How do I pass a struct as an argument in pthread in c?

Question

How do I pass a struct as an argument in pthread in c:

    void * aFunction (aStruct1 *theStruct1, aStruct2 *theStruct2, aStruct3 *theStruct3){
        printf("%s", theStruct1->text);
    }
    
    pthread_t thread[2];
    pthread_create(&thread[0], NULL, aFunction, "how do i pass all the struct argument here (theStruct1, theStruct2 , theStruct3)");
    pthread_create(&thread[1], NULL, aFunction, "how do i pass all the struct argument here  (theStruct1, theStruct2 , theStruct3)");
    pthread_join(thread[1],NULL);
    pthread_join(thread[2],NULL);

I have tried calling it as so with no result:

    void * aFunction (aStruct1 *theStruct1, aStruct2 *theStruct2, aStruct3 *theStruct3){
        printf("%s", theStruct1->text);
    }
    
    pthread_t thread[2];
    pthread_create(&thread[0], NULL, aFunction(theStruct1, theStruct2 , theStruct3), NULL);
    pthread_create(&thread[1], NULL, aFunction(theStruct1, theStruct2 , theStruct3), NULL);
    pthread_join(thread[1],NULL);
    pthread_join(thread[2],NULL);