DrawingContext.PushEffect(BitmapEffect, BitmapEffectInput) 메서드

정의

네임스페이스:

System.Windows.Media

어셈블리:

PresentationCore.dll

주의

BitmapEffects are deprecated and no longer function. Consider using Effects where appropriate instead.

지정한 BitmapEffect을 그리기 컨텍스트에 푸시합니다.

public:
 abstract void PushEffect(System::Windows::Media::Effects::BitmapEffect ^ effect, System::Windows::Media::Effects::BitmapEffectInput ^ effectInput);

public abstract void PushEffect (System.Windows.Media.Effects.BitmapEffect effect, System.Windows.Media.Effects.BitmapEffectInput effectInput);

[System.Obsolete("BitmapEffects are deprecated and no longer function.  Consider using Effects where appropriate instead.")]
public abstract void PushEffect (System.Windows.Media.Effects.BitmapEffect effect, System.Windows.Media.Effects.BitmapEffectInput effectInput);

abstract member PushEffect : System.Windows.Media.Effects.BitmapEffect * System.Windows.Media.Effects.BitmapEffectInput -> unit

[<System.Obsolete("BitmapEffects are deprecated and no longer function.  Consider using Effects where appropriate instead.")>]
abstract member PushEffect : System.Windows.Media.Effects.BitmapEffect * System.Windows.Media.Effects.BitmapEffectInput -> unit

Public MustOverride Sub PushEffect (effect As BitmapEffect, effectInput As BitmapEffectInput)

매개 변수

effect

BitmapEffect

이후 그리기에 적용할 효과입니다.

effectInput

BitmapEffectInput

효과를 적용할 영역이며, 이후 그리기의 전체 영역에 효과를 적용할 경우 null입니다.

특성

ObsoleteAttribute

예제

다음 예제에서는 , PushEffect및 Pop 명령을 보여 PushOpacity줍니다.

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Media.Effects;

namespace SDKSample
{

    public class PushEffectExample : Page
    {

        public PushEffectExample()
        {
            Pen shapeOutlinePen = new Pen(Brushes.Black, 2);
            shapeOutlinePen.Freeze();

            // Create a DrawingGroup
            DrawingGroup dGroup = new DrawingGroup();

            // Obtain a DrawingContext from 
            // the DrawingGroup.
            using (DrawingContext dc = dGroup.Open())
            {
                // Draw a rectangle at full opacity.
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, new Rect(0, 0, 25, 25));

                // Push an opacity change of 0.5. 
                // The opacity of each subsequent drawing will
                // will be multiplied by 0.5.
                dc.PushOpacity(0.5);

                // This rectangle is drawn at 50% opacity.
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, new Rect(25, 25, 25, 25));

                // Blurs subsquent drawings. 
                dc.PushEffect(new BlurBitmapEffect(), null);

                // This rectangle is blurred and drawn at 50% opacity (0.5 x 0.5). 
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, new Rect(50, 50, 25, 25));

                // This rectangle is also blurred and drawn at 50% opacity.
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, new Rect(75, 75, 25, 25));

                // Stop applying the blur to subsquent drawings.
                dc.Pop();

                // This rectangle is drawn at 50% opacity with no blur effect.
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, new Rect(100, 100, 25, 25));
            }

            // Display the drawing using an image control.
            Image theImage = new Image();
            DrawingImage dImageSource = new DrawingImage(dGroup);
            theImage.Source = dImageSource;

            this.Content = theImage;
        }
    }
}

Imports System.Windows.Media.Animation
Imports System.Windows.Media.Effects

Namespace SDKSample


    Public Class PushEffectExample
        Inherits Page

        Public Sub New()
            Dim shapeOutlinePen As New Pen(Brushes.Black, 2)
            shapeOutlinePen.Freeze()

            ' Create a DrawingGroup
            Dim dGroup As New DrawingGroup()

            ' Obtain a DrawingContext from 
            ' the DrawingGroup.
            Using dc As DrawingContext = dGroup.Open()
                ' Draw a rectangle at full opacity.
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, New Rect(0, 0, 25, 25))

                ' Push an opacity change of 0.5. 
                ' The opacity of each subsequent drawing will
                ' will be multiplied by 0.5.
                dc.PushOpacity(0.5)

                ' This rectangle is drawn at 50% opacity.
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, New Rect(25, 25, 25, 25))

                ' Blurs subsquent drawings. 
                dc.PushEffect(New BlurBitmapEffect(), Nothing)

                ' This rectangle is blurred and drawn at 50% opacity (0.5 x 0.5). 
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, New Rect(50, 50, 25, 25))

                ' This rectangle is also blurred and drawn at 50% opacity.
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, New Rect(75, 75, 25, 25))

                ' Stop applying the blur to subsquent drawings.
                dc.Pop()

                ' This rectangle is drawn at 50% opacity with no blur effect.
                dc.DrawRectangle(Brushes.Blue, shapeOutlinePen, New Rect(100, 100, 25, 25))
            End Using

            ' Display the drawing using an image control.
            Dim theImage As New Image()
            Dim dImageSource As New DrawingImage(dGroup)
            theImage.Source = dImageSource

            Me.Content = theImage

        End Sub




    End Class

End Namespace

설명

이 효과는 명령에 의해 Pop 제거될 때까지 모든 후속 그리기 작업에 적용됩니다.