Hello,

Let's assume we have the following declaration in plain C:
typedef struct service_request_struct {
   /* ... something here ... */
} SERVICE_REQUEST_STRUCT;

And thereafter I'm going to use only capitalized version of this type - SERVICE_REQUEST_STRUCT, while 'struct service_request_struct' is never used anywhere in the code.
Find usages will work on for SERVICE_REQUEST_STRUCT well, while if I'm trying to find usages for service_request_struct nothing is found (selecting 'struct service_request_struct' results in error box with information that find usages cannot be applied for this context).

Because typedef in C is basically not a new type, but rather a type synonim, I'd suggest that find usages should work for both cases.