---
title: objc_msgSend_stret
framework: objectivec
role: symbol
role_heading: Function
path: objectivec/objc_msgsend_stret
---

# objc_msgSend_stret

Sends a message with a data-structure return value to an instance of a class.

## Declaration

```occ
extern void objc_msgSend_stret();
```

## Parameters:

Parameters: stretAddr: On input, a pointer that points to a block of memory large enough to contain the return value of the method. On output, contains the return value of the method. theReceiver: A pointer to the instance of the class that is to receive the message. theSelector: A pointer of type SEL. Pass the selector of the method that handles the message. …: A variable argument list containing the arguments to the method. Discussion When it encounters a method call, the compiler generates a call to one of the functions objc_msgSend, objc_msgSend_stret, objc_msgSendSuper, or objc_msgSendSuper_stret. Messages sent to an object’s superclass (using the super keyword) are sent using objc_msgSendSuper; other messages are sent using objc_msgSend. Methods that have data structures as return values are sent using objc_msgSendSuper_stret and objc_msgSend_stret.

## See Also

### Sending Messages

- [objc_msgSend](objectivec/objc_msgsend.md)
- [objc_msgSend_fpret](objectivec/objc_msgsend_fpret.md)
- [objc_msgSendSuper](objectivec/objc_msgsendsuper.md)
- [objc_msgSendSuper_stret](objectivec/objc_msgsendsuper_stret.md)