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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)

public sealed class RegionData
public final class RegionData
public final class RegionData
Not applicable.

The following example is designed for use with Windows Forms, and it requires PaintEventArgse, 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 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 void GetRegionDataExample(PaintEventArgs e)
{
    // Create a rectangle and draw it to the screen in black.
    Rectangle regionRect = new Rectangle(20, 20, 100, 100);

    e.get_Graphics().DrawRectangle(Pens.get_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.get_Data().length;

    DisplayRegionData(e, myRegionDataLength, myRegionData);
} //GetRegionDataExample

// THIS IS A HELPER FUNCTION FOR GetRegionData.
public void DisplayRegionData(PaintEventArgs e, int len, RegionData dat)
{
    // Display the result.
    int i;
    float x = 20;
    float y = 140;
    Font myFont = new Font("Arial", 8);
    SolidBrush myBrush = new SolidBrush(Color.get_Black());

    e.get_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.get_Graphics().DrawString(dat.get_Data().get_Item(i).ToString(), 
            myFont, myBrush, new PointF(x, y));
        x += 30;
    }
} //DisplayRegionData

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
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