xtfree(3) [hpux man page]

XtFree()																  XtFree()

Name
  XtFree - free allocated memory.

Synopsis
  void XtFree(ptr);
	 char *ptr;

Inputs
  ptr	    Specifies the address of the allocated memory to be freed.

Description
  XtFree()  frees  a  block of memory previously allocated by XtMalloc(), XtRealloc(), XtCalloc(), XtNew() or XtNewString() so that it can be
  reused by the system.

  If ptr is NULL, XtFree() returns immediately.

Usage
  The ptr argument is of type char *.  In many cases, you will have to cast the data you are freeing to this type in order to  avoid  warning
  messages from your compiler.

  A  number  of  Xt  functions return strings or other values that must be freed with XtFree() when the caller will no longer need them.  You
  should be sure to check the documentation of any function that returns a value to find out who "owns" the memory and	who  is  expected  to
  free it.

  Calling  the	Toolkit's XtMalloc() and XtFree() is more portable and provides better error checking than calling system-specific malloc and
  free.  You should not use XtFree() on memory that was allocated with malloc() or other non-Xt memory allocation routines.

See Also
  XtCalloc(1), XtMalloc(1), XtNew(1), XtNewString(1), XtRealloc(1).

Xt - Memory Allocation															  XtFree()

XtMalloc(3)							   XT FUNCTIONS 						       XtMalloc(3)

NAME

       XtMalloc, XtCalloc, XtRealloc, XtFree, XtNew, XtNewString - memory management functions

SYNTAX

       char *XtMalloc(Cardinal size);

       char *XtCalloc(Cardinal num, Cardinal size);

       char *XtRealloc(char *ptr, Cardinal num);

       void XtFree(char *ptr);

       type *XtNew(type);

       String XtNewString(String string);

ARGUMENTS

       num	 Specifies the number of bytes or array elements.

       ptr	 Specifies a pointer to the old storage or to the block of storage that is to be freed.

       size	 Specifies the size of an array element (in bytes) or the number of bytes desired.

       string	 Specifies a previously declared string.

       type	 Specifies a previously declared data type.

DESCRIPTION

       The XtMalloc functions returns a pointer to a block of storage of at least the specified size bytes.  If there is insufficient memory to
       allocate the new block, XtMalloc calls XtErrorMsg.

       The XtCalloc function allocates space for the specified number of array elements of the specified size and initializes the space to zero.
       If there is insufficient memory to allocate the new block, XtCalloc calls XtErrorMsg.

       The XtRealloc function changes the size of a block of storage (possibly moving it).  Then, it copies the old contents (or as much as will
       fit) into the new block and frees the old block.  If there is insufficient memory to allocate the new block, XtRealloc calls XtErrorMsg.
       If ptr is NULL, XtRealloc allocates the new storage without copying the old contents; that is, it simply calls XtMalloc.

       The XtFree function returns storage and allows it to be reused.	If ptr is NULL, XtFree returns immediately.

       XtNew returns a pointer to the allocated storage.  If there is insufficient memory to allocate the new block, XtNew calls XtErrorMsg.
       XtNew is a convenience macro that calls XtMalloc with the following arguments specified:

       ((type *) XtMalloc((unsigned) sizeof(type))

       XtNewString returns a pointer to the allocated storage.	If there is insufficient memory to allocate the new block, XtNewString calls XtEr-
       rorMsg.	XtNewString is a convenience macro that calls XtMalloc with the following arguments specified:

       (strcpy(XtMalloc((unsigned) strlen(str) + 1), str))

SEE ALSO

       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11							    libXt 1.0.5 						       XtMalloc(3)