PointF.Subtraction 操作员
定义
重要
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PointF按指定大小的负值转换 a。
重载
Subtraction(PointF, Size)
public:
static System::Drawing::PointF operator -(System::Drawing::PointF pt, System::Drawing::Size sz);public static System.Drawing.PointF operator -(System.Drawing.PointF pt, System.Drawing.Size sz);static member ( - ) : System.Drawing.PointF * System.Drawing.Size -> System.Drawing.PointFPublic Shared Operator - (pt As PointF, sz As Size) As PointF参数
返回
翻译 PointF后的 。
适用于
Subtraction(PointF, SizeF)
public:
static System::Drawing::PointF operator -(System::Drawing::PointF pt, System::Drawing::SizeF sz);public static System.Drawing.PointF operator -(System.Drawing.PointF pt, System.Drawing.SizeF sz);static member ( - ) : System.Drawing.PointF * System.Drawing.SizeF -> System.Drawing.PointFPublic Shared Operator - (pt As PointF, sz As SizeF) As PointF参数
返回
翻译 PointF后的 。
示例
下面的代码示例演示如何使用 Subtraction 运算符。 若要运行此示例，请将以下代码粘贴到Windows窗体中。 处理表单 Paint 的事件和调用 opSubtractionExample，传递 e 方式 PaintEventArgs。
private void OpSubtractionExample(PaintEventArgs e)
{
PointF point1 = new PointF(120.5F, 120F);
SizeF size1 = new SizeF(20.5F, 20.5F);
PointF point2 = point1 - size1;
e.Graphics.DrawLine(Pens.Blue, point1, point2);
}
Private Sub OpSubtractionExample(ByVal e As PaintEventArgs)
Dim point1 As New PointF(120.5F, 120F)
Dim size1 As New SizeF(120.5F, 30.5F)
Dim point2 As PointF = point1 - size1
e.Graphics.DrawLine(Pens.Blue, point1, point2)
End Sub
注解
运算符
此运算符的等效方法为 PointF.Subtract(PointF, SizeF)