XAllocSizeHints man page on Hurd

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XAllocSizeHints(3)		XLIB FUNCTIONS		    XAllocSizeHints(3)

NAME
       XAllocSizeHints, XSetWMNormalHints, XGetWMNormalHints, XSetWMSizeHints,
       XGetWMSizeHints, XSizeHints - allocate size hints structure and set or
       read a window's WM_NORMAL_HINTS property

SYNTAX
       XSizeHints *XAllocSizeHints(void);

       void XSetWMNormalHints(Display *display, Window w, XSizeHints *hints);

       Status XGetWMNormalHints(Display *display, Window w, XSizeHints
	      *hints_return, long *supplied_return);

       void XSetWMSizeHints(Display *display, Window w, XSizeHints *hints,
	      Atom property);

       Status XGetWMSizeHints(Display *display, Window w, XSizeHints
	      *hints_return, long *supplied_return, Atom property);

ARGUMENTS
       display	 Specifies the connection to the X server.

       hints	 Specifies the size hints for the window in its normal state.

       hints	 Specifies the XSizeHints structure to be used.

       hints_return
		 Returns the size hints for the window in its normal state.

       property	 Specifies the property name.

       supplied_return
		 Returns the hints that were supplied by the user.

       w	 Specifies the window.

DESCRIPTION
       The XAllocSizeHints function allocates and returns a pointer to a
       XSizeHints structure.  Note that all fields in the XSizeHints structure
       are initially set to zero.  If insufficient memory is available, XAl‐
       locSizeHints returns NULL.  To free the memory allocated to this struc‐
       ture, use XFree.

       The XSetWMNormalHints function replaces the size hints for the WM_NOR‐
       MAL_HINTS property on the specified window.  If the property does not
       already exist, XSetWMNormalHints sets the size hints for the WM_NOR‐
       MAL_HINTS property on the specified window.  The property is stored
       with a type of WM_SIZE_HINTS and a format of 32.

       XSetWMNormalHints can generate BadAlloc and BadWindow errors.

       The XGetWMNormalHints function returns the size hints stored in the
       WM_NORMAL_HINTS property on the specified window.  If the property is
       of type WM_SIZE_HINTS, is of format 32, and is long enough to contain
       either an old (pre-ICCCM) or new size hints structure, XGetWMNormal‐
       Hints sets the various fields of the XSizeHints structure, sets the
       supplied_return argument to the list of fields that were supplied by
       the user (whether or not they contained defined values), and returns a
       nonzero status.	Otherwise, it returns a zero status.

       If XGetWMNormalHints returns successfully and a pre-ICCCM size hints
       property is read, the supplied_return argument will contain the follow‐
       ing bits:

       (USPosition|USSize|PPosition|PSize|PMinSize|
	PMaxSize|PResizeInc|PAspect)

       If the property is large enough to contain the base size and window
       gravity fields as well, the supplied_return argument will also contain
       the following bits:

       PBaseSize|PWinGravity

       XGetWMNormalHints can generate a PN BadWindow error.

       The XSetWMSizeHints function replaces the size hints for the specified
       property on the named window.  If the specified property does not
       already exist, XSetWMSizeHints sets the size hints for the specified
       property on the named window.  The property is stored with a type of
       WM_SIZE_HINTS and a format of 32.  To set a window's normal size hints,
       you can use the XSetWMNormalHints function.

       XSetWMSizeHints can generate BadAlloc, BadAtom, and BadWindow errors.

       The XGetWMSizeHints function returns the size hints stored in the spec‐
       ified property on the named window.  If the property is of type
       WM_SIZE_HINTS, is of format 32, and is long enough to contain either an
       old (pre-ICCCM) or new size hints structure, XGetWMSizeHints sets the
       various fields of the XSizeHints structure, sets the supplied_return
       argument to the list of fields that were supplied by the user (whether
       or not they contained defined values), and returns a nonzero status.
       Otherwise, it returns a zero status.  To get a window's normal size
       hints, you can use the XGetWMNormalHints function.

