title: XCB - How to set WM_SIZE_HINTS?
body: <p>I'm writing a minimalistic library for window creation in xcb.
  I want to be able to create a non-resizeable window. I found out, that it is possible to give hints to the window manager with: </p>
  
  <pre><code>xcb_void_cookie_t xcb_change_property (xcb_connection_t *c,       /* Connection to the X server */
                                         uint8_t          mode,     /* Property mode */
                                         xcb_window_t     window,   /* Window */
                                         xcb_atom_t       property, /* Property to change */
                                         xcb_atom_t       type,     /* Type of the property */
                                         uint8_t          format,   /* Format of the property (8, 16, 32) */
                                         uint32_t         data_len, /* Length of the data parameter */
                                         const void      *data);    /* Data */
  </code></pre>
  
  <p>I tried to change the WM_NORMAL_HINTS and WM_SIZE_HINTS with this function, but how do I know what data I have to put in the *data parameter? Is the type XCB_ATOM_INTEGER or something else? </p>