tHandle errors in wm_reg_event() - libwm - X windows manipulation library
  HTML git clone git://z3bra.org/libwm
   DIR Log
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       ---
   DIR commit 65e44403ff65e1c15b76b7be8c20021475d07c1c
   DIR parent 246faeb2f14e0be097f3d7629830b469bd6bb7b8
  HTML Author: Willy Goiffon <dev@z3bra.org>
       Date:   Tue, 22 Oct 2019 19:48:27 +0200
       
       Handle errors in wm_reg_event()
       
       Diffstat:
         M libwm.c                             |      12 ++++++++++--
       
       1 file changed, 10 insertions(+), 2 deletions(-)
       ---
   DIR diff --git a/libwm.c b/libwm.c
       t@@ -400,7 +400,15 @@ int
        wm_reg_event(xcb_window_t wid, uint32_t mask)
        {
                uint32_t val[] = { mask };
       +        xcb_void_cookie_t c;
       +        xcb_generic_error_t *e;
        
       -        xcb_change_window_attributes(conn, wid, XCB_CW_EVENT_MASK, val);
       -        return 0;
       +        c = xcb_change_window_attributes_checked(conn, wid, XCB_CW_EVENT_MASK, val);
       +        e = xcb_request_check(conn, c);
       +        if (!e)
       +                return 0;
       +
       +        free(e);
       +
       +        return 1;
        }