XtToolkitThreadInitialize - initialize the toolkit for multiple threads

       If  XtToolkitThreadInitialize  was previously called, it returns.  The application programmer must ensure
       that two or more threads do not simultaneously attempt to call XtToolkitThreadInitialize; the  effect  of
       this  is  undefined.  XtToolkitThreadInitialize returns True if the host operating system has threads and
       the Intrinsics are thread safe.

       XtToolkitThreadInitialize - initialize the toolkit for multiple threads

XToolkitIntrinsics-CLanguageInterfaceXlib-CLanguageXInterface

X Version 11                                       libXt 1.2.1                      XtToolkitThreadInitialize(3)

       #include <X11/Intrinsic.h>

       Boolean XtToolkitThreadInitialize(void);