Is the combo box editable?.
[Visual Basic .NET] Public ReadOnly Property Editable As Boolean
[C#] public bool Editable {get;}
[C++]
HRESULT get_Editable(
VARIANT_BOOL* Editable
);
[C++]Parameters
Editable [out, retval] Editable is a parameter of type VARIANT_BOOL
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.