Rectangle.Truncate(RectangleF) 方法
定义
重要
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通过截断 RectangleF 值，将指定的 RectangleF 转换为 Rectangle。
public:
static System::Drawing::Rectangle Truncate(System::Drawing::RectangleF value);public static System.Drawing.Rectangle Truncate (System.Drawing.RectangleF value);static member Truncate : System.Drawing.RectangleF -> System.Drawing.RectanglePublic Shared Function Truncate (value As RectangleF) As Rectangle参数
- value
- RectangleF
要转换的 RectangleF。
返回
的截断值 Rectangle。
示例
下面的代码示例演示如何使用 Round 和 Truncate 方法。 此示例旨在与 Windows 窗体一起使用。 将此代码粘贴到窗体中， RoundingAndTruncatingRectangles 并在处理窗体 Paint 的事件时调用 方法，作为 ePaintEventArgs传递。
private:
void RoundingAndTruncatingRectangles( PaintEventArgs^ e )
{
// Construct a new RectangleF.
RectangleF myRectangleF = RectangleF(30.6F,30.7F,40.8F,100.9F);
// Call the Round method.
Rectangle roundedRectangle = Rectangle::Round( myRectangleF );
// Draw the rounded rectangle in red.
Pen^ redPen = gcnew Pen( Color::Red,4.0f );
e->Graphics->DrawRectangle( redPen, roundedRectangle );
// Call the Truncate method.
Rectangle truncatedRectangle = Rectangle::Truncate( myRectangleF );
// Draw the truncated rectangle in white.
Pen^ whitePen = gcnew Pen( Color::White,4.0f );
e->Graphics->DrawRectangle( whitePen, truncatedRectangle );
// Dispose of the custom pens.
delete redPen;
delete whitePen;
}
private void RoundingAndTruncatingRectangles(PaintEventArgs e)
{
// Construct a new RectangleF.
RectangleF myRectangleF =
new RectangleF(30.6F, 30.7F, 40.8F, 100.9F);
// Call the Round method.
Rectangle roundedRectangle = Rectangle.Round(myRectangleF);
// Draw the rounded rectangle in red.
Pen redPen = new Pen(Color.Red, 4);
e.Graphics.DrawRectangle(redPen, roundedRectangle);
// Call the Truncate method.
Rectangle truncatedRectangle = Rectangle.Truncate(myRectangleF);
// Draw the truncated rectangle in white.
Pen whitePen = new Pen(Color.White, 4);
e.Graphics.DrawRectangle(whitePen, truncatedRectangle);
// Dispose of the custom pens.
redPen.Dispose();
whitePen.Dispose();
}
Private Sub RoundingAndTruncatingRectangles( _
ByVal e As PaintEventArgs)
' Construct a new RectangleF.
Dim myRectangleF As New RectangleF(30.6F, 30.7F, 40.8F, 100.9F)
' Call the Round method.
Dim roundedRectangle As Rectangle = Rectangle.Round(myRectangleF)
' Draw the rounded rectangle in red.
Dim redPen As New Pen(Color.Red, 4)
e.Graphics.DrawRectangle(redPen, roundedRectangle)
' Call the Truncate method.
Dim truncatedRectangle As Rectangle = _
Rectangle.Truncate(myRectangleF)
' Draw the truncated rectangle in white.
Dim whitePen As New Pen(Color.White, 4)
e.Graphics.DrawRectangle(whitePen, truncatedRectangle)
' Dispose of the custom pens.
redPen.Dispose()
whitePen.Dispose()
End Sub
