XAllocIconSize man page on Ubuntu

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XAllocIconSize(3)		XLIB FUNCTIONS		     XAllocIconSize(3)

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

SYNTAX
       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 count_return);

ARGUMENTS
       display	 Specifies the connection to the X server.

       count	 Specifies the number of items in the size list.

       count_return
		 Returns the number of items in the size list.

       size_list Specifies the size list.

       size_list_return
		 Returns the size list.

       w	 Specifies the window.

DESCRIPTION
       The XAllocIconSize function allocates and returns a pointer to a XIcon‐
       Size structure.	Note that all fields in the XIconSize structure are
       initially set to zero.  If insufficient memory is available, XAllocI‐
       conSize 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 sizes.

       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.

PROPERTIES
       WM_ICON_SIZES
		 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.

STRUCTURES
       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.

DIAGNOSTICS
       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.

SEE ALSO
       XAllocClassHint(3), XAllocSizeHints(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

X Version 11			 libX11 1.3.2		     XAllocIconSize(3)
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