RegionData Class

Definition

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

public sealed class RegionData
Inheritance
RegionData

Examples

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 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;
    }
}

Properties

Data

Gets or sets an array of bytes that specify the Region object.

Methods

Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Applies to

Product Versions
.NET 8 (package-provided), 9 (package-provided)
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7 (package-provided), 4.7, 4.7.1 (package-provided), 4.7.1, 4.7.2 (package-provided), 4.7.2, 4.8 (package-provided), 4.8, 4.8.1
.NET Standard 2.0 (package-provided)
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9