

정의

레이아웃 엔진을 구현하기 위한 기본 클래스를 제공합니다.Provides the base class for implementing layout engines.

public ref class LayoutEngine abstract
public abstract class LayoutEngine
type LayoutEngine = class
Public MustInherit Class LayoutEngine
상속
LayoutEngineLayoutEngineLayoutEngineLayoutEngine

예제

다음 코드 예제에서는 LayoutEngine 사용자 지정 레이아웃 동작을 구현 하는 클래스입니다.The following code example demonstrates the use of the LayoutEngine class to implement custom layout behavior.

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

using namespace System;
using namespace System::Collections::Generic;
using namespace System::Drawing;
using namespace System::Text;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Layout;

// This class demonstrates a simple custom layout engine.
public ref class DemoFlowLayout : public LayoutEngine
{
public:
    virtual bool Layout(Object^ container,
		LayoutEventArgs^ layoutEventArgs) override
    {
        Control^ parent = nullptr;
        try
        {
            parent = (Control ^) container;
        }
        catch (InvalidCastException^ ex)
        {
            throw gcnew ArgumentException(
                "The parameter 'container' must be a control", "container", ex);
        }
        // Use DisplayRectangle so that parent.Padding is honored.
        Rectangle parentDisplayRectangle = parent->DisplayRectangle;
        Point nextControlLocation = parentDisplayRectangle.Location;

        for each (Control^ currentControl in parent->Controls)
        {
            // Only apply layout to visible controls.
            if (!currentControl->Visible)
            {
                continue;
            }

            // Respect the margin of the control:
            // shift over the left and the top.
            nextControlLocation.Offset(currentControl->Margin.Left,
                currentControl->Margin.Top);

            // Set the location of the control.
            currentControl->Location = nextControlLocation;

            // Set the autosized controls to their
            // autosized heights.
            if (currentControl->AutoSize)
            {
                currentControl->Size = currentControl->GetPreferredSize(
                    parentDisplayRectangle.Size);
            }

            // Move X back to the display rectangle origin.
            nextControlLocation.X = parentDisplayRectangle.X;

            // Increment Y by the height of the control
            // and the bottom margin.
            nextControlLocation.Y += currentControl->Height +
                currentControl->Margin.Bottom;
        }

        // Optional: Return whether or not the container's
        // parent should perform layout as a result of this
        // layout. Some layout engines return the value of
        // the container's AutoSize property.

        return false;
    }
};

// This class demonstrates a simple custom layout panel.
// It overrides the LayoutEngine property of the Panel
// control to provide a custom layout engine.
public ref class DemoFlowPanel : public Panel
{
private:
    DemoFlowLayout^ layoutEngine;

public:
    DemoFlowPanel()
    {
        layoutEngine = gcnew DemoFlowLayout();
    }

public:
    virtual property System::Windows::Forms::Layout::LayoutEngine^ LayoutEngine
    {
        System::Windows::Forms::Layout::LayoutEngine^ get() override
        {
            if (layoutEngine == nullptr)
            {
                layoutEngine = gcnew DemoFlowLayout();
            }

            return layoutEngine;
        }
    }
};

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Windows.Forms.Layout;

// This class demonstrates a simple custom layout panel.
// It overrides the LayoutEngine property of the Panel
// control to provide a custom layout engine. 
public class DemoFlowPanel : Panel
{
    private DemoFlowLayout layoutEngine;

    public DemoFlowPanel()
    {
    }

    public override LayoutEngine LayoutEngine
    {
        get
        {
            if (layoutEngine == null)
            {
                layoutEngine = new DemoFlowLayout();
            }

            return layoutEngine;
        }
    }
}

// This class demonstrates a simple custom layout engine.
public class DemoFlowLayout : LayoutEngine
{
    public override bool Layout(
        object container,
        LayoutEventArgs layoutEventArgs)
    {
        Control parent = container as Control;

        // Use DisplayRectangle so that parent.Padding is honored.
        Rectangle parentDisplayRectangle = parent.DisplayRectangle;
        Point nextControlLocation = parentDisplayRectangle.Location;

        foreach (Control c in parent.Controls)
        {
            // Only apply layout to visible controls.
            if (!c.Visible)
            {
                continue;
            }

            // Respect the margin of the control:
            // shift over the left and the top.
            nextControlLocation.Offset(c.Margin.Left, c.Margin.Top);

            // Set the location of the control.
            c.Location = nextControlLocation;

            // Set the autosized controls to their 
            // autosized heights.
            if (c.AutoSize)
            {
                c.Size = c.GetPreferredSize(parentDisplayRectangle.Size);
            }

