RegionData 類別

定義

命名空間:

System.Drawing.Drawing2D

組件:

System.Drawing.Common.dll

套件:

System.Drawing.Common v9.0.0-preview.6.24327.6

來源:

RegionData.cs

封裝構成 Region 對象的數據。 無法繼承這個類別。

public ref class RegionData sealed

public sealed class RegionData

type RegionData = class

Public NotInheritable Class RegionData

繼承

Object

RegionData

範例

下列範例的設計目的是要與 Windows Forms 搭配使用，而且需要 PaintEventArgse，這是 Paint 事件處理程式的參數。 程式代碼會執行下列動作：

• 建立矩形，並將其繪製到黑色的畫面。

• 使用矩形建立區域。

• 取得 RegionData。

• 使用 DisplayRegionData 協助程式函式，將區域數據（位元組數位）繪製到畫面。

public:
   void GetRegionDataExample( PaintEventArgs^ e )
   {
      // Create a rectangle and draw it to the screen in black.
      Rectangle regionRect = Rectangle(20,20,100,100);
      e->Graphics->DrawRectangle( Pens::Black, regionRect );

      // Create a region using the first rectangle.
      System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( regionRect );

      // Get the RegionData for this region.
      RegionData^ myRegionData = myRegion->GetRegionData();
      int myRegionDataLength = myRegionData->Data->Length;
      DisplayRegionData( e, myRegionDataLength, myRegionData );
   }

   // THIS IS A HELPER FUNCTION FOR GetRegionData.
   void DisplayRegionData( PaintEventArgs^ e, int len, RegionData^ dat )
   {
      // Display the result.
      int i;
      float x = 20,y = 140;
      System::Drawing::Font^ myFont = gcnew System::Drawing::Font( "Arial",8 );
      SolidBrush^ myBrush = gcnew SolidBrush( Color::Black );
      e->Graphics->DrawString( "myRegionData = ", myFont, myBrush, PointF(x,y) );
      y = 160;
      for ( i = 0; i < len; i++ )
      {
         if ( x > 300 )
         {
            y += 20;
            x = 20;
         }
         e->Graphics->DrawString( dat->Data[ i ].ToString(), myFont, myBrush, PointF(x,y) );
         x += 30;
      }
   }

public void GetRegionDataExample(PaintEventArgs e)
{
             
    // Create a rectangle and draw it to the screen in black.
    Rectangle regionRect = new Rectangle(20, 20, 100, 100);
    e.Graphics.DrawRectangle(Pens.Black, regionRect);
             
    // Create a region using the first rectangle.
    Region myRegion = new Region(regionRect);
             
    // Get the RegionData for this region.
    RegionData myRegionData = myRegion.GetRegionData();
    int myRegionDataLength = myRegionData.Data.Length;
    DisplayRegionData(e, myRegionDataLength, myRegionData);
}
             
// THIS IS A HELPER FUNCTION FOR GetRegionData.
public void DisplayRegionData(PaintEventArgs e,
    int len,
    RegionData dat)
{
             
    // Display the result.
    int i;
    float x = 20, y = 140;
    Font myFont = new Font("Arial", 8);
    SolidBrush myBrush = new SolidBrush(Color.Black);
    e.Graphics.DrawString("myRegionData = ",
        myFont,
        myBrush,
        new PointF(x, y));
    y = 160;
    for(i = 0; i < len; i++)
    {
        if(x > 300)
        {
            y += 20;
            x = 20;
        }
        e.Graphics.DrawString(dat.Data[i].ToString(),
            myFont,
            myBrush,
            new PointF(x, y));
        x += 30;
    }
}

Public Sub GetRegionDataExample(ByVal e As PaintEventArgs)

    ' Create the first rectangle and draw it to the screen in black.
    Dim regionRect As New Rectangle(20, 20, 100, 100)
    e.Graphics.DrawRectangle(Pens.Black, regionRect)

    ' Create a region using the first rectangle.
    Dim myRegion As New [Region](regionRect)

    ' Get the RegionData for this region.
    Dim myRegionData As RegionData = myRegion.GetRegionData()
    Dim myRegionDataLength As Integer = myRegionData.Data.Length
    DisplayRegionData(e, myRegionDataLength, myRegionData)
End Sub

' Helper Function for GetRegionData.
Public Sub DisplayRegionData(ByVal e As PaintEventArgs, ByVal len As Integer, _
ByVal dat As RegionData)

    ' Display the result.
    Dim i As Integer
    Dim x As Single = 20
    Dim y As Single = 140
    Dim myFont As New Font("Arial", 8)
    Dim myBrush As New SolidBrush(Color.Black)
    e.Graphics.DrawString("myRegionData = ", myFont, myBrush, _
    New PointF(x, y))
    y = 160
    For i = 0 To len - 1
        If x > 300 Then
            y += 20
            x = 20
        End If
        e.Graphics.DrawString(dat.Data(i).ToString(), myFont, _
        myBrush, New PointF(x, y))
        x += 30
    Next i
End Sub

屬性

Data	取得或設定指定 Region 物件的位元組陣列。

方法

Equals(Object)	判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetHashCode()	做為預設哈希函式。 (繼承來源 Object)
GetType()	取得目前實例的 Type。 (繼承來源 Object)
MemberwiseClone()	建立目前 Object的淺層複本。 (繼承來源 Object)
ToString()	傳回表示目前 物件的字串。 (繼承來源 Object)