Region.MakeEmpty 메서드

정의

네임스페이스:

System.Drawing

어셈블리:

System.Drawing.Common.dll

패키지:

System.Drawing.Common v8.0.0

Source:

Region.cs

Region을 빈 내부로 초기화합니다.

public:
 void MakeEmpty();

public void MakeEmpty ();

member this.MakeEmpty : unit -> unit

Public Sub MakeEmpty ()

예제

다음 코드 예제에서는 사용 하는 방법을 보여 줍니다는 Region 생성자 및 MakeEmpty 메서드입니다. 이 예제는 Windows Forms 사용하도록 설계되었습니다. 폼을 만들고 다음 코드를 붙여넣습니다. FillEmptyRegion 양식의 Paint 이벤트 처리 메서드에서 메서드를 호출하고 를 로 PaintEventArgs전달 e 합니다.

private:
   void FillEmptyRegion( PaintEventArgs^ e )
   {
      // Create a region from a rectangle.
      Rectangle originalRectangle = Rectangle(40,40,40,50);
      System::Drawing::Region^ smallRegion = gcnew System::Drawing::Region( originalRectangle );

      // Call MakeEmpty.
      smallRegion->MakeEmpty();

      // Fill the region in red and draw the original rectangle
      // in black. Note there is nothing filled in.
      e->Graphics->FillRegion( Brushes::Red, smallRegion );
      e->Graphics->DrawRectangle( Pens::Black, originalRectangle );
   }

private void FillEmptyRegion(PaintEventArgs e)
{

    // Create a region from a rectangle.
    Rectangle originalRectangle = new Rectangle(40, 40, 40, 50);
    Region smallRegion = new Region(originalRectangle);

    // Call MakeEmpty.
    smallRegion.MakeEmpty();

    // Fill the region in red and draw the original rectangle
    // in black. Note there is nothing filled in.
    e.Graphics.FillRegion(Brushes.Red, smallRegion);
    e.Graphics.DrawRectangle(Pens.Black, originalRectangle);
}

Private Sub FillEmptyRegion(ByVal e As PaintEventArgs)

    ' Create a region from a rectangle.
    Dim originalRectangle As New Rectangle(40, 40, 40, 50)
    Dim smallRegion As New Region(originalRectangle)

    ' Call MakeEmpty.
    smallRegion.MakeEmpty()

    ' Fill the region in red and draw the original rectangle
    ' in black. Note there is nothing filled in.
    e.Graphics.FillRegion(Brushes.Red, smallRegion)
    e.Graphics.DrawRectangle(Pens.Black, originalRectangle)

End Sub