Add-ons
- API
- Communication Center
- Disaster Recovery System
- Standard Object Library
  - Standard Object Library, Basics
  - Requirements and Installation
  - How to create a Standard Object Library
  - How to Create Data Point Types for the Standard Object Library
  - How to Create a New Standard Object Library Symbol
  - Examples for Standard Object Library Dollar Parameters
  - How to Create a Standard Object Library Faceplate
  - How to Export Library Project Data
  - How to Add a Standard Libary Symbol to a Panel
  - User Authorization in the StdLib
  - [stdlib]
  - Stdlib
  - HOOK Functions, Basics
    - HOOK Functions, Basics
    - hook Functions
      - hook_<libraryPrefix>_displayInfoAreaIcon()
        This function specifies which icon is displayed in an information area based on its state. The function then displays the icon for a symbol.
      - hook_<libraryPrefix>_enableElementarySymbol()
        This function specifies if an elementary symbol is active or inactive.
      - hook_<libraryPrefix>_faceplateHeadline()
        This function specifies the text for the header of a faceplate.
      - hook_<libraryPrefix>_faceplateWindowTitle()
        This function queries the text of the faceplate window title of the referenced data point.
      - hook_<libraryPrefix>_hasUserAuthorization()
        This function determines whether a certain user has the authorization to change the value of a data point element.
      - hook_<libraryPrefix>_highlightElementarySymbol()
        This function determines whether an elementary symbol is highlighted.
      - hook_<libraryPrefix>_namingFaceplateTabs()
        This function determines the titles for the tabs in a faceplate.
      - hook_<libraryPrefix>_objectTooltip()
        This function determines the tool tip text of a symbol.
      - hook_<libraryPrefix>_openFaceplate()
        This function opens the faceplate of a symbol.
      - hook_<libraryPrefix>_projectFillPopUpMenu()
        This function configures the context menu of a symbol and elementary symbols of a faceplate.
      - hook_<libraryPrefix>_visibleElementarySymbol()
        This function identifies whether an elementary symbol is visible.
    - Stdlib hook-Functions
- BACnet Application
- SmartSCADA
- WinCC OA Excel Report
- Video

hook_<libraryPrefix>_visibleElementarySymbol()

This function identifies whether an elementary symbol is visible.

Synopsis

bool hook_<libraryPrefix>_visibleElementarySymbol(string sDpe);

Parameter


Parameter	Description
sDpe	Name of the datapoint element to which the elementary symbol references.

Return Value

TRUE = Elementary symbol visible.

FALSE = Elementary symbol not visible.

Description

This function determines whether an elementary symbol is visible (by default, all are visible).

In the return value, call the function hook_<LibName>_hasDpeAnActiveAdress() so that only the symbols with a valid address to a data point element are visible.

Note that if a rule has already been created for this elementary symbol, the rule is then combined with this function by using an AND connection.

.You can find the function in the stdlib_hook_project.ctl under wincc_oa_path/Stdlib_3.18/scripts/libs/

bool hook_visibleElementarySymbol (string sDpe, string sUser="")
{
  //  if(sUser=="")
  //    sUser = getUserName();
  //return hook_hasDpeAnActiveAdress(sDpe);
  return true;
}