Rect 結構

定義

描述矩形的寬度、高度和位置。

public value class Rect : IFormattable
[System.ComponentModel.TypeConverter(typeof(System.Windows.RectConverter))]
[System.Serializable]
public struct Rect : IFormattable
[System.ComponentModel.TypeConverter(typeof(System.Windows.RectConverter))]
public struct Rect : IFormattable
[<System.ComponentModel.TypeConverter(typeof(System.Windows.RectConverter))>]
[<System.Serializable>]
type Rect = struct
    interface IFormattable
[<System.ComponentModel.TypeConverter(typeof(System.Windows.RectConverter))>]
type Rect = struct
    interface IFormattable
Public Structure Rect
Implements IFormattable
繼承
屬性
實作

範例

下列範例示範如何使用 Rect 結構,以使用 XAML 指定矩形的維度和位置。

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Shapes;

namespace SDKSample
{
    public partial class RectExample : Page
    {
        public RectExample()
        {   
            Path myPath1 = new Path();
            myPath1.Stroke = Brushes.Black;
            myPath1.StrokeThickness = 1;
            SolidColorBrush mySolidColorBrush = new SolidColorBrush();
            mySolidColorBrush.Color = Color.FromArgb(255, 204, 204, 255);
            myPath1.Fill = mySolidColorBrush;

            // Create the rectangle.
            // This RectangleGeometry specifies a rectangle that is 100 pixels high and
            // 150 wide. The left side of the rectangle is 10 pixels from the left of the 
            // Canvas and the top side of the rectangle is 100 pixels from the top of the Canvas.  
            // Note: You could alternatively use the Rect Constructor to create this:
            // Rect my Rect1 = new Rect(10,100,150,100");
            Rect myRect1 = new Rect();
            myRect1.X = 10;
            myRect1.Y = 100;
            myRect1.Width = 150;
            myRect1.Height = 100;
            RectangleGeometry myRectangleGeometry1 = new RectangleGeometry();
            myRectangleGeometry1.Rect = myRect1;

            GeometryGroup myGeometryGroup1 = new GeometryGroup();
            myGeometryGroup1.Children.Add(myRectangleGeometry1);

            myPath1.Data = myGeometryGroup1;

            Path myPath2 = new Path();
            myPath2.Stroke = Brushes.Black;
            myPath2.StrokeThickness = 1;
            myPath2.Fill = mySolidColorBrush;

            // Create the rectangle.
            // This Rect uses the Size property to specify a height of 50 and width
            // of 200. The Location property uses a Point value to determine the location of the
            // top-left corner of the rectangle.
            Rect myRect2 = new Rect();
            myRect2.Size = new Size(50, 200);
            myRect2.Location = new Point(300, 100);
            RectangleGeometry myRectangleGeometry2 = new RectangleGeometry();
            myRectangleGeometry2.Rect = myRect2;

            GeometryGroup myGeometryGroup2 = new GeometryGroup();
            myGeometryGroup2.Children.Add(myRectangleGeometry2);

            myPath2.Data = myGeometryGroup2;

            // Add path shape to the UI.
            Canvas myCanvas = new Canvas();
            myCanvas.Children.Add(myPath1);
            myCanvas.Children.Add(myPath2);
            this.Content = myCanvas;       
        }
    }
}

Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Shapes

Namespace SDKSample
    Partial Public Class RectExample
        Inherits Page
        Public Sub New()
            Dim myPath1 As New Path()
            myPath1.Stroke = Brushes.Black
            myPath1.StrokeThickness = 1
            Dim mySolidColorBrush As New SolidColorBrush()
            mySolidColorBrush.Color = Color.FromArgb(255, 204, 204, 255)
            myPath1.Fill = mySolidColorBrush

            ' Create the rectangle.
            ' This RectangleGeometry specifies a rectangle that is 100 pixels high and
            ' 150 wide. The left side of the rectangle is 10 pixels from the left of the 
            ' Canvas and the top side of the rectangle is 100 pixels from the top of the Canvas.  
            ' Note: You could alternatively use the Rect Constructor to create this:
            ' Dim myRect1 As New Rect(10,100,150,100")
            Dim myRect1 As New Rect()
            myRect1.X = 10
            myRect1.Y = 100
            myRect1.Width = 150
            myRect1.Height = 100
            Dim myRectangleGeometry1 As New RectangleGeometry()
            myRectangleGeometry1.Rect = myRect1