       If XGetWMSizeHints returns successfully and a pre-ICCCM size hints
       property is read, the supplied_return argument will contain the follow‐
       ing bits:

       (USPosition|USSize|PPosition|PSize|PMinSize|
	PMaxSize|PResizeInc|PAspect)

       If the property is large enough to contain the base size and window
       gravity fields as well, the supplied_return argument will also contain
       the following bits:

       PBaseSize|PWinGravity

       XGetWMSizeHints can generate BadAtom and BadWindow errors.

PROPERTIES
       WM_NORMAL_HINTS
		 Size hints for a window in its normal state.  The C type of
		 this property is XSizeHints.

STRUCTURES
       The XSizeHints structure contains:

       /* Size hints mask bits */

       #define	 USPosition    (1L << 0)	  /* user specified x, y */
       #define	 USSize	       (1L << 1)	  /* user specified width, height
						  */
       #define	 PPosition     (1L << 2)	  /* program specified position
						  */
       #define	 PSize	       (1L << 3)	  /* program specified size */
       #define	 PMinSize      (1L << 4)	  /* program specified minimum
						  size */

       #define	 PMaxSize      (1L << 5)	  /* program specified maximum
						  size */
       #define	 PResizeInc    (1L << 6)	  /* program specified resize
						  increments */
       #define	 PAspect       (1L << 7)	  /* program specified min and
						  max aspect ratios */
       #define	 PBaseSize     (1L << 8)
       #define	 PWinGravity   (1L << 9)
       #define	 PAllHints     (PPosi‐
			       tion|PSize|
			       PMinSize|PMax‐
			       Size|
			       PRe‐
			       sizeInc|PAspect)
       /* Values */

       typedef struct {
	       long flags;     /* marks which fields in this structure are defined */
	       int x, y;       /* Obsolete */
	       int width, height;      /* Obsolete */
	       int min_width, min_height;
	       int max_width, max_height;
	       int width_inc, height_inc;
	       struct {
		      int x;   /* numerator */
		      int y;   /* denominator */
	       } min_aspect, max_aspect;
	       int base_width, base_height;
	       int win_gravity;
	       /* this structure may be extended in the future */
       } XSizeHints;

       The x, y, width, and height members are now obsolete and are left
       solely for compatibility reasons.  The min_width and min_height members
       specify the minimum window size that still allows the application to be
       useful.	The max_width and max_height members specify the maximum win‐
       dow size.  The width_inc and height_inc members define an arithmetic
       progression of sizes (minimum to maximum) into which the window prefers
       to be resized.  The min_aspect and max_aspect members are expressed as
       ratios of x and y, and they allow an application to specify the range
       of aspect ratios it prefers.  The base_width and base_height members
       define the desired size of the window.  The window manager will inter‐
       pret the position of the window and its border width to position the
       point of the outer rectangle of the overall window specified by the
       win_gravity member.  The outer rectangle of the window includes any
       borders or decorations supplied by the window manager.  In other words,
       if the window manager decides to place the window where the client
       asked, the position on the parent window's border named by the
       win_gravity will be placed where the client window would have been
       placed in the absence of a window manager.

       Note that use of the PAllHints macro is highly discouraged.

DIAGNOSTICS
       BadAlloc	 The server failed to allocate the requested resource or
		 server memory.

       BadAtom	 A value for an Atom argument does not name a defined Atom.

       BadWindow A value for a Window argument does not name a defined Window.

SEE ALSO
       XAllocClassHint(3), XAllocIconSize(3), XAllocWMHints(3), XFree(3),
       XSetCommand(3), XSetTransientForHint(3), XSetTextProperty(3), XSetWM‐
       ClientMachine(3), XSetWMColormapWindows(3), XSetWMIconName(3), XSetWM‐
       Name(3), XSetWMProperties(3), XSetWMProtocols(3), XStringListTo‐
       TextProperty(3)
       Xlib - C Language X Interface, O'Reilly and Associates,

X Version 11			 libX11 1.6.2		    XAllocSizeHints(3)
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