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Graphics.DrawImage Method (Image, Rectangle, Int32, Int32, Int32, Int32, GraphicsUnit, ImageAttributes)

Draws the specified portion of the specified Image at the specified location and with the specified size.

Namespace: System.Drawing
Assembly: System.Drawing (in system.drawing.dll)

public void DrawImage (
	Image image,
	Rectangle destRect,
	int srcX,
	int srcY,
	int srcWidth,
	int srcHeight,
	GraphicsUnit srcUnit,
	ImageAttributes imageAttr
)
public void DrawImage (
	Image image, 
	Rectangle destRect, 
	int srcX, 
	int srcY, 
	int srcWidth, 
	int srcHeight, 
	GraphicsUnit srcUnit, 
	ImageAttributes imageAttr
)
public function DrawImage (
	image : Image, 
	destRect : Rectangle, 
	srcX : int, 
	srcY : int, 
	srcWidth : int, 
	srcHeight : int, 
	srcUnit : GraphicsUnit, 
	imageAttr : ImageAttributes
)
Not applicable.

Parameters

image

Image to draw.

destRect

Rectangle structure that specifies the location and size of the drawn image. The image is scaled to fit the rectangle.

srcX

The x-coordinate of the upper-left corner of the portion of the source image to draw.

srcY

The y-coordinate of the upper-left corner of the portion of the source image to draw.

srcWidth

Width of the portion of the source image to draw.

srcHeight

Height of the portion of the source image to draw.

srcUnit

Member of the GraphicsUnit enumeration that specifies the units of measure used to determine the source rectangle.

imageAttr

ImageAttributes that specifies recoloring and gamma information for the image object.

Exception typeCondition

ArgumentNullException

image is a null reference (Nothing in Visual Basic).

The srcX, srcY, srcWidth, and srcHeight parameters specify a rectangular portion, of the image object to draw. The rectangle is relative to the upper-left corner of the source image. This portion is scaled to fit inside the rectangle specified by the destRect parameter.

The following code 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 an image from a JPEG file SampImag.jpg in the folder of the example.

  • Creates a destination rectangle in which to draw the image.

  • Creates the coordinates of a source rectangle from which to extract a portion of the image.

  • Sets the unit of measure of the source rectangle to pixels.

  • Draws the original image to the screen.

  • Creates an additional rectangle in which to draw an adjusted image.

  • Creates and sets the attributes of the adjusted image to have a larger-than-usual gamma value.

  • Draws the adjusted image to the screen.

For the original, unadjusted destination rectangle, the position locates the image on the screen, and the sizes of the source and destination rectangles determine the scaling of the drawn image, and the size of the source rectangle determines what portion of the original image is drawn to the screen.

private void DrawImageRect4IntAtrrib(PaintEventArgs e)
{
             
    // Create image.
    Image newImage = Image.FromFile("SampImag.jpg");
             
    // Create rectangle for displaying original image.
    Rectangle destRect1 = new Rectangle(100, 25, 450, 150);
             
    // Create coordinates of rectangle for source image.
    int x = 50;
    int y = 50;
    int width = 150;
    int height = 150;
    GraphicsUnit units = GraphicsUnit.Pixel;
             
    // Draw original image to screen.
    e.Graphics.DrawImage(newImage, destRect1, x, y, width, height, units);
             
    // Create rectangle for adjusted image.
    Rectangle destRect2 = new Rectangle(100, 175, 450, 150);
             
    // Create image attributes and set large gamma.
    ImageAttributes imageAttr = new ImageAttributes();
    imageAttr.SetGamma(4.0F);
             
    // Draw adjusted image to screen.
    e.Graphics.DrawImage(newImage, destRect2, x, y, width, height, units, imageAttr);
}

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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

.NET Compact Framework

Supported in: 2.0, 1.0
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