Rect.Union 方法

定义

命名空间:

System.Windows

程序集:

WindowsBase.dll

创建一个矩形，该矩形的大小刚好足以包含给定矩形和指定点或第二个矩形。

重载

Union(Point)	放大当前矩形，使其刚好足以包含指定点。
Union(Rect)	放大当前矩形，使其刚好足以包含指定矩形。
Union(Rect, Point)	创建一个矩形，该矩形的大小刚好足以包含指定矩形和指定点。
Union(Rect, Rect)	创建一个矩形，该矩形的大小刚好足以包含两个指定矩形。

Union(Point)

放大当前矩形，使其刚好足以包含指定点。

public:
 void Union(System::Windows::Point point);

public void Union (System.Windows.Point point);

member this.Union : System.Windows.Point -> unit

Public Sub Union (point As Point)

参数

point

Point

要包含的点。

示例

下面的示例演示如何使用 Union(Point) 方法将当前矩形完全展开到足以包含给定 Point的 。

private Rect unionExample1()
{
    // Initialize new rectangle.
    Rect myRectangle = new Rect();

    // The Location property specifies the coordinates of the upper left-hand 
    // corner of the rectangle. 
    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);

    // The Union method expands the current rectangle exactly enough to contain 
    // the specified point. myRectangle expands to a location of 0,0 and a size
    // of 210,55.
    myRectangle.Union(new Point(0,0));

    // Returns 0,0,210,55
    return myRectangle;
}

另请参阅

• Contains(Point)

Union(Rect)

放大当前矩形，使其刚好足以包含指定矩形。

public:
 void Union(System::Windows::Rect rect);

public void Union (System.Windows.Rect rect);

member this.Union : System.Windows.Rect -> unit

Public Sub Union (rect As Rect)

参数

rect

Rect

要包含的矩形。

示例

下面的示例演示如何使用 Union(Rect) 方法完全扩展当前矩形，以包含指定的矩形。

private Rect unionExample2()
{
    // Initialize new rectangle.
    Rect myRectangle = new Rect();

    // The Location property specifies the coordinates of the upper left-hand 
    // corner of the rectangle. 
    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);

    // Create second rectangle.
    Rect myRectangle2 = new Rect();
    myRectangle2.Location = new Point(0, 0);
    myRectangle2.Size = new Size(200, 50);

    // The Union method expands the current rectangle exactly enough to contain 
    // the specified rectangle. myRectangle expands to a location of 0,0 and a size
    // of 210,55.
    myRectangle.Union(myRectangle2);

    // Returns 0,0,210,55
    return myRectangle;
}

另请参阅

• Contains(Rect)

Union(Rect, Point)

创建一个矩形，该矩形的大小刚好足以包含指定矩形和指定点。

public:
 static System::Windows::Rect Union(System::Windows::Rect rect, System::Windows::Point point);

public static System.Windows.Rect Union (System.Windows.Rect rect, System.Windows.Point point);

static member Union : System.Windows.Rect * System.Windows.Point -> System.Windows.Rect

Public Shared Function Union (rect As Rect, point As Point) As Rect

参数

rect

Rect

要包含的矩形。

point

Point

要包含的点。

返回

Rect

大小刚好足以包含指定矩形和指定点的矩形。

示例

下面的示例演示如何使用 Union(Rect, Point) 方法创建一个矩形，该矩形的大小正好足以包含给定的矩形和给定 Point的 。

private Rect unionExample3()
{
    // Initialize new rectangle.
    Rect myRectangle = new Rect();

    // The Location property specifies the coordinates of the upper left-hand 
    // corner of the rectangle. 
    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);

    // Create second rectangle.
    Rect myRectangle2 = new Rect();
    myRectangle2.Location = new Point(0, 0);
    myRectangle2.Size = new Size(200, 50);

    // The Union method expands the current rectangle exactly enough to contain 
    // the specified rectangle and the specified Point. In this example, returnRect 
    // expands to a location of 0,0 and a size of 250,60.
    Rect returnRect = Rect.Union(myRectangle2, new Point(250,60));

    // Returns 0,0,250,60
    return returnRect;
}

另请参阅

• Contains(Point)

Union(Rect, Rect)

创建一个矩形，该矩形的大小刚好足以包含两个指定矩形。

public:
 static System::Windows::Rect Union(System::Windows::Rect rect1, System::Windows::Rect rect2);

public static System.Windows.Rect Union (System.Windows.Rect rect1, System.Windows.Rect rect2);

static member Union : System.Windows.Rect * System.Windows.Rect -> System.Windows.Rect

Public Shared Function Union (rect1 As Rect, rect2 As Rect) As Rect

参数

rect1

Rect

要包含的第一个矩形。

rect2

Rect

要包含的第二个矩形。

返回

Rect

所得矩形。

示例

下面的示例演示如何使用 Union(Rect, Rect) 方法创建一个刚好足以包含两个给定矩形的矩形。

private Rect unionExample4()
{
    // Initialize new rectangle.
    Rect myRectangle = new Rect();

    // The Location property specifies the coordinates of the upper left-hand 
    // corner of the rectangle. 
    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);

    // Create second rectangle.
    Rect myRectangle2 = new Rect();
    myRectangle2.Location = new Point(0, 0);
    myRectangle2.Size = new Size(200, 50);

    // Create a third rectangle.
    Rect myRectangle3 = new Rect();
    myRectangle3.Location = new Point(210, 60);
    myRectangle3.Size = new Size(50, 50);

    // The Union method expands the current rectangle exactly enough to contain 
    // the two specified rectangles. In this example, returnRect expands to 
    // a location of 0,0 and a size of 260,110.
    Rect returnRect = Rect.Union(myRectangle2, myRectangle3);

    // Returns 0,0,260,110
    return returnRect;
}

另请参阅

• Contains(Rect)