I'm still getting these compiler warnings from compiling xcb-demo/tests/main.c: main.c: In function `main': main.c:120: warning: passing arg 8 of `XCBChangeProperty' from incompatible pointer type main.c:207: warning: implicit declaration of function `XCBListIsEmpty' Anyone have any insight? The first looks kind of like a bug in main.c, the second like a missing decl in XCB. Bart