A Lookup parameter represents a text (string), a real number (double) or an integer number. Which data type it represents is controlled by the setting Value type. In all cases the possible values are predefined.
The value range of a lookup parameter is defined by its lookup values which are added as children.
In expressions a lookup parameter acts as a variable of the data type defined by its Value type. The value is taken from the Name of the selected lookup value. If a lookup parameter isn't set during evaluation of an expression the default value is either a zero-length string or the numerical value zero depending on its Value type.
Settings
The following settings are specific for lookup parameters:
Setting name |
Description |
|---|---|
Value type |
Data type with String, Double or Integer as possible values. The default is String. |
Display as radio buttons |
Checked if the parameter shall be displayed as radio buttons else it's displayed as a drop-down list. The default is checked. |
Hide values if disabled |
Checked if values that are disabled by disallowed combination rules should be hidden. The default is unchecked. |
Orientation |
Radio buttons can be displayed Vertical or Horizontal. |
Show help image of selected |
If set the help of image of selected value is shown next to the parameter in the selected position. Inline positions means that both the image and the control are rendered within the Width of the parameter. |
Selected value image width |
Width of the image to display for selected value. Required when the help image shall be displayed Inline or Right of values. |
Selected value image height |
Height of the image to display for selected value. Required when the help image shall be displayed Inline, Above values or Below values. |
Value icon width |
Width of icons to display next to each value when the parameter is displayed as radio buttons. |
Value icon height |
Height of icons to display next to each value when the parameter is displayed as radio buttons. |
See also general parameter settings.
