Hi,
Assuming your module control inherits from SiteModuleControl,
you need:
using mojoPortal.Business.WebHelpers;
at the top if you don't already have it.
Then you can do:
if(WebUser.IsInRoles(ModuleConfiguration.DraftEditRoles)) { // do something }
ModuleConfiguration is an instance of mojoPortal.Business.Module built into the base class SiteModuleControl
Hope that helps,
Joe