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RegionData Class

Encapsulates the data that makes up a Region object. This class cannot be inherited.

Namespace:  System.Drawing.Drawing2D
Assembly:  System.Drawing (in System.Drawing.dll)

'Declaration
Public NotInheritable Class RegionData
'Usage
Dim instance As RegionData

The following example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. The code performs the following actions:

  • Creates a rectangle and draw its to the screen in black.

  • Creates a region using the rectangle.

  • Gets the RegionData.

  • Draws the region data (an array of bytes) to the screen, by using the DisplayRegionData helper function.

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

System.Object
  System.Drawing.Drawing2D.RegionData

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
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