            Dim myGeometryGroup1 As New GeometryGroup()
            myGeometryGroup1.Children.Add(myRectangleGeometry1)

            myPath1.Data = myGeometryGroup1

            Dim myPath2 As New Path()
            myPath2.Stroke = Brushes.Black
            myPath2.StrokeThickness = 1
            myPath2.Fill = mySolidColorBrush

            ' Create the rectangle.
            ' This Rect uses the Size property to specify a height of 50 and width
            ' of 200. The Location property uses a Point value to determine the location of the
            ' top-left corner of the rectangle.
            Dim myRect2 As New Rect()
            myRect2.Size = New Size(50, 200)
            myRect2.Location = New Point(300, 100)
            Dim myRectangleGeometry2 As New RectangleGeometry()
            myRectangleGeometry2.Rect = myRect2

            Dim myGeometryGroup2 As New GeometryGroup()
            myGeometryGroup2.Children.Add(myRectangleGeometry2)

            myPath2.Data = myGeometryGroup2

            ' Add path shape to the UI.
            Dim myCanvas As New Canvas()
            myCanvas.Children.Add(myPath1)
            myCanvas.Children.Add(myPath2)
            Me.Content = myCanvas
        End Sub
    End Class

End Namespace
<Page  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
  <Canvas>
    
    <!-- This rectangle demonstrates using the X, Y, Width, and Height properties
         of a Rect object. -->
    <Path Stroke="Black" StrokeThickness="1" Fill="LemonChiffon">
      <Path.Data>

        <!-- This RectangleGeometry specifies a rectangle that is 100 pixels high and
             150 wide. The left side of the rectangle is 10 pixels from the left of the 
             Canvas and the top side of the rectangle is 100 pixels from the top of the Canvas.  
             Note: An abbreviated syntax for creating an equivalent rectangle is:
             <RectangleGeometry Rect="10,100,150,100" /> -->
        <RectangleGeometry>
          <RectangleGeometry.Rect>
            <Rect X="10" Y="100" Width="150" Height="100" />
          </RectangleGeometry.Rect>
        </RectangleGeometry>
      </Path.Data>
    </Path>

    <!-- This rectangle demonstrates using the Size and Location properties of a Rect object. -->
    <Path Stroke="Black" StrokeThickness="1" Fill="LemonChiffon">
      <Path.Data>

        <!-- This RectangleGeometry uses the Size property to specify a height of 50 and width
             of 200. The Location property uses a Point value to determine the location of the
             top-left corner of the rectangle. /> -->
        <RectangleGeometry>
          <RectangleGeometry.Rect>
            <Rect Size="50,200" Location="300,100" />
          </RectangleGeometry.Rect>
        </RectangleGeometry>
      </Path.Data>
    </Path>
  </Canvas>
</Page>

下列範例示範如何使用程式碼來建立矩形,並將其新增至頁面。 此範例也會說明如何尋找新矩形的大小和座標資訊,並在矩形下方呈現資訊 TextBox

// Create a rectangle and add it to the page. Also,
// find size and coordinate information about this
// new rectangle and render information in a TextBox 
// below the rectangle.
private StackPanel createRectExample1()
{
    // Initialize new rectangle.
    Rect myRectangle = new Rect();

    // The Location property specifies the coordinates of the upper left-hand 
    // corner of the rectangle. Set the Location property to an X coordinate of 10 and a
    // Y coordinate of 5. 
    myRectangle.Location = new Point(10, 5);

    // Set the Size property of the rectangle with a width of 200
    // and a height of 50.
    myRectangle.Size = new Size(200, 50);

    RectangleGeometry myRectangleGeometry = new RectangleGeometry();
    myRectangleGeometry.Rect = myRectangle;

    // This path is defined by the rectangle.
    Path myPath = new Path();
    myPath.Fill = Brushes.LemonChiffon;
    myPath.Stroke = Brushes.Black;
    myPath.StrokeThickness = 1;
    myPath.Data = myRectangleGeometry;

