ColorGroup.UndefinedColorCallback
From Xojo Documentation
Property (As ColorGroup.UndefinedColorDelegate )
aColorGroup.Enabled = newColorGroup.UndefinedColorDelegateValue
or
ColorGroup.UndefinedColorDelegateValue = aColorGroup.Enabled
Supported for all project types and targets.
or
ColorGroup.UndefinedColorDelegateValue = aColorGroup.Enabled
Supported for all project types and targets.
Set a delegate here to have it be called if a specified named color is undefined.