A Bitmap item is a rectangular image made up of pixels arranged in columns and rows.

Bitmap items may be inserted into a dataset using Insert from File or as datasets using Add Overlay


  • Bitmap file: _bmpfile$
    The file containing the Bitmap. Bitmap items which do not use linked files leave this property empty.

  • Bitmap type: _classDib$
    The type of image this Bitmap tem displays.

  • Colour depth: _depth&
    The number of bits defining each pixel in a Bitmap. The more depth a Bitmap has, the more colours it can show simultaneously.

  • Compression: _compression#
    The compression which has been applied to the Bitmap data. Uncompressed Bitmap items have a compression of 1, and JPEG Bitmapitems can have a compression as small as 0.1.

  • Height: _height&
    The number of rows in the Bitmap item.

  • Resample method: _resample&
    The method a Bitmap or Grid item uses when pixel values need to be resampled.

  • Resolution: _resolution#
    The resolution of a Polygon, QZone, or Bitmap item.
  • The value is the resolution of the invisible cached QZone item. If there is no cached QZone item, the Polygon item's resolution is reported as zero.
    A QZone item is made up of progressively smaller squares. Its resolution is the size of the smallest QZone square. The resolution of a Bitmap item is the size of each pixel.

  • Transparent: _transparentColour$ /_alphaTransparency&
    Is the Bitmap item transparent? If transparent, any light coloured pixels will not obscure the graphics which are underneath. Some displays and printers do not fully support transparency.

  • Width: _width&
    The number of pixels in each row of a Bitmap.

TIP: See also Item Properties