    //////////// Create string of rectangle property information /////////////
    // This string will contain all the size and coordinate property
    // information about the rectangle.
    /////////////////////////////////////////////////////////////////////////
    string rectInfo = "Rectangle Property Information: ";

    // Bottom property gets the y-axis value of the bottom of the rectangle. 
    // For this rectangle the value is 55.
    rectInfo = rectInfo + "Bottom: " + myRectangle.Bottom;

    // BottomLeft property gets the coordinates of the bottom left corner of the rectangle. 
    // For this rectangle the value is 10,55.
    rectInfo = rectInfo + "| BottomLeft: " + myRectangle.BottomLeft;

    // BottomRight property gets the coordinates of the bottom right corner of the rectangle. 
    // For this rectangle the value is 210,55.
    rectInfo = rectInfo + "| BottomRight: " + myRectangle.BottomRight;

    // Height property gets or sets the height of the rectangle. 
    // For this rectangle the value is 50.
    rectInfo = rectInfo + "| Height: " + myRectangle.Height;

    // Width property gets or sets the width of the rectangle. 
    // For this rectangle the value is 200.
    rectInfo = rectInfo + "| Width: " + myRectangle.Width;

    // Left property gets the x-axis position of the left side of the rectangle which is 
    // equivalent to getting the rectangle's X property. 
    // For this rectangle the value is 10.
    rectInfo = rectInfo + "| Left: " + myRectangle.Left;

    // Location property gets or sets the position of the rectangle's top-left corner.
    // For this rectangle the value is 10,5.
    rectInfo = rectInfo + "| Location: " + myRectangle.Location;

    // Right property gets the x-axis value of the right side of the rectangle. 
    // For this rectangle the value is 210.
    rectInfo = rectInfo + "| Right: " + myRectangle.Right;

    // Size property gets or sets the width and height of the rectangle.  
    // For this rectangle the value is 200,50.
    rectInfo = rectInfo + "| Size: " + myRectangle.Size;

    // Top property gets the y-axis position of the top of the rectangle which is 
    // equivalent to getting the rectangle's Y property.
    // For this rectangle the value is 5.
    rectInfo = rectInfo + "| Top: " + myRectangle.Top;

    // TopLeft property gets the position of the top-left corner of the rectangle, which 
    // is equivalent to (X, Y).   
    // For this rectangle the value is 10,5.
    rectInfo = rectInfo + "| TopLeft: " + myRectangle.TopLeft;

    // TopRight property gets the position of the top-left corner of the rectangle, which 
    // is equivalent to (X + Width, Y).   
    // For this rectangle the value is 210,5.
    rectInfo = rectInfo + "| TopRight: " + myRectangle.TopRight;

    // X property gets or sets the location of the rectangle's left side.  
    // For this rectangle the value is 10.
    rectInfo = rectInfo + "| X: " + myRectangle.X;

    // Y property gets or sets the location of the rectangle's top side.  
    // For this rectangle the value is 5.
    rectInfo = rectInfo + "| Y: " + myRectangle.Y;

    //////// End of creating string containing rectangle property information ////////

    // This StackPanel will contain the rectangle and TextBlock.
    StackPanel parentPanel = new StackPanel();

    // Add the rectangle path to the StackPanel. This will display the rectangle.
    parentPanel.Children.Add(myPath);

    // Add a TextBlock to display the rectangle's size and coordinate information.
    TextBlock myTextBlock = new TextBlock();
    myTextBlock.Text = rectInfo;
    parentPanel.Children.Add(myTextBlock);

    // Return the parent container to be displayed to the screen.
    return parentPanel;
}

備註

XAML Attribute Usage

<object property="x,y,width,height"/>  

XAML 值

x
System.Double

矩形左側的 X 座標位置。

y
System.Double

矩形頂端的 Y 座標位置。

width (寬度)
System.Double

非負值,表示 Width 矩形的 。

height (高度)
System.Double

非負值,表示 Height 矩形的 。

建構函式

Rect(Double, Double, Double, Double)

初始化 Rect 結構的新執行個體,這個執行個體具有指定的 X 座標、Y 座標、寬度和高度。

Rect(Point, Point)

