By default, the FormatEnumValue property is "" (empty), which indicates it has no effect. The FormatEnumValue property specifies the HTML expression used to display each enum literal's value, which appears to the right of the item in drop-down editors. The FormatEnumValue property can use ex-HTML formatting to customize how the value appears, as demonstrated in the sample below. The AllowMultipleValuesOnEnum property specifies whether the enum types display bit combination of predefined values.

The following screenshot illustrates how the enum literal values are displayed (the values are shown in white text on a black background):

The FormatEnumValue property supports the following keywords:

• value, specifies the value of enum literal
• misc, is a bitmask representing miscellaneous flags related to the item:

  Value	Flag	Description
  1	Selected	The item is selected
  2	Focused	The item has input focus
  4	Has Checkbox	The item has a checkbox
  8	Drop-down Checkboxes	The drop-down displays checkboxes
  16	Checked	The item's checkbox is checked

This property/method supports predefined constants and operators/functions as described here.

For instance,

• "value",  shows the raw value
• "misc",  display the miscellaneous flags of the current literal
• "(`" + (len(value) > 2 ? `0x` + hex(value) : value) + `")" displays values of 2 digits or fewer as-is, and longer values in hexadecimal prefixed with 0x
• "`<bgcolor black><fgcolor white> ` + (len(value) > 2 ? `0x` + hex(value) : value ) + ` `", displays the value in white text on a black background, showing values with 2 digits or fewer as-is, and longer values as hexadecimal prefixed with 0x