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Graphics.DrawImage Method (Image, Single, Single)

.NET Framework 1.1

Draws the specified Image object, using its original physical size, at the specified location.

[Visual Basic]
Overloads Public Sub DrawImage( _
   ByVal image As Image, _
   ByVal x As Single, _
   ByVal y As Single _
)
[C#]
public void DrawImage(
 Image image,
 float x,
 float y
);
[C++]
public: void DrawImage(
 Image* image,
 float x,
 float y
);
[JScript]
public function DrawImage(
   image : Image,
 x : float,
 y : float
);

Parameters

image
Image object to draw.
x
x-coordinate of the upper-left corner of the drawn image.
y
y-coordinate of the upper-left corner of the drawn image.

Return Value

This method does not return a value.

Remarks

An Image object stores a value for pixel width and a value for horizontal resolution (dots per inch). The physical width, measured in inches, of an image is the pixel width divided by the horizontal resolution. For example, an image with a pixel width of 216 and a horizontal resolution of 72 dots per inch has a physical width of 3 inches. Similar remarks apply to pixel height and physical height.

This method draws an image using its physical size, so the image will have its correct size in inches regardless of the resolution (dots per inch) of the display device. For example, suppose an image has a pixel width of 216 and a horizontal resolution of 72 dots per inch. If you call this method to draw that image on a device that has a resolution of 96 dots per inch, the pixel width of the rendered image will be (216/72)*96 = 288.

Example

[Visual Basic, C#] 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 an image from a JPEG file SampImag.jpg in the folder of the example.
  • Creates the coordinates of a point at which to draw the upper-left corner of the image.
  • Draws the unscaled image to the screen.
[Visual Basic] 
Public Sub DrawImage2Float(e As PaintEventArgs)
' Create image.
Dim newImage As Image = Image.FromFile("SampImag.jpg")
' Create coordinates for upper-left corner of image.
Dim x As Single = 100F
Dim y As Single = 100F
' Draw image to screen.
e.Graphics.DrawImage(newImage, x, y)
End Sub
        
[C#] 
public void DrawImage2Float(PaintEventArgs e)
{
// Create image.
Image newImage = Image.FromFile("SampImag.jpg");
// Create coordinates for upper-left corner of image.
float x = 100.0F;
float y = 100.0F;
// Draw image to screen.
e.Graphics.DrawImage(newImage, x, y);
}
        

[C++, JScript] No example is available for C++ or JScript. To view a Visual Basic or C# example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

Graphics Class | Graphics Members | System.Drawing Namespace | Graphics.DrawImage Overload List

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