property PropertiesList.AllowMultipleValuesOnEnum as Boolean
Specifies whether the enum types display bit combination of predefined values.

TypeDescription
Boolean A Boolean expression that indicates whether the EditEnum entries may display bit combination of predefined values. An EditEnum editor displays a list of predefined values.  
By default, the AllowMultipleValuesOnEnum property is False. If the AllowMultipleValuesOnEnum property is True, the EditEnum properties may display a checkbox for any predefined value in the enumeration that may be a bit combination. When user clicks the checkbox, the new value includes or excludes the clicked flag. The COM objects may allow bit combinations for predefined values. 

For instance, let's say that our control browses the AllowSelectObjects property of the Exontrol's eXG2antt component. The AllowSelectObjects property is of SelectObjectsEnum which allow bit combination of the following values:

The exSelectSingleObject flag can be combined with any previously value that will indicates that the control allows single selection only in the chart. 

The following screen shot shows the ExPropertiesList control when the AllowMultipleValuesOnEnum property is True, and Chart.AllowSelectObjects property is exSelectSingleObject Or exSelectBarsOnly:

The following screen shot shows the ExPropertiesList control when the AllowMultipleValuesOnEnum property is False ( by default ), and Chart.AllowSelectObjects property is exSelectSingleObject Or exSelectBarsOnly.