初始化 Rect 結構的新執行個體,這個執行個體剛好可以包含兩個指定的點。

Rect(Point, Size)

初始化 Rect 結構的新執行個體,這個執行個體具有指定的左上角位置和指定的寬度及高度。

Rect(Point, Vector)

初始化 Rect 結構的新執行個體,這個執行個體剛好可以包含指定的點以及所指定點和所指定向量的總和。

Rect(Size)

初始化 Rect 類別的新執行個體,這個執行個體是所指定的大小而且位在 (0,0)。

屬性

Bottom

取得矩形底端的 Y 軸值。

BottomLeft

取得矩形左下角的位置。

BottomRight

取得矩形右下角的位置。

Empty

取得特殊值,這個值表示沒有位置或區域的矩形。

Height

取得或設定矩形的高度。

IsEmpty

取得值,這個值表示矩形是否為 Empty 矩形。

Left

取得矩形左側的 X 軸值。

Location

取得或設定矩形左上角的位置。

Right

取得矩形右側的 X 軸值。

Size

取得或設定矩形的寬度和高度。

Top

取得矩形頂端的 Y 軸位置。

TopLeft

取得矩形左上角的位置。

TopRight

取得矩形右上角的位置。

Width

取得或設定矩形的寬度。

X

取得或設定矩形左側的 X 軸值。

Y

取得或設定矩形上方的 Y 軸值。

方法

Contains(Double, Double)

表示矩形是否包含指定的 X 座標和 Y 座標。

Contains(Point)

表示矩形是否包含指定的點。

Contains(Rect)

表示矩形是否包含指定的矩形。

Equals(Object)

表示指定的物件是否等於目前矩形。

Equals(Rect)

表示指定的矩形是否等於目前矩形。

Equals(Rect, Rect)

表示指定的矩形是否相等。

GetHashCode()

建立矩形的雜湊程式碼。

Inflate(Double, Double)

使用所指定寬度和高度數量,往所有方向展開或壓縮矩形。

Inflate(Rect, Double, Double)

建立矩形,這個矩形是以指定的寬度和高度數量往所有方向展開或壓縮指定的矩形而產生的矩形。

Inflate(Rect, Size)

傳回矩形,這個矩形是以指定的 Size 往所有方向展開所指定矩形而產生的矩形。

Inflate(Size)

使用指定的 Size 往所有方向展開矩形。

Intersect(Rect)

尋找目前矩形與所指定矩形的交集,並將結果儲存為目前的矩形。

Intersect(Rect, Rect)

傳回兩個指定之矩形的交集。

IntersectsWith(Rect)

表示指定的矩形是否與目前矩形交集。

Offset(Double, Double)

以指定的水平和垂直數量移動矩形。

Offset(Rect, Double, Double)

傳回矩形,這個矩形是使用所指定水平和垂直數量從指定之矩形位移的矩形。

Offset(Rect, Vector)

傳回矩形,這個矩形是使用所指定向量從指定之矩形位移的矩形。

Offset(Vector)

以指定的向量移動矩形。

Parse(String)

從指定的字串表示建立新矩形。

Scale(Double, Double)

將目前矩形大小乘上指定的 X 和 Y 值。

ToString()

傳回矩形的字串表示。

ToString(IFormatProvider)

使用指定的格式提供者,傳回矩形的字串表示。

Transform(Matrix)

套用指定的矩陣轉換矩形。

Transform(Rect, Matrix)

傳回矩形,這個矩形是將所指定矩陣套用至指定的矩形而產生。

Union(Point)

將目前矩形展開為剛好可以包含指定的點。

Union(Rect)

將目前矩形展開為剛好可以包含指定的矩形。

Union(Rect, Point)

建立矩形,這個矩形剛好可以包含指定的矩形和指定的點。

Union(Rect, Rect)

建立矩形,這個矩形剛好可以包含兩個指定的矩形。

運算子

Equality(Rect, Rect)

比較兩個矩形是否完全相等。

Inequality(Rect, Rect)

比較兩個矩形是否不相等。

明確介面實作

IFormattable.ToString(String, IFormatProvider)

使用指定的格式,格式化目前執行個體的值。

適用於