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       XAllocIconSize, XSetIconSizes, XGetIconSizes, XIconSize - allocate icon size structure and
       set or read a window's WM_ICON_SIZES property


       XIconSize *XAllocIconSize(void);

       int XSetIconSizes(Display *display, Window w, XIconSize *size_list, int count);

       Status  XGetIconSizes(Display  *display,  Window  w,  XIconSize  **size_list_return,   int


       display   Specifies the connection to the X server.

       count     Specifies the number of items in the size list.

                 Returns the number of items in the size list.

       size_list Specifies the size list.

                 Returns the size list.

       w         Specifies the window.


       The  XAllocIconSize  function  allocates  and  returns a pointer to a XIconSize structure.
       Note that  all  fields  in  the  XIconSize  structure  are  initially  set  to  zero.   If
       insufficient  memory  is  available,  XAllocIconSize  returns  NULL.   To  free the memory
       allocated to this structure, use XFree.

       The XSetIconSizes function is used only by window  managers  to  set  the  supported  icon

       XSetIconSizes can generate BadAlloc and BadWindow errors.

       The  XGetIconSizes  function  returns  zero  if  a  window manager has not set icon sizes;
       otherwise, it return nonzero.  XGetIconSizes should be called by an application that wants
       to  find  out  what icon sizes would be most appreciated by the window manager under which
       the application is running.  The application should then use  XSetWMHints  to  supply  the
       window  manager  with an icon pixmap or window in one of the supported sizes.  To free the
       data allocated in size_list_return, use XFree.

       XGetIconSizes can generate a BadWindow error.


                 The window manager may set this property on the root window to specify the  icon
                 sizes it supports.  The C type of this property is XIconSize.


       The XIconSize structure contains:

       typedef struct {
               int min_width, min_height;
               int max_width, max_height;
               int width_inc, height_inc;
       } XIconSize;

       The width_inc and height_inc members define an arithmetic progression of sizes (minimum to
       maximum) that represent the supported icon sizes.


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

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


       XAllocClassHint(3),  XAllocSizeHints(3),   XAllocWMHints(3),   XFree(3),   XSetCommand(3),
       XSetTransientForHint(3),            XSetTextProperty(3),           XSetWMClientMachine(3),
       XSetWMColormapWindows(3),    XSetWMIconName(3),    XSetWMName(3),     XSetWMProperties(3),
       XSetWMProtocols(3), XStringListToTextProperty(3)
       Xlib - C Language X Interface