Point 结构
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
提供有序的 x 坐标和 y 坐标整数对,该坐标对在二维平面中定义一个点。
public value class Point : IEquatable<System::Drawing::Point>
public value class Point
[System.ComponentModel.TypeConverter("System.Drawing.PointConverter, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
public struct Point : IEquatable<System.Drawing.Point>
public struct Point
public struct Point : IEquatable<System.Drawing.Point>
[System.ComponentModel.TypeConverter(typeof(System.Drawing.PointConverter))]
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public struct Point
[<System.ComponentModel.TypeConverter("System.Drawing.PointConverter, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")>]
type Point = struct
type Point = struct
[<System.ComponentModel.TypeConverter(typeof(System.Drawing.PointConverter))>]
[<System.Runtime.InteropServices.ComVisible(true)>]
[<System.Serializable>]
type Point = struct
Public Structure Point
Implements IEquatable(Of Point)
Public Structure Point
- 继承
- 属性
- 实现
示例
下面的代码示例使用为这些类型定义的多个重载运算符创建点和大小。 它还演示如何使用 SystemPens 类。
此示例旨在与 Windows 窗体 一起使用。 Create包含名为 subtractButton
的Button窗体。 将代码粘贴到窗体中, CreatePointsAndSizes
并从窗体的事件 Paint 处理方法调用 方法,作为 e
PaintEventArgs传递。
void CreatePointsAndSizes( PaintEventArgs^ e )
{
// Create the starting point.
Point startPoint = Point(subtractButton->Size);
// Use the addition operator to get the end point.
Point endPoint = startPoint + System::Drawing::Size( 140, 150 );
// Draw a line between the points.
e->Graphics->DrawLine( SystemPens::Highlight, startPoint, endPoint );
// Convert the starting point to a size and compare it to the
// subtractButton size.
System::Drawing::Size buttonSize = (System::Drawing::Size)startPoint;
if ( buttonSize == subtractButton->Size )
{
e->Graphics->DrawString( "The sizes are equal.", gcnew System::Drawing::Font( this->Font,FontStyle::Italic ), Brushes::Indigo, 10.0F, 65.0F );
}
}
private void CreatePointsAndSizes(PaintEventArgs e)
{
// Create the starting point.
Point startPoint = new Point(subtractButton.Size);
// Use the addition operator to get the end point.
Point endPoint = startPoint + new Size(140, 150);
// Draw a line between the points.
e.Graphics.DrawLine(SystemPens.Highlight, startPoint, endPoint);
// Convert the starting point to a size and compare it to the
// subtractButton size.
Size buttonSize = (Size)startPoint;
if (buttonSize == subtractButton.Size)
// If the sizes are equal, tell the user.
{
e.Graphics.DrawString("The sizes are equal.",
new Font(this.Font, FontStyle.Italic),
Brushes.Indigo, 10.0F, 65.0F);
}
}
Private Sub CreatePointsAndSizes(ByVal e As PaintEventArgs)
' Create the starting point.
Dim startPoint As New Point(subtractButton.Size)
' Use the addition operator to get the end point.
Dim endPoint As Point = Point.op_Addition(startPoint, _
New Size(140, 150))
' Draw a line between the points.
e.Graphics.DrawLine(SystemPens.Highlight, startPoint, endPoint)
' Convert the starting point to a size and compare it to the
' subtractButton size.
Dim buttonSize As Size = Point.op_Explicit(startPoint)
If (Size.op_Equality(buttonSize, subtractButton.Size)) Then
' If the sizes are equal, tell the user.
e.Graphics.DrawString("The sizes are equal.", _
New Font(Me.Font, FontStyle.Italic), _
Brushes.Indigo, 10.0F, 65.0F)
End If
End Sub
注解
若要将 转换为 PointPointF,请使用 Implicit。
构造函数
Point(Int32) |
使用由整数值指定的坐标初始化 Point 结构的新实例。 |
Point(Int32, Int32) |
使用指定坐标初始化 Point 结构的新实例。 |
Point(Size) |
字段
Empty |
属性
IsEmpty |
获取一个值,该值指示此 Point 是否为空。 |
X |
获取或设置此 Point 的 x 坐标。 |
Y |
获取或设置此 Point 的 y 坐标。 |
方法
Add(Point, Size) | |
Ceiling(PointF) | |
Equals(Object) |
指定此点实例是否包含与指定对象相同的坐标。 |
Equals(Point) |
指定此点实例是否包含与另一点相同的坐标。 |
GetHashCode() |
返回此 Point 的哈希代码。 |
Offset(Int32, Int32) |
按指定量平移此 Point。 |
Offset(Point) | |
Round(PointF) | |
Subtract(Point, Size) | |
ToString() |
将此 Point 转换为可读字符串。 |
Truncate(PointF) |
运算符
Addition(Point, Size) | |
Equality(Point, Point) | |
Explicit(Point to Size) | |
Implicit(Point to PointF) | |
Inequality(Point, Point) | |
Subtraction(Point, Size) |