[C#/WINUI3/.NET8] ContainerVisual 클래스 : Children 속성에서 VisualCollection 객체의 InsertAtTop 메소드를 사용해 자식 비주얼 제일 앞에 추가하기

■ ContainerVisual 클래스의 Children 속성에서 VisualCollection 객체의 InsertAtTop 메소드를 사용해 자식 비주얼을 제일 앞에 추가하는 방법을 보여준다.

▶ 예제 코드 (C#)


using System.Numerics;

using Microsoft.UI;
using Microsoft.UI.Composition;
using Microsoft.UI.Xaml.Hosting;

// ...

Grid grid;

// ...

Visual gridVisual = ElementCompositionPreview.GetElementVisual(grid);

Compositor compositor = gridVisual.Compositor;

CompositionColorBrush compositionColorBrush = compositor.CreateColorBrush(Colors.Blue);

DropShadow dropShadow = compositor.CreateDropShadow();

dropShadow.BlurRadius = 15.0f;
dropShadow.Offset     = new Vector3(10, 10, 0);
dropShadow.Color      = Colors.Black;

SpriteVisual spriteVisual = compositor.CreateSpriteVisual();

spriteVisual.Size   = new Vector2(200, 200);
spriteVisual.Offset = new Vector3(100, 100, 0);
spriteVisual.Brush  = compositionColorBrush;
spriteVisual.Shadow = dropShadow;

ContainerVisual containerVisual = compositor.CreateContainerVisual();

containerVisual.Children.InsertAtTop(spriteVisual);

ElementCompositionPreview.SetElementChildVisual(this.grid, containerVisual);

using System.Numerics;

using Microsoft.UI;

using Microsoft.UI.Composition;

using Microsoft.UI.Xaml.Hosting;

// ...

Grid grid;

// ...

Visual gridVisual = ElementCompositionPreview.GetElementVisual(grid);

Compositor compositor = gridVisual.Compositor;

CompositionColorBrush compositionColorBrush = compositor.CreateColorBrush(Colors.Blue);

DropShadow dropShadow = compositor.CreateDropShadow();

dropShadow.BlurRadius = 15.0f;

dropShadow.Offset = new Vector3(10, 10, 0);

dropShadow.Color = Colors.Black;

SpriteVisual spriteVisual = compositor.CreateSpriteVisual();

spriteVisual.Size = new Vector2(200, 200);

spriteVisual.Offset = new Vector3(100, 100, 0);

spriteVisual.Brush = compositionColorBrush;

spriteVisual.Shadow = dropShadow;

ContainerVisual containerVisual = compositor.CreateContainerVisual();

containerVisual.Children.InsertAtTop(spriteVisual);

ElementCompositionPreview.SetElementChildVisual(this.grid, containerVisual);