XtMalloc(3Xt) X11R5 XtMalloc(3Xt)NAME
XtMalloc, XtCalloc, XtRealloc, XtFree, XtNew, XtNewString - memory man‐
agement functions
SYNTAX
char *XtMalloc(size);
Cardinal size;
char *XtCalloc(num, size);
Cardinal num;
Cardinal size;
char *XtRealloc(ptr, num);
char *ptr;
Cardinal num;
void XtFree(ptr);
char *ptr;
type *XtNew(type);
type;
String XtNewString(string);
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 num‐
ber of bytes desired.
string Specifies a previously declared string.
type Specifies a previously declared data type.
DESCRIPTION
The 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, calls
The 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, calls
The 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, calls If ptr is NULL, allocates the new
storage without copying the old contents; that is, it simply calls
The function returns storage and allows it to be reused. If ptr is
NULL, returns immediately.
returns a pointer to the allocated storage. If there is insufficient
memory to allocate the new block, calls is a convenience macro that
calls with the following arguments specified:
((type *) XtMalloc((unsigned) sizeof(type))
returns a pointer to the allocated storage. If there is insufficient
memory to allocate the new block, calls is a convenience macro that
calls 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
XtMalloc(3Xt)