Graphics.DrawImage(Image*, const Rect, INT, INT, INT, INT, Unit, ImageAttributes*, DrawImageAbort, VOID*) method

Applies to: desktop apps only

The Graphics::DrawImage method draws an image.

Syntax

Status DrawImage(
  [in]       Image *image,
  [in, ref]  const Rect &destRect,
  [in]       INT srcx,
  [in]       INT srcy,
  [in]       INT srcwidth,
  [in]       INT srcheight,
  [in]       Unit srcUnit,
  [in]       ImageAttributes *imageAttributes,
  [in]       DrawImageAbort callback,
  [in]       VOID *callbackData
);

Parameters

• image [in]
  Type: Image*

  Pointer to an Image object that specifies the source image.

• destRect [in, ref]
  Type: const Rect

  Reference to a rectangle that bounds the drawing area for the image.

• srcx [in]
  Type: INT

  Integer that specifies the x-coordinate of the upper-left corner of the portion of the source image to be drawn.

• srcy [in]
  Type: INT

  Integer that specifies the y-coordinate of the upper-left corner of the portion of the source image to be drawn.

• srcwidth [in]
  Type: INT

  Integer that specifies the width of the portion of the source image to be drawn.

• srcheight [in]
  Type: INT

  Integer that specifies the height of the portion of the source image to be drawn.

• srcUnit [in]
  Type: Unit

  Element of the Unit enumeration that specifies the unit of measure for the image. The default value is UnitPixel.

• imageAttributes [in]
  Type: ImageAttributes*

  Pointer to an ImageAttributes object that specifies the color and size attributes of the image to be drawn. The default value is NULL.

• callback [in]
  Type: DrawImageAbort

  Callback method used to cancel the drawing in progress. The default value is NULL.

• callbackData [in]
  Type: VOID*

  Pointer to additional data used by the method specified by the callback parameter. The default value is NULL.

Return value

Type:

Type: Status****

If the method succeeds, it returns Ok, which is an element of the Status enumeration.

If the method fails, it returns one of the other elements of the Status enumeration.

Remarks

The portion of the source image to be drawn is scaled to fit the rectangle.

Examples

The following example draws the original source image and then draws a portion of the image in a specified rectangle.

VOID Example_DrawImage5(HDC hdc)

{
   Graphics graphics(hdc);

   // Create an Image object.
   Image image(L"pattern.png");

   // Draw the original source image.
   graphics.DrawImage(&image, 10, 10);

   // Define the portion of the image to draw.
   int srcX = 70;
   int srcY = 20;
   int srcWidth = 100;
   int srcHeight = 100;

   // Create a Rect object that specifies the destination of the image.
   Rect destRect(200, 10, image.GetWidth(), image.GetHeight());

   // Create an ImageAttributes object that specifies a recoloring from red to blue.
   ImageAttributes remapAttributes;
   ColorMap redToBlue;
   redToBlue.oldColor = Color(255, 255, 0, 0);
   redToBlue.newColor = Color(255, 0, 0, 255);
   remapAttributes.SetRemapTable(1, &redToBlue);

   // Draw the resized image.
   graphics.DrawImage(
   &image,
   destRect,
   srcX,
   srcY,
   srcWidth,
   srcHeight,
   UnitPixel,
   &remapAttributes,
   NULL,
   NULL);
}

The following illustration shows the output of the preceding code.

Requirements

See also

Graphics

Image

ImageAttributes

Point

SetRemapTable

Unit

Loading and Displaying Bitmaps

Drawing, Positioning, and Cloning Images

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Build date: 3/6/2012