Performs a bit-block transfer of the color data, corresponding to a rectangle of pixels, from the screen to the drawing surface of the Graphics.
Namespace:
System.Drawing
Assembly:
System.Drawing (in System.Drawing.dll)
Visual Basic (Declaration)
Public Sub CopyFromScreen ( _
sourceX As Integer, _
sourceY As Integer, _
destinationX As Integer, _
destinationY As Integer, _
blockRegionSize As Size _
)
Dim instance As Graphics
Dim sourceX As Integer
Dim sourceY As Integer
Dim destinationX As Integer
Dim destinationY As Integer
Dim blockRegionSize As Size
instance.CopyFromScreen(sourceX, sourceY, _
destinationX, destinationY, blockRegionSize)
public void CopyFromScreen(
int sourceX,
int sourceY,
int destinationX,
int destinationY,
Size blockRegionSize
)
public:
void CopyFromScreen(
int sourceX,
int sourceY,
int destinationX,
int destinationY,
Size blockRegionSize
)
public function CopyFromScreen(
sourceX : int,
sourceY : int,
destinationX : int,
destinationY : int,
blockRegionSize : Size
)
Parameters
- sourceX
- Type: System..::.Int32
The x-coordinate of the point at the upper-left corner of the source rectangle.
- sourceY
- Type: System..::.Int32
The y-coordinate of the point at the upper-left corner of the source rectangle.
- destinationX
- Type: System..::.Int32
The x-coordinate of the point at the upper-left corner of the destination rectangle.
- destinationY
- Type: System..::.Int32
The y-coordinate of the point at the upper-left corner of the destination rectangle.
- blockRegionSize
- Type: System.Drawing..::.Size
The size of the area to be transferred.
The CopyFromScreen methods are useful for layering one image on top of another. To specify how the source and destination colors are blended, use one of the CopyFromScreen methods that takes a CopyPixelOperation parameter.
The following code example demonstrates how to use the CopyFromScreen for printing a copy of the current form.
Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Printing
Public Class Form1
Inherits Form
Private WithEvents printButton As New Button
Private WithEvents printDocument1 As New PrintDocument
Public Sub New()
printButton.Text = "Print Form"
Me.Controls.Add(printButton)
End Sub
Dim memoryImage As Bitmap
Private Sub CaptureScreen()
Dim myGraphics As Graphics = Me.CreateGraphics()
Dim s As Size = Me.Size
memoryImage = New Bitmap(s.Width, s.Height, myGraphics)
Dim memoryGraphics As Graphics = Graphics.FromImage(memoryImage)
memoryGraphics.CopyFromScreen(Me.Location.X, Me.Location.Y, 0, 0, s)
End Sub
Private Sub printDocument1_PrintPage(ByVal sender As System.Object, _
ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles _
printDocument1.PrintPage
e.Graphics.DrawImage(memoryImage, 0, 0)
End Sub
Private Sub printButton_Click(ByVal sender As System.Object, ByVal e As _
System.EventArgs) Handles printButton.Click
CaptureScreen()
printDocument1.Print()
End Sub
Public Shared Sub Main()
Application.Run(New Form1())
End Sub
End Class
using System;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Printing;
public class Form1 :
Form
{
private Button printButton = new Button();
private PrintDocument printDocument1 = new PrintDocument();
public Form1()
{
printButton.Text = "Print Form";
printButton.Click += new EventHandler(printButton_Click);
printDocument1.PrintPage += new PrintPageEventHandler(printDocument1_PrintPage);
this.Controls.Add(printButton);
}
void printButton_Click(object sender, EventArgs e)
{
CaptureScreen();
printDocument1.Print();
}
Bitmap memoryImage;
private void CaptureScreen()
{
Graphics myGraphics = this.CreateGraphics();
Size s = this.Size;
memoryImage = new Bitmap(s.Width, s.Height, myGraphics);
Graphics memoryGraphics = Graphics.FromImage(memoryImage);
memoryGraphics.CopyFromScreen(this.Location.X, this.Location.Y, 0, 0, s);
}
private void printDocument1_PrintPage(System.Object sender,
System.Drawing.Printing.PrintPageEventArgs e)
{
e.Graphics.DrawImage(memoryImage, 0, 0);
}
public static void Main()
{
Application.Run(new Form1());
}
}
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
Reference
Other Resources