Purplesignal_emit_return_1

void*
purple_signal_emit_return_1 (
  void* instance,
  const char* signal,
  ...
)

Emits a signal and returns the first non-NULL return value.

Further signal handlers are NOT called after a handler returns something other than NULL.

This function is not directly available to language bindings

`instance`	`void*`
	The instance emitting the signal.
	The argument can be `NULL`.
	The data is owned by the caller of the function.
`signal`	`const char*`
	The signal being emitted.
	The data is owned by the caller of the function.
	The value is a NUL terminated UTF-8 string.
`...`
	The arguments to pass to the callbacks.

Returns:	`void*`
	The first non-NULL return value.
	The data is owned by the called function.
	The return value can be `NULL`.