rarob at comcast.net, le Fri 14 Mar 2008 12:38:16 +0000, a écrit : > I've got a question regarding how the Window X11 datatype works on 32 and 64 > bit systems. The upper 3 bits of a Window ID (which is 32 bits) are always 0. So a Window ID can always fit in a 32bit integer, even if it is signed, and even shifted left 2 bits. Samuel