OvalShape 构造函数 (Int32, Int32, Int32, Int32)

项目
10/25/2012

初始化 OvalShape 类的新实例，指定其位置和大小。

命名空间： Microsoft.VisualBasic.PowerPacks
程序集： Microsoft.VisualBasic.PowerPacks.Vs（在 Microsoft.VisualBasic.PowerPacks.Vs.dll 中）

语法

声明
Public Sub New ( _
    left As Integer, _
    top As Integer, _
    width As Integer, _
    height As Integer _
)

public OvalShape(
    int left,
    int top,
    int width,
    int height
)

public:
OvalShape(
    int left, 
    int top, 
    int width, 
    int height
)

new : 
        left:int * 
        top:int * 
        width:int * 
        height:int -> OvalShape

public function OvalShape(
    left : int, 
    top : int, 
    width : int, 
    height : int
)

参数

left
类型：System.Int32

top
类型：System.Int32

width
类型：System.Int32
表示宽度 (以像素为单位) 的 OvalShape的 Integer 。

height
类型：System.Int32
表示高度 (以像素为单位) OvalShape的 Integer 。

备注

OvalShape 控件直接在窗体或容器控件无法显示;必须在 ShapeContainer 对象包含它。在初始化 OvalShape后，必须将其 Parent 属性设置为现有 ShapeContainer 或到 ShapeContainer的新实例。

示例

下面的示例创建 ShapeContainer 和 OvalShape，将其添加到窗体中，并显示一个 100 像素直径圆形。

Private Sub DrawCircle2()
    Dim canvas As New Microsoft.VisualBasic.PowerPacks.ShapeContainer
    ' Declare an OvalShape and set the location and size.
    Dim oval1 As New Microsoft.VisualBasic.PowerPacks.OvalShape(20, 20,
      120, 120)
    ' Set the form as the parent of the ShapeContainer.
    canvas.Parent = Me
    ' Set the ShapeContainer as the parent of the OvalShape.
    oval1.Parent = canvas
End Sub

private void DrawCircle2()
{
    Microsoft.VisualBasic.PowerPacks.ShapeContainer canvas = 
        new Microsoft.VisualBasic.PowerPacks.ShapeContainer();
    // Declare an OvalShape and set the location and size.
    Microsoft.VisualBasic.PowerPacks.OvalShape oval1 = 
        new Microsoft.VisualBasic.PowerPacks.OvalShape(20, 20, 120, 120);
    // Set the form as the parent of the ShapeContainer.
    canvas.Parent = this;
    // Set the ShapeContainer as the parent of the OvalShape.
    oval1.Parent = canvas;
}