ADK_Field - Field context
The field context is a style element ( ADK_StyleElement ), which defines the way a field will be displayed in a GUI application. A field refers to a field control ( ADK_FieldControl ), which defines the control style and layout.
Besides attributes defining size and position of the element in the hosting control, the field defines the data source, which delivers data. Data sources may directly refer to database properties, but also to derived data calculated by means of transient fields or OSI functions.
In order to provide essential help information for the user, the field definition provides several text elements. Typically, text elements are provided via designer resource text definitions ( ADK_Text ). Text definitions typically define usage hints for the field in the specific context. Extended text information might be provided via the topic definition, which is linked to the database resource ( SDB_Resource ), the field inherits from. Details about using and creating different text definitions are described in " Defining text data for GUI elements ".
- data_ref - Data source definition
- disable_sorting - Sorting for this field will be disabled
- classx - Class reference
- field_control - Field control
- style_act_ref - Field control owning the field
- style_reg_ref - Field control owning the region
- style_col_ref - Field control owning the column
- action_control - Action control referring to the field resource
- __IDENTITY - Local object identity key
- ik - Primary key
- tk_column - Secondary key
- tk_row - Secondary key