            // Move X back to the display rectangle origin.
            nextControlLocation.X = parentDisplayRectangle.X;

            // Increment Y by the height of the control 
            // and the bottom margin.
            nextControlLocation.Y += c.Height + c.Margin.Bottom;
        }

        // Optional: Return whether or not the container's 
        // parent should perform layout as a result of this 
        // layout. Some layout engines return the value of 
        // the container's AutoSize property.

        return false;
    }
}
Imports System
Imports System.Collections.Generic
Imports System.Drawing
Imports System.Text
Imports System.Windows.Forms
Imports System.Windows.Forms.Layout

' This class demonstrates a simple custom layout panel.
' It overrides the LayoutEngine property of the Panel
' control to provide a custom layout engine. 
Public Class DemoFlowPanel
    Inherits Panel

    Private layoutEng As DemoFlowLayout

    Public Sub New()
    End Sub

    Public Overrides ReadOnly Property LayoutEngine() As LayoutEngine
        Get
            If layoutEng Is Nothing Then
                layoutEng = New DemoFlowLayout()
            End If

            Return layoutEng
        End Get
    End Property
End Class

' This class demonstrates a simple custom layout engine.
Public Class DemoFlowLayout
   Inherits LayoutEngine

    Public Overrides Function Layout( _
    ByVal container As Object, _
    ByVal layoutEventArgs As LayoutEventArgs) As Boolean

        Dim parent As Control = container

        ' Use DisplayRectangle so that parent.Padding is honored.
        Dim parentDisplayRectangle As Rectangle = parent.DisplayRectangle
        Dim nextControlLocation As Point = parentDisplayRectangle.Location

        Dim c As Control
        For Each c In parent.Controls

            ' Only apply layout to visible controls.
            If c.Visible <> True Then
                Continue For
            End If

            ' Respect the margin of the control:
            ' shift over the left and the top.
            nextControlLocation.Offset(c.Margin.Left, c.Margin.Top)

            ' Set the location of the control.
            c.Location = nextControlLocation

            ' Set the autosized controls to their 
            ' autosized heights.
            If c.AutoSize Then
                c.Size = c.GetPreferredSize(parentDisplayRectangle.Size)
            End If

            ' Move X back to the display rectangle origin.
            nextControlLocation.X = parentDisplayRectangle.X

            ' Increment Y by the height of the control 
            ' and the bottom margin.
            nextControlLocation.Y += c.Height + c.Margin.Bottom
        Next c

        ' Optional: Return whether or not the container's 
        ' parent should perform layout as a result of this 
        ' layout. Some layout engines return the value of 
        ' the container's AutoSize property.
        Return False

    End Function
End Class

설명

사용 된 LayoutEngine 런타임에 사용자 지정 레이아웃 동작을 생성 하려는 클래스입니다.Use the LayoutEngine class when you want to create custom layout behavior at run time. 고유한 클래스를 파생 합니다 LayoutEngine 클래스를 재정의 합니다 Layout 사용자 지정 레이아웃 동작을 정의 하는 방법입니다.Derive your own class from the LayoutEngine class and override the Layout method to define your custom layout behavior.

생성자

LayoutEngine() LayoutEngine() LayoutEngine() LayoutEngine()

LayoutEngine 클래스의 새 인스턴스를 초기화합니다.Initializes a new instance of the LayoutEngine class.

메서드

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

지정한 개체와 현재 개체가 같은지 여부를 확인합니다.Determines whether the specified object is equal to the current object.

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

기본 해시 함수로 작동합니다.Serves as the default hash function.

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

현재 인스턴스의 Type을 가져옵니다.Gets the Type of the current instance.

(Inherited from Object)
InitLayout(Object, BoundsSpecified) InitLayout(Object, BoundsSpecified) InitLayout(Object, BoundsSpecified) InitLayout(Object, BoundsSpecified)

레이아웃 엔진을 초기화합니다.Initializes the layout engine.

Layout(Object, LayoutEventArgs) Layout(Object, LayoutEventArgs) Layout(Object, LayoutEventArgs) Layout(Object, LayoutEventArgs)

레이아웃 엔진에서 레이아웃 작업을 수행하도록 요청합니다.Requests that the layout engine perform a layout operation.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

현재 Object의 단순 복사본을 만듭니다.Creates a shallow copy of the current Object.

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

현재 개체를 나타내는 문자열을 반환합니다.Returns a string that represents the current object.

(Inherited from Object)

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