Preview Configuration: hel_preview.ini

The settings file hel_preview.ini allows the configuration of the Graphic windows in the HELiOS Desktop or the HELiOS documents dialogue.

For the common file types (.JPG, .BMP, .PDF, .DOCX, .GIF, etc. ) the default options offered by default by the corresponding operating system, and registered in the installed applications are available.

These presettings can be overwritten by a different Viewer in the hel_preview.ini. Furthermore, other additional Viewers can be added or configured (also subsequently) through corresponding entries in [MODULE] and [EXTENSIONS].

Generally, one or several Viewers are implemented in a DLL. Each Viewer has an unambiguous name.

This entry can be found in the [MODULE] section of hel_preview.ini:

[MODULE]

HICAD_PLUS = HelPreviewHicadPlus.dll

HICAD_PLUSTHUMB = HelPreviewHicadPlus.dll

Here it is determined that there are two Viewers called HICAD_PLUS and HICAD_PLUSTHUMB, which are both implemented in the DLL HelPreviewHicadPlus.dll.

Which file type is to be displayed with which Viewer is determined in the [EXTENSIONS] section.

[EXTENSIONS]

.DEFAULT = HICAD_PLUS

.SZA = HICAD_PLUSTHUMB

.KRA = HICAD_PLUSTHUMB

The entry .DEFAULT= HICAD_PLUS determines that all file extensions which are not assigned to a particular Viewer will be displayed by the Viewer HICAD_PLUS.

For the file types .SZA and .KRA it is determined that they will be displayed by the Viewer HICAD_PLUSTHUMB.

Only the developer of the Viewer knows which file types a Viewer can display. This information therefore needs to be taken from the documentation of the Viewer.

Each file extension can exist only once in the [EXTENSIONS] section. This means that in the corresponding configuration, exactly one active Viewer exists for one file type.

The sections

[EXPLORER] (Graphic display in the context of the Properties window)
[MASK] (Preview in the dockable "Graphic" window)
[DETAIL] (Embedded preview in document detail masks)
[DOCKING] (Display in the "Graphic" tab of the Document masks)

contain settings for the optional graphics preview by means of preview images stored in the vault (applies to versions from HELiOS 2101.0 onwards) which need to be removed from the commenting if required.

Each of these sections contains a list of document formats (file name extensions) which are displayed in this way instead of using the normal viewer. For each shown document format one distinguishes between the following options:

THUMB: Low resolution for small representation. No zooming or scrolling possible. Image is shown as large as possible in the available space.
HQ: High resolution, also suitable for zooming.
DEFAULT: Display of original file in the configured HELiOS Viewer.
NONE: No graphic is shown for this format.

Section in the hel_preview.ini:

[EXPLORER]

;.IAM = THUMB

;.IPT = THUMB

;.IDW = THUMB

[MASK]

;.IAM = HQ

;.IPT = HQ

;.IDW = HQ

[DETAIL]

;.IAM = HQ

;.IPT = THUMB