| diff -up dx-4.4.4/src/exec/libdx/xwindow.c.null dx-4.4.4/src/exec/libdx/xwindow.c |
| --- dx-4.4.4/src/exec/libdx/xwindow.c.null 2000-06-12 07:45:40.000000000 +0200 |
| +++ dx-4.4.4/src/exec/libdx/xwindow.c 2009-11-08 15:10:13.000000000 +0100 |
| @@ -29,7 +29,9 @@ Error |
| DXRegisterWindowHandlerWithCheckProc(Error (*proc) (int, Pointer), |
| int (*check)(int, Pointer), Display *d, Pointer arg) |
| { |
| - int fd = ConnectionNumber(d); |
| + int fd; |
| + if (d) fd = ConnectionNumber(d); |
| + else return ERROR; |
| |
| if (! DXRegisterInputHandlerWithCheckProc(proc, check, fd, arg)) |
| return ERROR; |
