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  • Display modes
  • Transparency
  • Position, Symmetry
  • Programming
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Stored procedures
Display modes
An image can be displayed in a window, a window control, a report control, a page control or a block according to several display modes.
These display modes produce different effects:

100%: The image is displayed at 100% from the top left corner of the window, the control or the block.

Centered: The image is displayed at 100% and it is centered in the window, control or block.

Stretched: The image is stretched to occupy the entire surface of the window, control or block.

Tiled: The image is displayed at 100% and it is repeated in order to occupy the entire surface of the window, control or block.

Homothetic: The image is proportionally enlarged to be entirely displayed in the window, control or block.

Homothetic extended: The image is proportionally enlarged in order for the smallest image side to to be entirely displayed in the window, control or block.

Homothetic centered: The image is homothetic and it is centered in the window, control or block.

Homothetic centered extended: The image is extended and it is centered in the window, control or block.
Homothetic without increasing size: If the image can be entirely displayed in the window, Image control or block, it is displayed at 100%. If the image is bigger than the window, Image control or block, it is automatically reduced proportionally in order to be entirely displayed.


In homothetic mode, image quality can be improved when the image is reduced from its original size:
    Transparency
    When displaying an image, you have the ability to define its transparency options. These options will be kept even if the image is modified through programming (Image property).
    The possible options are as follows:
    • Transparent magenta: The magenta color in the image will be transparent when the image is displayed in the editor or at runtime.
      Transparency: none
      Transparency: none
      Transparent magenta
      Transparent magenta

    • Top left pixel: all pixels with the same color as the top left pixel of image will be transparent.
    Caution: The use of a transparent background image significantly slows down the re-display of the window (time multiplied by 3 or 4). We advise you to:
    • avoid using images with a transparent background.
    • for the images in GIF or PSD format, make sure that no transparency color is described in the image format (via an image processing software for example).
    Position, Symmetry
    Programming
    The images can be managed through programming:
    • via the following properties:
      Versions 09 and later
      BackgroundImage
      New in version 09
      BackgroundImage
      BackgroundImage
      The BackgroundImage property is used to identify and modify the background color of an element: window, page, control or report.
      Versions 20 and later
      BackgroundImagePrinted
      New in version 20
      BackgroundImagePrinted
      BackgroundImagePrinted
      The BackgroundImagePrinted is used to:
      • Determine if the background image of a report (form or other) should be printed.
      • Print (or not) the background image of a report.
      Versions 09 and later
      BackgroundImageState
      New in version 09
      BackgroundImageState
      BackgroundImageState
      The BackgroundImageState property allows you to get and change the number of drawings in the image associated with the background of a button.
      Versions 09 and later
      Image
      New in version 09
      Image
      Image
      Image is used to find out and modify the background image displayed in a control or in a block.
      Versions 09 and later
      ImageMode
      New in version 09
      ImageMode
      ImageMode
      The ImageMode property is used to get and change the display mode of an image in an Image control, in the column of a table of type Image or in the background of a Chart control in a window.
    • via the following functions:
      Versions 09 and later
      WinBackgroundImage
      New in version 09
      WinBackgroundImage
      WinBackgroundImage
      Modifies the background image of a window and specifies the display mode of this image.
    Minimum version required
    • Version 9
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