| Title: | DECWINDOWS 26-JAN-89 to 29-NOV-90 |
| Notice: | See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit |
| Moderator: | STAR::VATNE |
| Created: | Mon Oct 30 1989 |
| Last Modified: | Mon Dec 31 1990 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3726 |
| Total number of notes: | 19516 |
Hello,
Under VMS V5.3 DECW V2.0 we are trying to grant access to a display
from within a client application. The method we have chosen to use
is calling XAddHost. For some reason we just cannot get this to work.
The XAddHost call needs the parameters display and XHostAddress. The
latter structure is built like so:
typedef struct {
int family; /* Decnet */
int length; /* sizeof(address)*/
char *address; /* pointer to wher to find the address*/
} XHostAddress;
1) Does anybody know how to specify the address from a DECnet address.
2) If so, do you have an example in VMS showing how to add a display
access for a client using XAddHost.
3) Is this possible from a client applicaton in VMS.
I've seen Xhost from MIT but there are too many calls I cant find in
VMS.
Thank You,
CER
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 2647.1 | Some hints | STAR::VATNE | Peter Vatne, VMS Development | Tue Apr 24 1990 17:14 | 6 |
I've never tried this myself, but from reading the code, I believe the length of a DECnet address is 2, and the DECnet address is the 2-byte Phase IV DECnet address. I suggest you post an excerpt from your program so we can see if there is some obvious error in your calling sequence. | |||||
| 2647.2 | This seems to work sometimes | TOWNS::RUFFIEUX | Thu Apr 26 1990 16:30 | 28 | |
re .1
Here is what I came up with. It only works some of the time for some
reason.
#include <decw$include:xlib.h>
#include stdio
main()
{
XHostAddress *list;
XHostAddress ha;
int num_hosts;
Bool enabled = False;
Display *dpy;
short nodeAdd = 37019; /* DECnet node address .*/
dpy = XOpenDisplay(NULL);
XListHosts(dpy,&num_hosts,&enabled);
printf("Number of hosts before addhost is %d\n",num_hosts);
ha.family = FamilyDECnet;
ha.length = sizeof(nodeAdd);
ha.address = (char *)&nodeAdd;
XAddHost(dpy,&ha);
XListHosts(dpy,&num_hosts,&enabled);
printf("Number of hosts after addhost is %d\n",num_hosts);
}
| |||||
| 2647.3 | KONING::KONING | NI1D @FN42eq | Tue May 01 1990 19:51 | 5 | |
Does it really use the address and not the name? This sounds strange, since it's so much easier for applications to get the name rather than the address. paul | |||||